/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-bad-three-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:58:23,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:58:23,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:58:23,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:58:23,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:58:23,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:58:23,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:58:23,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:58:23,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:58:23,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:58:23,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:58:23,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:58:23,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:58:23,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:58:23,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:58:23,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:58:23,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:58:23,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:58:23,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:58:23,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:58:23,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:58:23,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:58:23,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:58:23,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:58:23,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:58:23,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:58:23,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:58:23,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:58:23,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:58:23,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:58:23,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:58:23,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:58:23,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:58:23,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:58:23,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:58:23,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:58:23,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:58:23,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:58:23,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:58:23,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:58:23,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:58:23,430 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 03:58:23,456 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:58:23,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:58:23,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:58:23,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:58:23,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:58:23,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:58:23,458 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:58:23,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:58:23,458 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:58:23,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:58:23,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:58:23,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:58:23,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:58:23,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:58:23,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:58:23,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:58:23,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:58:23,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:58:23,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:58:23,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:58:23,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:58:23,656 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:58:23,656 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:58:23,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-01-28 03:58:24,769 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:58:24,953 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:58:24,954 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-01-28 03:58:24,959 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d933b24/f1949a73e0a84f64b2770840bea65ee9/FLAGb6a7d861b [2023-01-28 03:58:24,969 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d933b24/f1949a73e0a84f64b2770840bea65ee9 [2023-01-28 03:58:24,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:58:24,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:58:24,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:58:24,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:58:24,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:58:24,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:58:24" (1/1) ... [2023-01-28 03:58:24,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8213ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:24, skipping insertion in model container [2023-01-28 03:58:24,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:58:24" (1/1) ... [2023-01-28 03:58:24,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:58:24,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:58:25,126 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-bad-three-array-sum-alt.wvr.c[2412,2425] [2023-01-28 03:58:25,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:58:25,152 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:58:25,169 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-bad-three-array-sum-alt.wvr.c[2412,2425] [2023-01-28 03:58:25,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:58:25,185 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:58:25,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25 WrapperNode [2023-01-28 03:58:25,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:58:25,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:58:25,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:58:25,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:58:25,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,223 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 275 [2023-01-28 03:58:25,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:58:25,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:58:25,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:58:25,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:58:25,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:58:25,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:58:25,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:58:25,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:58:25,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (1/1) ... [2023-01-28 03:58:25,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:58:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:25,302 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 03:58:25,304 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 03:58:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:58:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:58:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:58:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:58:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:58:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:58:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:58:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 03:58:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:58:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:58:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:58:25,343 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 03:58:25,521 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:58:25,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:58:25,938 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:58:25,949 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:58:25,949 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 03:58:25,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:58:25 BoogieIcfgContainer [2023-01-28 03:58:25,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:58:25,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:58:25,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:58:25,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:58:25,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:58:24" (1/3) ... [2023-01-28 03:58:25,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdfc558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:58:25, skipping insertion in model container [2023-01-28 03:58:25,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:58:25" (2/3) ... [2023-01-28 03:58:25,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdfc558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:58:25, skipping insertion in model container [2023-01-28 03:58:25,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:58:25" (3/3) ... [2023-01-28 03:58:25,958 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2023-01-28 03:58:25,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:58:25,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:58:25,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:58:26,102 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 03:58:26,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 321 transitions, 666 flow [2023-01-28 03:58:26,251 INFO L130 PetriNetUnfolder]: 29/318 cut-off events. [2023-01-28 03:58:26,251 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:58:26,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 29/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 438 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-01-28 03:58:26,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 321 transitions, 666 flow [2023-01-28 03:58:26,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 308 transitions, 634 flow [2023-01-28 03:58:26,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:58:26,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 308 transitions, 634 flow [2023-01-28 03:58:26,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 308 transitions, 634 flow [2023-01-28 03:58:26,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 308 transitions, 634 flow [2023-01-28 03:58:26,327 INFO L130 PetriNetUnfolder]: 29/308 cut-off events. [2023-01-28 03:58:26,327 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:58:26,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 308 events. 29/308 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 431 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2023-01-28 03:58:26,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 12810 [2023-01-28 03:58:34,294 INFO L134 LiptonReduction]: Checked pairs total: 12315 [2023-01-28 03:58:34,294 INFO L136 LiptonReduction]: Total number of compositions: 361 [2023-01-28 03:58:34,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:58:34,319 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;@7f2c50e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:58:34,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 03:58:34,326 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-01-28 03:58:34,326 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:58:34,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:34,327 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 03:58:34,328 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 03:58:34,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1610439478, now seen corresponding path program 1 times [2023-01-28 03:58:34,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832821485] [2023-01-28 03:58:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:35,482 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 03:58:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:35,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832821485] [2023-01-28 03:58:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832821485] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:58:35,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:58:35,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:58:35,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537914579] [2023-01-28 03:58:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:58:35,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:58:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:58:35,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 682 [2023-01-28 03:58:35,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 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 03:58:35,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:35,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 682 [2023-01-28 03:58:35,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:35,726 INFO L130 PetriNetUnfolder]: 445/647 cut-off events. [2023-01-28 03:58:35,726 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-01-28 03:58:35,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 647 events. 445/647 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2249 event pairs, 76 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 803. Up to 465 conditions per place. [2023-01-28 03:58:35,734 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 50 selfloop transitions, 12 changer transitions 2/67 dead transitions. [2023-01-28 03:58:35,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 67 transitions, 313 flow [2023-01-28 03:58:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:58:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:58:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1010 transitions. [2023-01-28 03:58:35,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37023460410557185 [2023-01-28 03:58:35,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1010 transitions. [2023-01-28 03:58:35,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1010 transitions. [2023-01-28 03:58:35,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:35,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1010 transitions. [2023-01-28 03:58:35,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 0 states have call successors, (0), 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 03:58:35,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 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 03:58:35,780 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 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 03:58:35,782 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 4 states and 1010 transitions. [2023-01-28 03:58:35,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 67 transitions, 313 flow [2023-01-28 03:58:35,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 67 transitions, 279 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 03:58:35,787 INFO L231 Difference]: Finished difference. Result has 31 places, 39 transitions, 145 flow [2023-01-28 03:58:35,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=31, PETRI_TRANSITIONS=39} [2023-01-28 03:58:35,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-01-28 03:58:35,792 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 39 transitions, 145 flow [2023-01-28 03:58:35,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 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 03:58:35,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:35,793 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 03:58:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:58:35,793 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 03:58:35,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -713284412, now seen corresponding path program 1 times [2023-01-28 03:58:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358880152] [2023-01-28 03:58:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:58:35,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358880152] [2023-01-28 03:58:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358880152] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:58:35,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:58:35,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:58:35,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871994130] [2023-01-28 03:58:35,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:35,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:58:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:58:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:58:35,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 682 [2023-01-28 03:58:35,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 39 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 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 03:58:35,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:35,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 682 [2023-01-28 03:58:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:36,186 INFO L130 PetriNetUnfolder]: 719/1094 cut-off events. [2023-01-28 03:58:36,186 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2023-01-28 03:58:36,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 1094 events. 719/1094 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4526 event pairs, 299 based on Foata normal form. 48/1130 useless extension candidates. Maximal degree in co-relation 1204. Up to 480 conditions per place. [2023-01-28 03:58:36,193 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 67 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-01-28 03:58:36,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 79 transitions, 432 flow [2023-01-28 03:58:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:58:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:58:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1279 transitions. [2023-01-28 03:58:36,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3750733137829912 [2023-01-28 03:58:36,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1279 transitions. [2023-01-28 03:58:36,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1279 transitions. [2023-01-28 03:58:36,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:36,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1279 transitions. [2023-01-28 03:58:36,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 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 03:58:36,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:36,207 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:36,207 INFO L175 Difference]: Start difference. First operand has 31 places, 39 transitions, 145 flow. Second operand 5 states and 1279 transitions. [2023-01-28 03:58:36,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 79 transitions, 432 flow [2023-01-28 03:58:36,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 79 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 03:58:36,211 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 222 flow [2023-01-28 03:58:36,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2023-01-28 03:58:36,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-01-28 03:58:36,212 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 222 flow [2023-01-28 03:58:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 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 03:58:36,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:36,213 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 03:58:36,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:58:36,213 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 03:58:36,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:36,215 INFO L85 PathProgramCache]: Analyzing trace with hash -774282216, now seen corresponding path program 1 times [2023-01-28 03:58:36,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:36,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10702494] [2023-01-28 03:58:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:58:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10702494] [2023-01-28 03:58:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10702494] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:58:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:58:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:58:36,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639887333] [2023-01-28 03:58:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:36,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:58:36,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:58:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:58:36,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 682 [2023-01-28 03:58:36,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 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 03:58:36,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:36,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 682 [2023-01-28 03:58:36,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:36,552 INFO L130 PetriNetUnfolder]: 569/906 cut-off events. [2023-01-28 03:58:36,553 INFO L131 PetriNetUnfolder]: For 354/384 co-relation queries the response was YES. [2023-01-28 03:58:36,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 906 events. 569/906 cut-off events. For 354/384 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3922 event pairs, 244 based on Foata normal form. 74/970 useless extension candidates. Maximal degree in co-relation 1290. Up to 490 conditions per place. [2023-01-28 03:58:36,558 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 61 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2023-01-28 03:58:36,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 74 transitions, 452 flow [2023-01-28 03:58:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:58:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:58:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1277 transitions. [2023-01-28 03:58:36,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3744868035190616 [2023-01-28 03:58:36,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1277 transitions. [2023-01-28 03:58:36,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1277 transitions. [2023-01-28 03:58:36,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:36,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1277 transitions. [2023-01-28 03:58:36,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 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 03:58:36,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:36,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:36,573 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 222 flow. Second operand 5 states and 1277 transitions. [2023-01-28 03:58:36,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 74 transitions, 452 flow [2023-01-28 03:58:36,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 448 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 03:58:36,580 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 246 flow [2023-01-28 03:58:36,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-28 03:58:36,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-01-28 03:58:36,583 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 246 flow [2023-01-28 03:58:36,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 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 03:58:36,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:36,584 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 03:58:36,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:58:36,584 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 03:58:36,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1829236200, now seen corresponding path program 1 times [2023-01-28 03:58:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:36,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636203494] [2023-01-28 03:58:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:58:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:36,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636203494] [2023-01-28 03:58:36,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636203494] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:58:36,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:58:36,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:58:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604743745] [2023-01-28 03:58:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:36,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:58:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:36,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:58:36,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:58:36,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 682 [2023-01-28 03:58:36,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 244.2) internal successors, (1221), 5 states have internal predecessors, (1221), 0 states have call successors, (0), 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 03:58:36,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:36,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 682 [2023-01-28 03:58:36,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:36,900 INFO L130 PetriNetUnfolder]: 481/766 cut-off events. [2023-01-28 03:58:36,900 INFO L131 PetriNetUnfolder]: For 435/471 co-relation queries the response was YES. [2023-01-28 03:58:36,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 766 events. 481/766 cut-off events. For 435/471 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3254 event pairs, 218 based on Foata normal form. 64/828 useless extension candidates. Maximal degree in co-relation 1427. Up to 518 conditions per place. [2023-01-28 03:58:36,904 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 26 selfloop transitions, 6 changer transitions 34/68 dead transitions. [2023-01-28 03:58:36,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 433 flow [2023-01-28 03:58:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:58:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:58:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1259 transitions. [2023-01-28 03:58:36,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369208211143695 [2023-01-28 03:58:36,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1259 transitions. [2023-01-28 03:58:36,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1259 transitions. [2023-01-28 03:58:36,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:36,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1259 transitions. [2023-01-28 03:58:36,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 251.8) internal successors, (1259), 5 states have internal predecessors, (1259), 0 states have call successors, (0), 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 03:58:36,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:36,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:36,921 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 246 flow. Second operand 5 states and 1259 transitions. [2023-01-28 03:58:36,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 433 flow [2023-01-28 03:58:36,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 414 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 03:58:36,925 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 172 flow [2023-01-28 03:58:36,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-01-28 03:58:36,926 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-01-28 03:58:36,926 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 172 flow [2023-01-28 03:58:36,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 244.2) internal successors, (1221), 5 states have internal predecessors, (1221), 0 states have call successors, (0), 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 03:58:36,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:36,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:36,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:58:36,928 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 03:58:36,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1395831978, now seen corresponding path program 1 times [2023-01-28 03:58:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072014950] [2023-01-28 03:58:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:37,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:37,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072014950] [2023-01-28 03:58:37,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072014950] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:37,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934180576] [2023-01-28 03:58:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:37,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:37,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:37,058 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 03:58:37,062 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 03:58:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:37,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:58:37,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:37,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934180576] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:58:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 03:58:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984203890] [2023-01-28 03:58:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:37,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:58:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:58:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 03:58:37,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 682 [2023-01-28 03:58:37,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 247.8) internal successors, (1239), 5 states have internal predecessors, (1239), 0 states have call successors, (0), 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 03:58:37,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:37,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 682 [2023-01-28 03:58:37,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:37,438 INFO L130 PetriNetUnfolder]: 378/548 cut-off events. [2023-01-28 03:58:37,438 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2023-01-28 03:58:37,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 548 events. 378/548 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1841 event pairs, 96 based on Foata normal form. 42/576 useless extension candidates. Maximal degree in co-relation 1436. Up to 393 conditions per place. [2023-01-28 03:58:37,442 INFO L137 encePairwiseOnDemand]: 677/682 looper letters, 39 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-01-28 03:58:37,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 302 flow [2023-01-28 03:58:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:58:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:58:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1253 transitions. [2023-01-28 03:58:37,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36744868035190614 [2023-01-28 03:58:37,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1253 transitions. [2023-01-28 03:58:37,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1253 transitions. [2023-01-28 03:58:37,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:37,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1253 transitions. [2023-01-28 03:58:37,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.6) internal successors, (1253), 5 states have internal predecessors, (1253), 0 states have call successors, (0), 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 03:58:37,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:37,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:37,454 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 172 flow. Second operand 5 states and 1253 transitions. [2023-01-28 03:58:37,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 302 flow [2023-01-28 03:58:37,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 242 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-01-28 03:58:37,456 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 139 flow [2023-01-28 03:58:37,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-01-28 03:58:37,457 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-01-28 03:58:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 139 flow [2023-01-28 03:58:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.8) internal successors, (1239), 5 states have internal predecessors, (1239), 0 states have call successors, (0), 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 03:58:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:37,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:37,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:58:37,664 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 03:58:37,665 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 03:58:37,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2005609756, now seen corresponding path program 1 times [2023-01-28 03:58:37,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139413211] [2023-01-28 03:58:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:37,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:37,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:37,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139413211] [2023-01-28 03:58:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139413211] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:37,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654436847] [2023-01-28 03:58:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:37,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:37,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:37,845 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 03:58:37,847 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 03:58:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:37,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:58:37,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:38,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654436847] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:38,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:58:38,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 03:58:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152396763] [2023-01-28 03:58:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:58:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:58:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:58:38,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 682 [2023-01-28 03:58:38,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 247.8) internal successors, (1239), 5 states have internal predecessors, (1239), 0 states have call successors, (0), 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 03:58:38,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:38,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 682 [2023-01-28 03:58:38,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:38,162 INFO L130 PetriNetUnfolder]: 297/441 cut-off events. [2023-01-28 03:58:38,162 INFO L131 PetriNetUnfolder]: For 322/384 co-relation queries the response was YES. [2023-01-28 03:58:38,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 441 events. 297/441 cut-off events. For 322/384 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1418 event pairs, 107 based on Foata normal form. 90/512 useless extension candidates. Maximal degree in co-relation 1212. Up to 337 conditions per place. [2023-01-28 03:58:38,165 INFO L137 encePairwiseOnDemand]: 677/682 looper letters, 41 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-01-28 03:58:38,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 281 flow [2023-01-28 03:58:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:58:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:58:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1253 transitions. [2023-01-28 03:58:38,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36744868035190614 [2023-01-28 03:58:38,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1253 transitions. [2023-01-28 03:58:38,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1253 transitions. [2023-01-28 03:58:38,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:38,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1253 transitions. [2023-01-28 03:58:38,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.6) internal successors, (1253), 5 states have internal predecessors, (1253), 0 states have call successors, (0), 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 03:58:38,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:38,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:38,212 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 139 flow. Second operand 5 states and 1253 transitions. [2023-01-28 03:58:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 281 flow [2023-01-28 03:58:38,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 264 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 03:58:38,213 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 149 flow [2023-01-28 03:58:38,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-01-28 03:58:38,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-01-28 03:58:38,214 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 149 flow [2023-01-28 03:58:38,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.8) internal successors, (1239), 5 states have internal predecessors, (1239), 0 states have call successors, (0), 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 03:58:38,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:38,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:38,223 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 03:58:38,416 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 03:58:38,416 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 03:58:38,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1026556102, now seen corresponding path program 1 times [2023-01-28 03:58:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830730732] [2023-01-28 03:58:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:38,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:38,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830730732] [2023-01-28 03:58:38,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830730732] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:38,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918345927] [2023-01-28 03:58:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:38,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:38,574 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 03:58:38,576 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 03:58:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:58:38,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:38,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:38,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918345927] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:38,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:58:38,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 03:58:38,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274593430] [2023-01-28 03:58:38,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:58:38,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:58:38,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:38,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:58:38,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:58:38,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 682 [2023-01-28 03:58:38,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 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 03:58:38,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:38,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 682 [2023-01-28 03:58:38,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:38,914 INFO L130 PetriNetUnfolder]: 282/422 cut-off events. [2023-01-28 03:58:38,914 INFO L131 PetriNetUnfolder]: For 431/551 co-relation queries the response was YES. [2023-01-28 03:58:38,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 422 events. 282/422 cut-off events. For 431/551 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1260 event pairs, 114 based on Foata normal form. 146/567 useless extension candidates. Maximal degree in co-relation 1236. Up to 333 conditions per place. [2023-01-28 03:58:38,917 INFO L137 encePairwiseOnDemand]: 677/682 looper letters, 43 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-01-28 03:58:38,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 303 flow [2023-01-28 03:58:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:58:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:58:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1238 transitions. [2023-01-28 03:58:38,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.363049853372434 [2023-01-28 03:58:38,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1238 transitions. [2023-01-28 03:58:38,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1238 transitions. [2023-01-28 03:58:38,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:38,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1238 transitions. [2023-01-28 03:58:38,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.6) internal successors, (1238), 5 states have internal predecessors, (1238), 0 states have call successors, (0), 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 03:58:38,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:38,929 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 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 03:58:38,929 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 149 flow. Second operand 5 states and 1238 transitions. [2023-01-28 03:58:38,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 303 flow [2023-01-28 03:58:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 286 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 03:58:38,932 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 159 flow [2023-01-28 03:58:38,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-01-28 03:58:38,932 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-01-28 03:58:38,932 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 159 flow [2023-01-28 03:58:38,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 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 03:58:38,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:38,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:38,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:58:39,139 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 03:58:39,140 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 03:58:39,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash 334891270, now seen corresponding path program 1 times [2023-01-28 03:58:39,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:39,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996932588] [2023-01-28 03:58:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:40,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:40,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996932588] [2023-01-28 03:58:40,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996932588] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988805110] [2023-01-28 03:58:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:40,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:40,566 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 03:58:40,590 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 03:58:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:40,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 87 conjunts are in the unsatisfiable core [2023-01-28 03:58:40,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:40,748 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 34 treesize of output 32 [2023-01-28 03:58:41,081 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 14 treesize of output 16 [2023-01-28 03:58:41,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:58:41,258 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 03:58:41,258 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 21 treesize of output 26 [2023-01-28 03:58:41,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:41,378 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 28 treesize of output 20 [2023-01-28 03:58:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:41,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:41,539 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_347 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_347 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2023-01-28 03:58:41,568 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~asum~0 c_~bsum~0 (select (select |c_#memory_int| c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))))) (and (forall ((v_ArrVal_347 (Array Int Int))) (<= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset))) .cse1)) (forall ((v_ArrVal_347 (Array Int Int))) (<= .cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))))))) is different from false [2023-01-28 03:58:41,581 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0 (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset)))) (and (forall ((v_ArrVal_347 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_347 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2023-01-28 03:58:41,603 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_347 (Array Int Int)) (v_ArrVal_346 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_346))) (<= (+ c_~asum~0 c_~bsum~0 (select (select .cse0 c_~B~0.base) c_~B~0.offset)) (let ((.cse1 (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)))))) (forall ((v_ArrVal_347 (Array Int Int)) (v_ArrVal_346 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_346))) (<= (let ((.cse2 (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_347))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) (+ c_~asum~0 c_~bsum~0 (select (select .cse3 c_~B~0.base) c_~B~0.offset)))))) is different from false [2023-01-28 03:58:41,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:41,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2166 treesize of output 1496 [2023-01-28 03:58:41,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:41,713 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 342 treesize of output 318 [2023-01-28 03:58:41,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:41,734 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 310 treesize of output 302 [2023-01-28 03:58:42,272 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:58:42,273 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:58:42,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:58:42,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 68 treesize of output 60 [2023-01-28 03:58:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-01-28 03:58:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988805110] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:58:42,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:58:42,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-01-28 03:58:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534396562] [2023-01-28 03:58:42,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:58:42,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 03:58:42,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 03:58:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=609, Unknown=4, NotChecked=212, Total=930 [2023-01-28 03:58:42,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 682 [2023-01-28 03:58:42,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 159 flow. Second operand has 31 states, 31 states have (on average 225.19354838709677) internal successors, (6981), 31 states have internal predecessors, (6981), 0 states have call successors, (0), 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 03:58:42,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:42,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 682 [2023-01-28 03:58:42,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:50,223 INFO L130 PetriNetUnfolder]: 824/1201 cut-off events. [2023-01-28 03:58:50,223 INFO L131 PetriNetUnfolder]: For 1036/1036 co-relation queries the response was YES. [2023-01-28 03:58:50,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3837 conditions, 1201 events. 824/1201 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4330 event pairs, 31 based on Foata normal form. 1/1202 useless extension candidates. Maximal degree in co-relation 3793. Up to 783 conditions per place. [2023-01-28 03:58:50,232 INFO L137 encePairwiseOnDemand]: 665/682 looper letters, 86 selfloop transitions, 46 changer transitions 1/133 dead transitions. [2023-01-28 03:58:50,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 133 transitions, 782 flow [2023-01-28 03:58:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:58:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:58:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3027 transitions. [2023-01-28 03:58:50,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34141664786826076 [2023-01-28 03:58:50,241 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3027 transitions. [2023-01-28 03:58:50,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3027 transitions. [2023-01-28 03:58:50,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:50,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3027 transitions. [2023-01-28 03:58:50,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.84615384615384) internal successors, (3027), 13 states have internal predecessors, (3027), 0 states have call successors, (0), 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 03:58:50,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 03:58:50,273 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 03:58:50,273 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 159 flow. Second operand 13 states and 3027 transitions. [2023-01-28 03:58:50,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 133 transitions, 782 flow [2023-01-28 03:58:50,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 133 transitions, 743 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 03:58:50,279 INFO L231 Difference]: Finished difference. Result has 56 places, 77 transitions, 501 flow [2023-01-28 03:58:50,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=501, PETRI_PLACES=56, PETRI_TRANSITIONS=77} [2023-01-28 03:58:50,282 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2023-01-28 03:58:50,282 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 77 transitions, 501 flow [2023-01-28 03:58:50,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 225.19354838709677) internal successors, (6981), 31 states have internal predecessors, (6981), 0 states have call successors, (0), 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 03:58:50,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:50,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:50,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:58:50,490 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 03:58:50,490 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 03:58:50,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1866592914, now seen corresponding path program 2 times [2023-01-28 03:58:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122193152] [2023-01-28 03:58:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:51,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122193152] [2023-01-28 03:58:51,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122193152] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792030518] [2023-01-28 03:58:51,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:58:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:51,617 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 03:58:51,642 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 03:58:51,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:58:51,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:58:51,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:58:51,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:52,097 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:52,098 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 35 treesize of output 23 [2023-01-28 03:58:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:52,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:52,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:52,271 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 42 treesize of output 95 [2023-01-28 03:58:52,563 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 03:58:52,563 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 42 treesize of output 38 [2023-01-28 03:58:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792030518] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:58:52,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:58:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2023-01-28 03:58:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680533611] [2023-01-28 03:58:52,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:58:52,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:58:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:58:52,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:58:52,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 03:58:52,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 77 transitions, 501 flow. Second operand has 16 states, 16 states have (on average 238.1875) internal successors, (3811), 16 states have internal predecessors, (3811), 0 states have call successors, (0), 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 03:58:52,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:52,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 03:58:52,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:53,325 INFO L130 PetriNetUnfolder]: 943/1375 cut-off events. [2023-01-28 03:58:53,325 INFO L131 PetriNetUnfolder]: For 2919/2919 co-relation queries the response was YES. [2023-01-28 03:58:53,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 1375 events. 943/1375 cut-off events. For 2919/2919 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5003 event pairs, 183 based on Foata normal form. 1/1376 useless extension candidates. Maximal degree in co-relation 6014. Up to 1203 conditions per place. [2023-01-28 03:58:53,337 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 102 selfloop transitions, 29 changer transitions 1/132 dead transitions. [2023-01-28 03:58:53,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 132 transitions, 1105 flow [2023-01-28 03:58:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:58:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:58:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2200 transitions. [2023-01-28 03:58:53,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2023-01-28 03:58:53,344 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2200 transitions. [2023-01-28 03:58:53,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2200 transitions. [2023-01-28 03:58:53,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:53,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2200 transitions. [2023-01-28 03:58:53,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.44444444444446) internal successors, (2200), 9 states have internal predecessors, (2200), 0 states have call successors, (0), 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 03:58:53,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:58:53,356 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:58:53,356 INFO L175 Difference]: Start difference. First operand has 56 places, 77 transitions, 501 flow. Second operand 9 states and 2200 transitions. [2023-01-28 03:58:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 132 transitions, 1105 flow [2023-01-28 03:58:53,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 132 transitions, 1043 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-01-28 03:58:53,366 INFO L231 Difference]: Finished difference. Result has 68 places, 100 transitions, 714 flow [2023-01-28 03:58:53,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=714, PETRI_PLACES=68, PETRI_TRANSITIONS=100} [2023-01-28 03:58:53,367 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-01-28 03:58:53,367 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 100 transitions, 714 flow [2023-01-28 03:58:53,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 238.1875) internal successors, (3811), 16 states have internal predecessors, (3811), 0 states have call successors, (0), 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 03:58:53,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:53,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:53,376 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 03:58:53,574 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 03:58:53,574 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 03:58:53,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1986908042, now seen corresponding path program 3 times [2023-01-28 03:58:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:53,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504541848] [2023-01-28 03:58:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:54,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504541848] [2023-01-28 03:58:54,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504541848] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547392939] [2023-01-28 03:58:54,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:58:54,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:54,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:54,471 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 03:58:54,473 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 03:58:54,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:58:54,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:58:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:58:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:54,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:54,919 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 35 treesize of output 23 [2023-01-28 03:58:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:54,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:55,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:55,119 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 38 treesize of output 87 [2023-01-28 03:58:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547392939] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:58:55,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:58:55,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2023-01-28 03:58:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196665900] [2023-01-28 03:58:55,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:58:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:58:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:58:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:58:55,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 03:58:55,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 714 flow. Second operand has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 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 03:58:55,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:55,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 03:58:55,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:56,194 INFO L130 PetriNetUnfolder]: 1110/1617 cut-off events. [2023-01-28 03:58:56,194 INFO L131 PetriNetUnfolder]: For 4405/4405 co-relation queries the response was YES. [2023-01-28 03:58:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 1617 events. 1110/1617 cut-off events. For 4405/4405 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6070 event pairs, 227 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 7367. Up to 1396 conditions per place. [2023-01-28 03:58:56,208 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 126 selfloop transitions, 45 changer transitions 1/172 dead transitions. [2023-01-28 03:58:56,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 172 transitions, 1518 flow [2023-01-28 03:58:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:58:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:58:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2206 transitions. [2023-01-28 03:58:56,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3594004561746497 [2023-01-28 03:58:56,214 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2206 transitions. [2023-01-28 03:58:56,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2206 transitions. [2023-01-28 03:58:56,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:56,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2206 transitions. [2023-01-28 03:58:56,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 245.11111111111111) internal successors, (2206), 9 states have internal predecessors, (2206), 0 states have call successors, (0), 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 03:58:56,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:58:56,227 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:58:56,227 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 714 flow. Second operand 9 states and 2206 transitions. [2023-01-28 03:58:56,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 172 transitions, 1518 flow [2023-01-28 03:58:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 172 transitions, 1484 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-01-28 03:58:56,243 INFO L231 Difference]: Finished difference. Result has 81 places, 126 transitions, 1056 flow [2023-01-28 03:58:56,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=81, PETRI_TRANSITIONS=126} [2023-01-28 03:58:56,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2023-01-28 03:58:56,244 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 126 transitions, 1056 flow [2023-01-28 03:58:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 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 03:58:56,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:56,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:56,254 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 03:58:56,452 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 03:58:56,452 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 03:58:56,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash 291437452, now seen corresponding path program 4 times [2023-01-28 03:58:56,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:56,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478072382] [2023-01-28 03:58:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:57,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:57,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478072382] [2023-01-28 03:58:57,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478072382] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:57,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505980017] [2023-01-28 03:58:57,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:58:57,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:57,319 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 03:58:57,321 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 03:58:57,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:58:57,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:58:57,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:58:57,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:58:57,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:57,699 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 35 treesize of output 23 [2023-01-28 03:58:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:57,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:58:57,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:58:57,892 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 38 treesize of output 87 [2023-01-28 03:58:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:58,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505980017] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:58:58,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:58:58,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2023-01-28 03:58:58,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50821284] [2023-01-28 03:58:58,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:58:58,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:58:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:58:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:58:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:58:58,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 03:58:58,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 126 transitions, 1056 flow. Second operand has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 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 03:58:58,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:58:58,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 03:58:58,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:58:58,759 INFO L130 PetriNetUnfolder]: 1267/1845 cut-off events. [2023-01-28 03:58:58,759 INFO L131 PetriNetUnfolder]: For 6634/6634 co-relation queries the response was YES. [2023-01-28 03:58:58,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9122 conditions, 1845 events. 1267/1845 cut-off events. For 6634/6634 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7079 event pairs, 276 based on Foata normal form. 1/1846 useless extension candidates. Maximal degree in co-relation 9058. Up to 1618 conditions per place. [2023-01-28 03:58:58,776 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 137 selfloop transitions, 54 changer transitions 1/192 dead transitions. [2023-01-28 03:58:58,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 192 transitions, 1907 flow [2023-01-28 03:58:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:58:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:58:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2202 transitions. [2023-01-28 03:58:58,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587487781036168 [2023-01-28 03:58:58,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2202 transitions. [2023-01-28 03:58:58,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2202 transitions. [2023-01-28 03:58:58,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:58:58,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2202 transitions. [2023-01-28 03:58:58,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.66666666666666) internal successors, (2202), 9 states have internal predecessors, (2202), 0 states have call successors, (0), 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 03:58:58,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:58:58,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:58:58,795 INFO L175 Difference]: Start difference. First operand has 81 places, 126 transitions, 1056 flow. Second operand 9 states and 2202 transitions. [2023-01-28 03:58:58,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 192 transitions, 1907 flow [2023-01-28 03:58:58,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 192 transitions, 1812 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-28 03:58:58,834 INFO L231 Difference]: Finished difference. Result has 92 places, 151 transitions, 1411 flow [2023-01-28 03:58:58,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1411, PETRI_PLACES=92, PETRI_TRANSITIONS=151} [2023-01-28 03:58:58,835 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2023-01-28 03:58:58,835 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 151 transitions, 1411 flow [2023-01-28 03:58:58,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 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 03:58:58,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:58:58,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:58:58,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 03:58:59,045 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 03:58:59,045 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 03:58:59,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:58:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2090292154, now seen corresponding path program 5 times [2023-01-28 03:58:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:58:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000873974] [2023-01-28 03:58:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:58:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:58:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:58:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:58:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:58:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000873974] [2023-01-28 03:58:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000873974] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:58:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228592359] [2023-01-28 03:58:59,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:58:59,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:58:59,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:58:59,937 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 03:58:59,940 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 03:59:00,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:59:00,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:00,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:59:00,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:00,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:00,446 INFO L321 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2023-01-28 03:59:00,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 23 [2023-01-28 03:59:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:00,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:00,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:00,663 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 20 treesize of output 17 [2023-01-28 03:59:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:00,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228592359] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:00,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:00,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 17 [2023-01-28 03:59:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379978340] [2023-01-28 03:59:00,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 03:59:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 03:59:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-01-28 03:59:00,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 03:59:00,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 151 transitions, 1411 flow. Second operand has 19 states, 19 states have (on average 237.73684210526315) internal successors, (4517), 19 states have internal predecessors, (4517), 0 states have call successors, (0), 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 03:59:00,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:00,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 03:59:00,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:01,484 INFO L130 PetriNetUnfolder]: 1518/2211 cut-off events. [2023-01-28 03:59:01,484 INFO L131 PetriNetUnfolder]: For 9950/9950 co-relation queries the response was YES. [2023-01-28 03:59:01,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 2211 events. 1518/2211 cut-off events. For 9950/9950 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9006 event pairs, 151 based on Foata normal form. 1/2212 useless extension candidates. Maximal degree in co-relation 11570. Up to 1831 conditions per place. [2023-01-28 03:59:01,505 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 155 selfloop transitions, 83 changer transitions 1/239 dead transitions. [2023-01-28 03:59:01,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 239 transitions, 2522 flow [2023-01-28 03:59:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:59:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:59:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2214 transitions. [2023-01-28 03:59:01,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2023-01-28 03:59:01,510 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2214 transitions. [2023-01-28 03:59:01,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2214 transitions. [2023-01-28 03:59:01,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:01,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2214 transitions. [2023-01-28 03:59:01,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 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 03:59:01,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:59:01,522 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:59:01,522 INFO L175 Difference]: Start difference. First operand has 92 places, 151 transitions, 1411 flow. Second operand 9 states and 2214 transitions. [2023-01-28 03:59:01,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 239 transitions, 2522 flow [2023-01-28 03:59:01,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 239 transitions, 2406 flow, removed 38 selfloop flow, removed 1 redundant places. [2023-01-28 03:59:01,568 INFO L231 Difference]: Finished difference. Result has 104 places, 184 transitions, 1908 flow [2023-01-28 03:59:01,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1908, PETRI_PLACES=104, PETRI_TRANSITIONS=184} [2023-01-28 03:59:01,569 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2023-01-28 03:59:01,569 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 184 transitions, 1908 flow [2023-01-28 03:59:01,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 237.73684210526315) internal successors, (4517), 19 states have internal predecessors, (4517), 0 states have call successors, (0), 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 03:59:01,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:01,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:01,579 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 03:59:01,776 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,SelfDestructingSolverStorable11 [2023-01-28 03:59:01,777 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 03:59:01,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -300642656, now seen corresponding path program 6 times [2023-01-28 03:59:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674863635] [2023-01-28 03:59:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:02,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674863635] [2023-01-28 03:59:02,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674863635] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816221884] [2023-01-28 03:59:02,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:59:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:02,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:02,741 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 03:59:02,743 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 03:59:02,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:59:02,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:02,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:59:02,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:02,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:59:02,975 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:59:02,975 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 11 treesize of output 11 [2023-01-28 03:59:03,284 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 03:59:03,284 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 36 treesize of output 38 [2023-01-28 03:59:03,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:03,462 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 102 treesize of output 106 [2023-01-28 03:59:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:03,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:05,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:05,411 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 52 treesize of output 40 [2023-01-28 03:59:05,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:05,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816221884] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:05,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:05,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2023-01-28 03:59:05,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396022269] [2023-01-28 03:59:05,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:05,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 03:59:05,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:05,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 03:59:05,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-01-28 03:59:05,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 03:59:05,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 184 transitions, 1908 flow. Second operand has 21 states, 21 states have (on average 223.47619047619048) internal successors, (4693), 21 states have internal predecessors, (4693), 0 states have call successors, (0), 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 03:59:05,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:05,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 03:59:05,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:06,710 INFO L130 PetriNetUnfolder]: 1606/2340 cut-off events. [2023-01-28 03:59:06,710 INFO L131 PetriNetUnfolder]: For 13192/13192 co-relation queries the response was YES. [2023-01-28 03:59:06,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13003 conditions, 2340 events. 1606/2340 cut-off events. For 13192/13192 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9646 event pairs, 170 based on Foata normal form. 1/2341 useless extension candidates. Maximal degree in co-relation 12927. Up to 1983 conditions per place. [2023-01-28 03:59:06,728 INFO L137 encePairwiseOnDemand]: 669/682 looper letters, 150 selfloop transitions, 87 changer transitions 1/238 dead transitions. [2023-01-28 03:59:06,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 238 transitions, 2768 flow [2023-01-28 03:59:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:59:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:59:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2530 transitions. [2023-01-28 03:59:06,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2023-01-28 03:59:06,735 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2530 transitions. [2023-01-28 03:59:06,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2530 transitions. [2023-01-28 03:59:06,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:06,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2530 transitions. [2023-01-28 03:59:06,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 230.0) internal successors, (2530), 11 states have internal predecessors, (2530), 0 states have call successors, (0), 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 03:59:06,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 03:59:06,750 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 03:59:06,750 INFO L175 Difference]: Start difference. First operand has 104 places, 184 transitions, 1908 flow. Second operand 11 states and 2530 transitions. [2023-01-28 03:59:06,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 238 transitions, 2768 flow [2023-01-28 03:59:06,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 238 transitions, 2614 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-01-28 03:59:06,801 INFO L231 Difference]: Finished difference. Result has 116 places, 193 transitions, 2137 flow [2023-01-28 03:59:06,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2137, PETRI_PLACES=116, PETRI_TRANSITIONS=193} [2023-01-28 03:59:06,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2023-01-28 03:59:06,802 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 193 transitions, 2137 flow [2023-01-28 03:59:06,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 223.47619047619048) internal successors, (4693), 21 states have internal predecessors, (4693), 0 states have call successors, (0), 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 03:59:06,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:06,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:06,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 03:59:07,009 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,SelfDestructingSolverStorable12 [2023-01-28 03:59:07,009 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 03:59:07,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1927164992, now seen corresponding path program 7 times [2023-01-28 03:59:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:07,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169565828] [2023-01-28 03:59:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:07,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169565828] [2023-01-28 03:59:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169565828] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816816185] [2023-01-28 03:59:07,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:59:07,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:07,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:07,763 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 03:59:07,784 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 03:59:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:07,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:59:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:08,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:08,183 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 35 treesize of output 23 [2023-01-28 03:59:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:08,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:08,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:08,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2023-01-28 03:59:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:08,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816816185] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:08,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2023-01-28 03:59:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135145510] [2023-01-28 03:59:08,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:59:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:59:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:59:08,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 03:59:08,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 193 transitions, 2137 flow. Second operand has 16 states, 16 states have (on average 238.1875) internal successors, (3811), 16 states have internal predecessors, (3811), 0 states have call successors, (0), 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 03:59:08,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:08,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 03:59:08,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:09,139 INFO L130 PetriNetUnfolder]: 1696/2473 cut-off events. [2023-01-28 03:59:09,139 INFO L131 PetriNetUnfolder]: For 14905/14905 co-relation queries the response was YES. [2023-01-28 03:59:09,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14234 conditions, 2473 events. 1696/2473 cut-off events. For 14905/14905 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10389 event pairs, 182 based on Foata normal form. 1/2474 useless extension candidates. Maximal degree in co-relation 14151. Up to 2112 conditions per place. [2023-01-28 03:59:09,156 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 161 selfloop transitions, 84 changer transitions 1/246 dead transitions. [2023-01-28 03:59:09,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 246 transitions, 2982 flow [2023-01-28 03:59:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:59:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:59:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2216 transitions. [2023-01-28 03:59:09,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361029651352232 [2023-01-28 03:59:09,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2216 transitions. [2023-01-28 03:59:09,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2216 transitions. [2023-01-28 03:59:09,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:09,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2216 transitions. [2023-01-28 03:59:09,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.22222222222223) internal successors, (2216), 9 states have internal predecessors, (2216), 0 states have call successors, (0), 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 03:59:09,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:59:09,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:59:09,173 INFO L175 Difference]: Start difference. First operand has 116 places, 193 transitions, 2137 flow. Second operand 9 states and 2216 transitions. [2023-01-28 03:59:09,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 246 transitions, 2982 flow [2023-01-28 03:59:09,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 246 transitions, 2880 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-01-28 03:59:09,244 INFO L231 Difference]: Finished difference. Result has 122 places, 199 transitions, 2316 flow [2023-01-28 03:59:09,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2316, PETRI_PLACES=122, PETRI_TRANSITIONS=199} [2023-01-28 03:59:09,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2023-01-28 03:59:09,245 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 199 transitions, 2316 flow [2023-01-28 03:59:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 238.1875) internal successors, (3811), 16 states have internal predecessors, (3811), 0 states have call successors, (0), 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 03:59:09,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:09,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:09,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 03:59:09,451 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,SelfDestructingSolverStorable13 [2023-01-28 03:59:09,452 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 03:59:09,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash -881735812, now seen corresponding path program 8 times [2023-01-28 03:59:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:09,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737707095] [2023-01-28 03:59:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:59:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737707095] [2023-01-28 03:59:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737707095] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017639887] [2023-01-28 03:59:10,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:59:10,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:10,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:10,665 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 03:59:10,689 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 03:59:10,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:59:10,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:10,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:59:10,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:10,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:59:10,929 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:59:10,930 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 11 treesize of output 11 [2023-01-28 03:59:11,263 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:11,289 INFO L321 Elim1Store]: treesize reduction 67, result has 22.1 percent of original size [2023-01-28 03:59:11,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 41 [2023-01-28 03:59:11,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:11,629 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 114 treesize of output 130 [2023-01-28 03:59:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:11,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:12,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:12,359 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 52 treesize of output 40 [2023-01-28 03:59:12,381 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017639887] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:12,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 27 [2023-01-28 03:59:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822048196] [2023-01-28 03:59:12,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:12,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 03:59:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:12,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 03:59:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-01-28 03:59:12,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 682 [2023-01-28 03:59:12,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 199 transitions, 2316 flow. Second operand has 29 states, 29 states have (on average 203.31034482758622) internal successors, (5896), 29 states have internal predecessors, (5896), 0 states have call successors, (0), 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 03:59:12,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:12,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 682 [2023-01-28 03:59:12,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:13,896 INFO L130 PetriNetUnfolder]: 1840/2682 cut-off events. [2023-01-28 03:59:13,896 INFO L131 PetriNetUnfolder]: For 18700/18700 co-relation queries the response was YES. [2023-01-28 03:59:13,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15835 conditions, 2682 events. 1840/2682 cut-off events. For 18700/18700 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11464 event pairs, 193 based on Foata normal form. 1/2683 useless extension candidates. Maximal degree in co-relation 15752. Up to 2236 conditions per place. [2023-01-28 03:59:13,922 INFO L137 encePairwiseOnDemand]: 666/682 looper letters, 163 selfloop transitions, 94 changer transitions 1/258 dead transitions. [2023-01-28 03:59:13,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 258 transitions, 3269 flow [2023-01-28 03:59:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:59:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:59:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2715 transitions. [2023-01-28 03:59:13,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30622603203248366 [2023-01-28 03:59:13,927 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2715 transitions. [2023-01-28 03:59:13,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2715 transitions. [2023-01-28 03:59:13,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:13,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2715 transitions. [2023-01-28 03:59:13,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 208.84615384615384) internal successors, (2715), 13 states have internal predecessors, (2715), 0 states have call successors, (0), 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 03:59:13,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 03:59:13,938 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 03:59:13,938 INFO L175 Difference]: Start difference. First operand has 122 places, 199 transitions, 2316 flow. Second operand 13 states and 2715 transitions. [2023-01-28 03:59:13,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 258 transitions, 3269 flow [2023-01-28 03:59:14,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 258 transitions, 3049 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-01-28 03:59:14,027 INFO L231 Difference]: Finished difference. Result has 130 places, 209 transitions, 2475 flow [2023-01-28 03:59:14,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2475, PETRI_PLACES=130, PETRI_TRANSITIONS=209} [2023-01-28 03:59:14,028 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2023-01-28 03:59:14,028 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 209 transitions, 2475 flow [2023-01-28 03:59:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 203.31034482758622) internal successors, (5896), 29 states have internal predecessors, (5896), 0 states have call successors, (0), 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 03:59:14,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:14,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:14,035 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 03:59:14,235 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,SelfDestructingSolverStorable14 [2023-01-28 03:59:14,236 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 03:59:14,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1755339952, now seen corresponding path program 9 times [2023-01-28 03:59:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:14,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919236495] [2023-01-28 03:59:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919236495] [2023-01-28 03:59:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919236495] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127919132] [2023-01-28 03:59:15,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:59:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:15,072 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 03:59:15,073 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 03:59:15,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:59:15,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:15,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:59:15,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:15,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:59:15,278 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:59:15,279 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 11 treesize of output 11 [2023-01-28 03:59:15,510 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 03:59:15,510 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 36 treesize of output 38 [2023-01-28 03:59:15,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:15,632 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 102 treesize of output 106 [2023-01-28 03:59:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:15,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:19,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:19,027 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 52 treesize of output 40 [2023-01-28 03:59:19,049 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127919132] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:19,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2023-01-28 03:59:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435344389] [2023-01-28 03:59:19,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:19,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 03:59:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 03:59:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=351, Unknown=2, NotChecked=0, Total=420 [2023-01-28 03:59:19,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 03:59:19,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 209 transitions, 2475 flow. Second operand has 21 states, 21 states have (on average 223.47619047619048) internal successors, (4693), 21 states have internal predecessors, (4693), 0 states have call successors, (0), 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 03:59:19,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:19,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 03:59:19,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:20,076 INFO L130 PetriNetUnfolder]: 1928/2811 cut-off events. [2023-01-28 03:59:20,076 INFO L131 PetriNetUnfolder]: For 20972/20972 co-relation queries the response was YES. [2023-01-28 03:59:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16790 conditions, 2811 events. 1928/2811 cut-off events. For 20972/20972 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12166 event pairs, 234 based on Foata normal form. 1/2812 useless extension candidates. Maximal degree in co-relation 16700. Up to 2449 conditions per place. [2023-01-28 03:59:20,098 INFO L137 encePairwiseOnDemand]: 669/682 looper letters, 177 selfloop transitions, 85 changer transitions 1/263 dead transitions. [2023-01-28 03:59:20,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 263 transitions, 3393 flow [2023-01-28 03:59:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:59:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:59:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2528 transitions. [2023-01-28 03:59:20,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33697680618501735 [2023-01-28 03:59:20,103 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2528 transitions. [2023-01-28 03:59:20,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2528 transitions. [2023-01-28 03:59:20,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:20,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2528 transitions. [2023-01-28 03:59:20,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 229.8181818181818) internal successors, (2528), 11 states have internal predecessors, (2528), 0 states have call successors, (0), 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 03:59:20,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 03:59:20,111 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 03:59:20,111 INFO L175 Difference]: Start difference. First operand has 130 places, 209 transitions, 2475 flow. Second operand 11 states and 2528 transitions. [2023-01-28 03:59:20,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 263 transitions, 3393 flow [2023-01-28 03:59:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 263 transitions, 3102 flow, removed 80 selfloop flow, removed 7 redundant places. [2023-01-28 03:59:20,218 INFO L231 Difference]: Finished difference. Result has 135 places, 215 transitions, 2500 flow [2023-01-28 03:59:20,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2500, PETRI_PLACES=135, PETRI_TRANSITIONS=215} [2023-01-28 03:59:20,219 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2023-01-28 03:59:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 215 transitions, 2500 flow [2023-01-28 03:59:20,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 223.47619047619048) internal successors, (4693), 21 states have internal predecessors, (4693), 0 states have call successors, (0), 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 03:59:20,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:20,220 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, 1, 1, 1, 1] [2023-01-28 03:59:20,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 03:59:20,426 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,SelfDestructingSolverStorable15 [2023-01-28 03:59:20,426 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 03:59:20,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2002673658, now seen corresponding path program 10 times [2023-01-28 03:59:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:20,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184214139] [2023-01-28 03:59:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:20,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:21,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184214139] [2023-01-28 03:59:21,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184214139] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129802103] [2023-01-28 03:59:21,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:59:21,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:21,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:21,251 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 03:59:21,253 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 03:59:21,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:59:21,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:21,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 03:59:21,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:21,588 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 14 treesize of output 16 [2023-01-28 03:59:21,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:21,732 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 28 treesize of output 20 [2023-01-28 03:59:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:21,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:21,971 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_945 (Array Int Int))) (<= .cse0 (+ c_~csum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_945) c_~A~0.base) c_~A~0.offset)))) (forall ((v_ArrVal_945 (Array Int Int))) (<= (+ c_~csum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_945) c_~A~0.base) c_~A~0.offset)) .cse0)))) is different from false [2023-01-28 03:59:21,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:21,983 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 48 treesize of output 36 [2023-01-28 03:59:21,988 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 14 treesize of output 12 [2023-01-28 03:59:21,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 03:59:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129802103] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:22,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:22,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-01-28 03:59:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500304688] [2023-01-28 03:59:22,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 03:59:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 03:59:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=645, Unknown=1, NotChecked=52, Total=812 [2023-01-28 03:59:22,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 682 [2023-01-28 03:59:22,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 215 transitions, 2500 flow. Second operand has 29 states, 29 states have (on average 233.27586206896552) internal successors, (6765), 29 states have internal predecessors, (6765), 0 states have call successors, (0), 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 03:59:22,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:22,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 682 [2023-01-28 03:59:22,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:23,222 INFO L130 PetriNetUnfolder]: 2168/3159 cut-off events. [2023-01-28 03:59:23,223 INFO L131 PetriNetUnfolder]: For 23303/23303 co-relation queries the response was YES. [2023-01-28 03:59:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18884 conditions, 3159 events. 2168/3159 cut-off events. For 23303/23303 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14040 event pairs, 196 based on Foata normal form. 1/3160 useless extension candidates. Maximal degree in co-relation 18799. Up to 2558 conditions per place. [2023-01-28 03:59:23,246 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 186 selfloop transitions, 113 changer transitions 1/300 dead transitions. [2023-01-28 03:59:23,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 300 transitions, 3813 flow [2023-01-28 03:59:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:59:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:59:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2409 transitions. [2023-01-28 03:59:23,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3532258064516129 [2023-01-28 03:59:23,250 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2409 transitions. [2023-01-28 03:59:23,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2409 transitions. [2023-01-28 03:59:23,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:23,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2409 transitions. [2023-01-28 03:59:23,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.9) internal successors, (2409), 10 states have internal predecessors, (2409), 0 states have call successors, (0), 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 03:59:23,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 03:59:23,257 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 03:59:23,257 INFO L175 Difference]: Start difference. First operand has 135 places, 215 transitions, 2500 flow. Second operand 10 states and 2409 transitions. [2023-01-28 03:59:23,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 300 transitions, 3813 flow [2023-01-28 03:59:23,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 300 transitions, 3592 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-01-28 03:59:23,375 INFO L231 Difference]: Finished difference. Result has 141 places, 245 transitions, 3051 flow [2023-01-28 03:59:23,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3051, PETRI_PLACES=141, PETRI_TRANSITIONS=245} [2023-01-28 03:59:23,376 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2023-01-28 03:59:23,376 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 245 transitions, 3051 flow [2023-01-28 03:59:23,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 233.27586206896552) internal successors, (6765), 29 states have internal predecessors, (6765), 0 states have call successors, (0), 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 03:59:23,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:23,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:23,385 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 03:59:23,582 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,SelfDestructingSolverStorable16 [2023-01-28 03:59:23,582 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 03:59:23,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash 714833744, now seen corresponding path program 11 times [2023-01-28 03:59:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:23,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22195286] [2023-01-28 03:59:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:23,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22195286] [2023-01-28 03:59:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22195286] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450315824] [2023-01-28 03:59:24,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:59:24,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:24,560 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 03:59:24,562 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 03:59:24,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:59:24,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:24,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 90 conjunts are in the unsatisfiable core [2023-01-28 03:59:24,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:24,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:59:24,790 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:59:24,791 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 11 treesize of output 11 [2023-01-28 03:59:24,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:24,993 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 14 treesize of output 16 [2023-01-28 03:59:25,155 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:25,180 INFO L321 Elim1Store]: treesize reduction 67, result has 22.1 percent of original size [2023-01-28 03:59:25,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 41 [2023-01-28 03:59:25,529 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:25,529 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 114 treesize of output 130 [2023-01-28 03:59:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:25,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:26,497 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_1013 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1013))) (let ((.cse0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select .cse2 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) c_~B~0.offset)))))) (forall ((~C~0.offset Int) (v_ArrVal_1013 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1013))) (let ((.cse4 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) (.cse5 (select (select .cse3 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse3 c_~C~0.base (store (select .cse3 c_~C~0.base) ~C~0.offset (+ .cse4 .cse5))) c_~B~0.base) c_~B~0.offset)) (+ .cse4 c_~csum~0 .cse5)))))) is different from false [2023-01-28 03:59:26,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:26,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1622 treesize of output 1414 [2023-01-28 03:59:26,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:26,581 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 566 treesize of output 542 [2023-01-28 03:59:29,131 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 14 treesize of output 8 [2023-01-28 03:59:29,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:29,137 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 16 treesize of output 17 [2023-01-28 03:59:29,149 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 36 treesize of output 24 [2023-01-28 03:59:29,168 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 12 treesize of output 6 [2023-01-28 03:59:29,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:29,183 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 57 treesize of output 45 [2023-01-28 03:59:29,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:29,216 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 03:59:29,216 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 1 [2023-01-28 03:59:29,247 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:29,247 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 523 treesize of output 351 [2023-01-28 03:59:29,556 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:29,563 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:29,572 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:29,580 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:29,604 INFO L321 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2023-01-28 03:59:29,605 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 78 treesize of output 51 [2023-01-28 03:59:29,631 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:29,644 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 8 treesize of output 6 [2023-01-28 03:59:29,667 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:29,671 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:29,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 146 treesize of output 130 [2023-01-28 03:59:29,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:29,930 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 45 treesize of output 64 [2023-01-28 03:59:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 03:59:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450315824] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:30,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-01-28 03:59:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475492712] [2023-01-28 03:59:30,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:30,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 03:59:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 03:59:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=815, Unknown=1, NotChecked=58, Total=992 [2023-01-28 03:59:30,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 682 [2023-01-28 03:59:30,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 245 transitions, 3051 flow. Second operand has 32 states, 32 states have (on average 221.125) internal successors, (7076), 32 states have internal predecessors, (7076), 0 states have call successors, (0), 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 03:59:30,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:30,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 682 [2023-01-28 03:59:30,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:31,098 INFO L130 PetriNetUnfolder]: 2312/3368 cut-off events. [2023-01-28 03:59:31,098 INFO L131 PetriNetUnfolder]: For 30259/30259 co-relation queries the response was YES. [2023-01-28 03:59:31,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21145 conditions, 3368 events. 2312/3368 cut-off events. For 30259/30259 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15158 event pairs, 188 based on Foata normal form. 1/3369 useless extension candidates. Maximal degree in co-relation 21056. Up to 2635 conditions per place. [2023-01-28 03:59:31,125 INFO L137 encePairwiseOnDemand]: 670/682 looper letters, 183 selfloop transitions, 121 changer transitions 1/305 dead transitions. [2023-01-28 03:59:31,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 305 transitions, 4160 flow [2023-01-28 03:59:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:59:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:59:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2727 transitions. [2023-01-28 03:59:31,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33321114369501464 [2023-01-28 03:59:31,130 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2727 transitions. [2023-01-28 03:59:31,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2727 transitions. [2023-01-28 03:59:31,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:31,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2727 transitions. [2023-01-28 03:59:31,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.25) internal successors, (2727), 12 states have internal predecessors, (2727), 0 states have call successors, (0), 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 03:59:31,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 03:59:31,138 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 03:59:31,138 INFO L175 Difference]: Start difference. First operand has 141 places, 245 transitions, 3051 flow. Second operand 12 states and 2727 transitions. [2023-01-28 03:59:31,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 305 transitions, 4160 flow [2023-01-28 03:59:31,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 305 transitions, 3932 flow, removed 97 selfloop flow, removed 3 redundant places. [2023-01-28 03:59:31,296 INFO L231 Difference]: Finished difference. Result has 151 places, 255 transitions, 3315 flow [2023-01-28 03:59:31,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3315, PETRI_PLACES=151, PETRI_TRANSITIONS=255} [2023-01-28 03:59:31,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2023-01-28 03:59:31,296 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 255 transitions, 3315 flow [2023-01-28 03:59:31,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 221.125) internal successors, (7076), 32 states have internal predecessors, (7076), 0 states have call successors, (0), 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 03:59:31,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:31,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:31,302 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 03:59:31,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:31,498 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 03:59:31,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1580879102, now seen corresponding path program 12 times [2023-01-28 03:59:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300750804] [2023-01-28 03:59:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:32,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300750804] [2023-01-28 03:59:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300750804] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595611100] [2023-01-28 03:59:32,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:59:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:32,341 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 03:59:32,343 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 03:59:32,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:59:32,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:32,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 03:59:32,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:32,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:32,733 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 14 treesize of output 16 [2023-01-28 03:59:32,898 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:32,908 INFO L321 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2023-01-28 03:59:32,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 26 [2023-01-28 03:59:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:32,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:33,060 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((v_ArrVal_1080 (Array Int Int)) (~B~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1080))) (let ((.cse0 (select .cse2 ~B~0.base))) (<= (+ (select .cse0 .cse1) c_~asum~0 c_~bsum~0) (+ (select (select .cse2 c_~A~0.base) c_~A~0.offset) (select .cse0 c_~B~0.offset) c_~csum~0))))) (forall ((v_ArrVal_1080 (Array Int Int)) (~B~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1080))) (let ((.cse4 (select .cse3 ~B~0.base))) (<= (+ (select (select .cse3 c_~A~0.base) c_~A~0.offset) (select .cse4 c_~B~0.offset) c_~csum~0) (+ (select .cse4 .cse1) c_~asum~0 c_~bsum~0))))))) is different from false [2023-01-28 03:59:33,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:33,107 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 48 treesize of output 36 [2023-01-28 03:59:33,109 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 14 treesize of output 12 [2023-01-28 03:59:33,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:33,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595611100] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:33,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:33,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-01-28 03:59:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055191718] [2023-01-28 03:59:33,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:33,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 03:59:33,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 03:59:33,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=553, Unknown=1, NotChecked=48, Total=702 [2023-01-28 03:59:33,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 682 [2023-01-28 03:59:33,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 255 transitions, 3315 flow. Second operand has 27 states, 27 states have (on average 233.5185185185185) internal successors, (6305), 27 states have internal predecessors, (6305), 0 states have call successors, (0), 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 03:59:33,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:33,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 682 [2023-01-28 03:59:33,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:34,260 INFO L130 PetriNetUnfolder]: 2692/3924 cut-off events. [2023-01-28 03:59:34,260 INFO L131 PetriNetUnfolder]: For 33857/33857 co-relation queries the response was YES. [2023-01-28 03:59:34,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24652 conditions, 3924 events. 2692/3924 cut-off events. For 33857/33857 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18303 event pairs, 313 based on Foata normal form. 1/3925 useless extension candidates. Maximal degree in co-relation 24559. Up to 2964 conditions per place. [2023-01-28 03:59:34,288 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 191 selfloop transitions, 151 changer transitions 1/343 dead transitions. [2023-01-28 03:59:34,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 343 transitions, 4769 flow [2023-01-28 03:59:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:59:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:59:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2417 transitions. [2023-01-28 03:59:34,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3543988269794721 [2023-01-28 03:59:34,292 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2417 transitions. [2023-01-28 03:59:34,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2417 transitions. [2023-01-28 03:59:34,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:34,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2417 transitions. [2023-01-28 03:59:34,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 241.7) internal successors, (2417), 10 states have internal predecessors, (2417), 0 states have call successors, (0), 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 03:59:34,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 03:59:34,299 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 03:59:34,300 INFO L175 Difference]: Start difference. First operand has 151 places, 255 transitions, 3315 flow. Second operand 10 states and 2417 transitions. [2023-01-28 03:59:34,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 343 transitions, 4769 flow [2023-01-28 03:59:34,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 343 transitions, 4488 flow, removed 80 selfloop flow, removed 7 redundant places. [2023-01-28 03:59:34,470 INFO L231 Difference]: Finished difference. Result has 157 places, 286 transitions, 3929 flow [2023-01-28 03:59:34,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3929, PETRI_PLACES=157, PETRI_TRANSITIONS=286} [2023-01-28 03:59:34,470 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 125 predicate places. [2023-01-28 03:59:34,471 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 286 transitions, 3929 flow [2023-01-28 03:59:34,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 233.5185185185185) internal successors, (6305), 27 states have internal predecessors, (6305), 0 states have call successors, (0), 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 03:59:34,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:34,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:34,479 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 03:59:34,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:34,672 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 03:59:34,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1968390524, now seen corresponding path program 13 times [2023-01-28 03:59:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901281751] [2023-01-28 03:59:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:35,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901281751] [2023-01-28 03:59:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901281751] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807414564] [2023-01-28 03:59:35,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:59:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:35,545 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 03:59:35,551 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 03:59:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:35,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 90 conjunts are in the unsatisfiable core [2023-01-28 03:59:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:35,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:59:35,792 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:59:35,793 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 11 treesize of output 11 [2023-01-28 03:59:36,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:36,090 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 14 treesize of output 16 [2023-01-28 03:59:36,192 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 03:59:36,192 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 36 treesize of output 38 [2023-01-28 03:59:36,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:36,443 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 102 treesize of output 106 [2023-01-28 03:59:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:36,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:38,847 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((~C~0.offset Int) (v_ArrVal_1148 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1148))) (let ((.cse0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select .cse2 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) .cse3)))))) (forall ((~C~0.offset Int) (v_ArrVal_1148 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1148))) (let ((.cse5 (select (select .cse4 c_~A~0.base) c_~A~0.offset)) (.cse6 (select (select .cse4 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) ~C~0.offset (+ .cse5 .cse6))) c_~B~0.base) .cse3)) (+ .cse5 c_~csum~0 .cse6))))))) is different from false [2023-01-28 03:59:38,867 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_1148 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1148))) (let ((.cse0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select .cse2 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) c_~B~0.offset)))))) (forall ((~C~0.offset Int) (v_ArrVal_1148 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1148))) (let ((.cse4 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) (.cse5 (select (select .cse3 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse3 c_~C~0.base (store (select .cse3 c_~C~0.base) ~C~0.offset (+ .cse4 .cse5))) c_~B~0.base) c_~B~0.offset)) (+ .cse4 c_~csum~0 .cse5)))))) is different from false [2023-01-28 03:59:38,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:38,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2582 treesize of output 2254 [2023-01-28 03:59:38,936 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:38,936 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 566 treesize of output 542 [2023-01-28 03:59:41,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:41,848 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 86 treesize of output 68 [2023-01-28 03:59:41,854 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 54 treesize of output 52 [2023-01-28 03:59:41,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:41,887 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 16 treesize of output 17 [2023-01-28 03:59:41,897 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 14 treesize of output 8 [2023-01-28 03:59:41,913 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:41,913 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 142 treesize of output 104 [2023-01-28 03:59:41,920 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 100 treesize of output 92 [2023-01-28 03:59:42,000 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,006 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,021 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 8 treesize of output 6 [2023-01-28 03:59:42,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:42,056 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 16 treesize of output 17 [2023-01-28 03:59:42,067 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 14 treesize of output 8 [2023-01-28 03:59:42,079 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,083 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,096 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,102 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,108 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,120 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,125 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,131 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,136 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:42,275 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 16 treesize of output 17 [2023-01-28 03:59:42,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:42,292 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 16 treesize of output 17 [2023-01-28 03:59:42,305 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:42,322 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 150 treesize of output 110 [2023-01-28 03:59:42,332 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 65 treesize of output 61 [2023-01-28 03:59:42,392 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,397 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,403 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,412 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,417 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,422 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,428 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,433 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,436 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:42,487 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:42,487 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 267 treesize of output 193 [2023-01-28 03:59:42,892 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-01-28 03:59:42,893 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 162 treesize of output 1 [2023-01-28 03:59:42,917 INFO L321 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2023-01-28 03:59:42,918 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 163 treesize of output 110 [2023-01-28 03:59:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:42,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:42,968 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 74 [2023-01-28 03:59:42,999 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,004 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,013 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,024 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 14 treesize of output 8 [2023-01-28 03:59:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:43,037 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-01-28 03:59:43,046 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:43,057 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 03:59:43,057 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 1 [2023-01-28 03:59:43,064 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,068 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,074 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:43,126 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:43,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:43,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 146 treesize of output 130 [2023-01-28 03:59:43,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:43,342 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 45 treesize of output 64 [2023-01-28 03:59:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 03:59:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807414564] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:43,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-01-28 03:59:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036796430] [2023-01-28 03:59:43,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:43,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 03:59:43,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 03:59:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=710, Unknown=2, NotChecked=110, Total=930 [2023-01-28 03:59:43,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 682 [2023-01-28 03:59:43,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 286 transitions, 3929 flow. Second operand has 31 states, 31 states have (on average 206.25806451612902) internal successors, (6394), 31 states have internal predecessors, (6394), 0 states have call successors, (0), 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 03:59:43,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:43,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 682 [2023-01-28 03:59:43,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:44,670 INFO L130 PetriNetUnfolder]: 2780/4053 cut-off events. [2023-01-28 03:59:44,670 INFO L131 PetriNetUnfolder]: For 35317/35317 co-relation queries the response was YES. [2023-01-28 03:59:44,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26380 conditions, 4053 events. 2780/4053 cut-off events. For 35317/35317 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18999 event pairs, 375 based on Foata normal form. 1/4054 useless extension candidates. Maximal degree in co-relation 26283. Up to 3471 conditions per place. [2023-01-28 03:59:44,697 INFO L137 encePairwiseOnDemand]: 670/682 looper letters, 220 selfloop transitions, 117 changer transitions 1/338 dead transitions. [2023-01-28 03:59:44,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 338 transitions, 4985 flow [2023-01-28 03:59:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:59:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:59:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2547 transitions. [2023-01-28 03:59:44,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31121700879765396 [2023-01-28 03:59:44,701 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2547 transitions. [2023-01-28 03:59:44,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2547 transitions. [2023-01-28 03:59:44,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:44,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2547 transitions. [2023-01-28 03:59:44,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.25) internal successors, (2547), 12 states have internal predecessors, (2547), 0 states have call successors, (0), 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 03:59:44,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 03:59:44,709 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 03:59:44,709 INFO L175 Difference]: Start difference. First operand has 157 places, 286 transitions, 3929 flow. Second operand 12 states and 2547 transitions. [2023-01-28 03:59:44,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 338 transitions, 4985 flow [2023-01-28 03:59:44,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 338 transitions, 4789 flow, removed 81 selfloop flow, removed 3 redundant places. [2023-01-28 03:59:44,861 INFO L231 Difference]: Finished difference. Result has 168 places, 293 transitions, 4165 flow [2023-01-28 03:59:44,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4165, PETRI_PLACES=168, PETRI_TRANSITIONS=293} [2023-01-28 03:59:44,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2023-01-28 03:59:44,862 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 293 transitions, 4165 flow [2023-01-28 03:59:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 206.25806451612902) internal successors, (6394), 31 states have internal predecessors, (6394), 0 states have call successors, (0), 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 03:59:44,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:44,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:44,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-28 03:59:45,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:45,069 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 03:59:45,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1358423994, now seen corresponding path program 14 times [2023-01-28 03:59:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:45,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881105493] [2023-01-28 03:59:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:45,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881105493] [2023-01-28 03:59:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881105493] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207700858] [2023-01-28 03:59:45,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:59:45,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:45,814 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:59:45,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 03:59:45,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:59:45,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:45,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-28 03:59:45,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:45,963 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 96 treesize of output 94 [2023-01-28 03:59:46,133 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 21 treesize of output 21 [2023-01-28 03:59:46,249 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:46,250 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 35 treesize of output 23 [2023-01-28 03:59:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:46,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:46,387 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((v_ArrVal_1218 (Array Int Int)) (~B~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1218))) (let ((.cse0 (select .cse1 ~B~0.base))) (<= (+ (select .cse0 c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)) (+ c_~asum~0 c_~bsum~0 (select .cse0 .cse2)))))) (forall ((v_ArrVal_1218 (Array Int Int)) (~B~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1218))) (let ((.cse3 (select .cse4 ~B~0.base))) (<= (+ c_~asum~0 c_~bsum~0 (select .cse3 .cse2)) (+ (select .cse3 c_~B~0.offset) c_~csum~0 (select (select .cse4 c_~A~0.base) c_~A~0.offset)))))))) is different from false [2023-01-28 03:59:46,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:46,432 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 48 treesize of output 36 [2023-01-28 03:59:46,435 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 14 treesize of output 12 [2023-01-28 03:59:46,444 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207700858] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:46,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2023-01-28 03:59:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850514006] [2023-01-28 03:59:46,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:46,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 03:59:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:46,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 03:59:46,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=316, Unknown=3, NotChecked=36, Total=420 [2023-01-28 03:59:46,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 682 [2023-01-28 03:59:46,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 293 transitions, 4165 flow. Second operand has 21 states, 21 states have (on average 233.61904761904762) internal successors, (4906), 21 states have internal predecessors, (4906), 0 states have call successors, (0), 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 03:59:46,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:46,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 682 [2023-01-28 03:59:46,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:47,518 INFO L130 PetriNetUnfolder]: 2840/4142 cut-off events. [2023-01-28 03:59:47,518 INFO L131 PetriNetUnfolder]: For 36959/36959 co-relation queries the response was YES. [2023-01-28 03:59:47,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27326 conditions, 4142 events. 2840/4142 cut-off events. For 36959/36959 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19524 event pairs, 377 based on Foata normal form. 1/4143 useless extension candidates. Maximal degree in co-relation 27224. Up to 3518 conditions per place. [2023-01-28 03:59:47,546 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 228 selfloop transitions, 118 changer transitions 1/347 dead transitions. [2023-01-28 03:59:47,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 347 transitions, 5263 flow [2023-01-28 03:59:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:59:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:59:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2411 transitions. [2023-01-28 03:59:47,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3535190615835777 [2023-01-28 03:59:47,550 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2411 transitions. [2023-01-28 03:59:47,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2411 transitions. [2023-01-28 03:59:47,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:47,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2411 transitions. [2023-01-28 03:59:47,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 241.1) internal successors, (2411), 10 states have internal predecessors, (2411), 0 states have call successors, (0), 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 03:59:47,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 03:59:47,558 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 03:59:47,558 INFO L175 Difference]: Start difference. First operand has 168 places, 293 transitions, 4165 flow. Second operand 10 states and 2411 transitions. [2023-01-28 03:59:47,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 347 transitions, 5263 flow [2023-01-28 03:59:47,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 347 transitions, 4988 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-01-28 03:59:47,692 INFO L231 Difference]: Finished difference. Result has 171 places, 300 transitions, 4301 flow [2023-01-28 03:59:47,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=3892, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4301, PETRI_PLACES=171, PETRI_TRANSITIONS=300} [2023-01-28 03:59:47,693 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2023-01-28 03:59:47,693 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 300 transitions, 4301 flow [2023-01-28 03:59:47,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 233.61904761904762) internal successors, (4906), 21 states have internal predecessors, (4906), 0 states have call successors, (0), 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 03:59:47,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:47,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:47,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 03:59:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:47,894 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 03:59:47,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash 334026134, now seen corresponding path program 15 times [2023-01-28 03:59:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694734512] [2023-01-28 03:59:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:48,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694734512] [2023-01-28 03:59:48,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694734512] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531958999] [2023-01-28 03:59:48,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:59:48,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:48,775 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:59:48,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 03:59:48,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:59:48,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:48,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2023-01-28 03:59:48,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:48,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:59:49,003 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 03:59:49,003 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 11 treesize of output 11 [2023-01-28 03:59:49,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:59:49,197 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 14 treesize of output 16 [2023-01-28 03:59:49,325 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 03:59:49,325 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 36 treesize of output 38 [2023-01-28 03:59:49,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:49,533 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 102 treesize of output 106 [2023-01-28 03:59:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:49,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:50,709 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_1286 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1286))) (let ((.cse1 (select (select .cse0 c_~B~0.base) c_~B~0.offset)) (.cse2 (select (select .cse0 c_~A~0.base) c_~A~0.offset))) (<= (+ (select (select (store .cse0 c_~C~0.base (store (select .cse0 c_~C~0.base) ~C~0.offset (+ .cse1 .cse2))) c_~B~0.base) c_~B~0.offset) c_~asum~0 c_~bsum~0) (+ .cse1 .cse2 c_~csum~0))))) (forall ((~C~0.offset Int) (v_ArrVal_1286 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1286))) (let ((.cse3 (select (select .cse5 c_~B~0.base) c_~B~0.offset)) (.cse4 (select (select .cse5 c_~A~0.base) c_~A~0.offset))) (<= (+ .cse3 .cse4 c_~csum~0) (+ (select (select (store .cse5 c_~C~0.base (store (select .cse5 c_~C~0.base) ~C~0.offset (+ .cse3 .cse4))) c_~B~0.base) c_~B~0.offset) c_~asum~0 c_~bsum~0)))))) is different from false [2023-01-28 03:59:50,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:50,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1286 treesize of output 1134 [2023-01-28 03:59:50,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:50,772 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 566 treesize of output 542 [2023-01-28 03:59:53,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:53,409 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 80 treesize of output 80 [2023-01-28 03:59:53,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:53,552 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 105 treesize of output 95 [2023-01-28 03:59:53,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:53,669 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 16 treesize of output 17 [2023-01-28 03:59:53,679 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,683 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,687 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,690 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,694 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,701 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,704 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,710 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 12 treesize of output 6 [2023-01-28 03:59:53,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:53,724 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 90 treesize of output 70 [2023-01-28 03:59:53,762 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,765 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:53,785 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 146 treesize of output 120 [2023-01-28 03:59:53,853 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 03:59:53,853 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 349 treesize of output 1 [2023-01-28 03:59:53,966 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,972 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,976 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,982 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,984 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:53,997 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 349 treesize of output 329 [2023-01-28 03:59:54,016 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 270 treesize of output 242 [2023-01-28 03:59:54,066 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,069 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,094 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,098 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,103 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,106 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,111 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,116 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,119 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 03:59:54,132 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 03:59:54,133 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 349 treesize of output 1 [2023-01-28 03:59:54,144 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:54,145 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:54,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 146 treesize of output 130 [2023-01-28 03:59:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 03:59:54,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531958999] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:54,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:54,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2023-01-28 03:59:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811451151] [2023-01-28 03:59:54,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:54,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 03:59:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 03:59:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=706, Unknown=1, NotChecked=54, Total=870 [2023-01-28 03:59:54,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 682 [2023-01-28 03:59:54,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 300 transitions, 4301 flow. Second operand has 30 states, 30 states have (on average 221.26666666666668) internal successors, (6638), 30 states have internal predecessors, (6638), 0 states have call successors, (0), 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 03:59:54,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:54,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 682 [2023-01-28 03:59:54,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:55,620 INFO L130 PetriNetUnfolder]: 2928/4271 cut-off events. [2023-01-28 03:59:55,620 INFO L131 PetriNetUnfolder]: For 39004/39004 co-relation queries the response was YES. [2023-01-28 03:59:55,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28272 conditions, 4271 events. 2928/4271 cut-off events. For 39004/39004 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20273 event pairs, 352 based on Foata normal form. 1/4272 useless extension candidates. Maximal degree in co-relation 28169. Up to 3685 conditions per place. [2023-01-28 03:59:55,653 INFO L137 encePairwiseOnDemand]: 670/682 looper letters, 238 selfloop transitions, 115 changer transitions 1/354 dead transitions. [2023-01-28 03:59:55,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 354 transitions, 5405 flow [2023-01-28 03:59:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:59:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:59:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2725 transitions. [2023-01-28 03:59:55,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3329667644183773 [2023-01-28 03:59:55,656 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2725 transitions. [2023-01-28 03:59:55,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2725 transitions. [2023-01-28 03:59:55,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:55,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2725 transitions. [2023-01-28 03:59:55,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.08333333333334) internal successors, (2725), 12 states have internal predecessors, (2725), 0 states have call successors, (0), 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 03:59:55,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 03:59:55,664 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 03:59:55,664 INFO L175 Difference]: Start difference. First operand has 171 places, 300 transitions, 4301 flow. Second operand 12 states and 2725 transitions. [2023-01-28 03:59:55,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 354 transitions, 5405 flow [2023-01-28 03:59:55,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 354 transitions, 5090 flow, removed 50 selfloop flow, removed 7 redundant places. [2023-01-28 03:59:55,816 INFO L231 Difference]: Finished difference. Result has 177 places, 306 transitions, 4371 flow [2023-01-28 03:59:55,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4371, PETRI_PLACES=177, PETRI_TRANSITIONS=306} [2023-01-28 03:59:55,817 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2023-01-28 03:59:55,817 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 306 transitions, 4371 flow [2023-01-28 03:59:55,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 221.26666666666668) internal successors, (6638), 30 states have internal predecessors, (6638), 0 states have call successors, (0), 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 03:59:55,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:55,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:55,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 03:59:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:56,018 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 03:59:56,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 622578974, now seen corresponding path program 16 times [2023-01-28 03:59:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:56,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790638915] [2023-01-28 03:59:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:56,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790638915] [2023-01-28 03:59:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790638915] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366859194] [2023-01-28 03:59:56,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:59:56,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:56,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:56,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:59:56,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 03:59:56,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:59:56,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:56,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:59:56,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:59:57,219 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 03:59:57,229 INFO L321 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2023-01-28 03:59:57,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 26 [2023-01-28 03:59:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:57,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:59:57,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:59:57,378 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 34 treesize of output 87 [2023-01-28 03:59:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366859194] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:59:57,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:59:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2023-01-28 03:59:57,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210422810] [2023-01-28 03:59:57,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:59:57,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:59:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:59:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:59:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:59:57,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 03:59:57,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 306 transitions, 4371 flow. Second operand has 17 states, 17 states have (on average 238.11764705882354) internal successors, (4048), 17 states have internal predecessors, (4048), 0 states have call successors, (0), 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 03:59:57,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:59:57,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 03:59:57,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:59:58,526 INFO L130 PetriNetUnfolder]: 3177/4635 cut-off events. [2023-01-28 03:59:58,526 INFO L131 PetriNetUnfolder]: For 46009/46009 co-relation queries the response was YES. [2023-01-28 03:59:58,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31357 conditions, 4635 events. 3177/4635 cut-off events. For 46009/46009 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22215 event pairs, 984 based on Foata normal form. 1/4636 useless extension candidates. Maximal degree in co-relation 31251. Up to 4296 conditions per place. [2023-01-28 03:59:58,564 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 313 selfloop transitions, 67 changer transitions 1/381 dead transitions. [2023-01-28 03:59:58,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 381 transitions, 6124 flow [2023-01-28 03:59:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:59:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:59:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2214 transitions. [2023-01-28 03:59:58,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2023-01-28 03:59:58,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2214 transitions. [2023-01-28 03:59:58,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2214 transitions. [2023-01-28 03:59:58,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:59:58,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2214 transitions. [2023-01-28 03:59:58,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 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 03:59:58,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:59:58,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 03:59:58,572 INFO L175 Difference]: Start difference. First operand has 177 places, 306 transitions, 4371 flow. Second operand 9 states and 2214 transitions. [2023-01-28 03:59:58,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 381 transitions, 6124 flow [2023-01-28 03:59:58,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 381 transitions, 5772 flow, removed 48 selfloop flow, removed 9 redundant places. [2023-01-28 03:59:58,727 INFO L231 Difference]: Finished difference. Result has 180 places, 339 transitions, 4975 flow [2023-01-28 03:59:58,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4975, PETRI_PLACES=180, PETRI_TRANSITIONS=339} [2023-01-28 03:59:58,727 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2023-01-28 03:59:58,727 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 339 transitions, 4975 flow [2023-01-28 03:59:58,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 238.11764705882354) internal successors, (4048), 17 states have internal predecessors, (4048), 0 states have call successors, (0), 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 03:59:58,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:59:58,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:59:58,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 03:59:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:58,933 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 03:59:58,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:59:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1723736996, now seen corresponding path program 17 times [2023-01-28 03:59:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:59:58,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534005875] [2023-01-28 03:59:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:59:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:59:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:59:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:59:59,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:59:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534005875] [2023-01-28 03:59:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534005875] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:59:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324340582] [2023-01-28 03:59:59,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:59:59,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:59:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:59:59,689 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:59:59,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 03:59:59,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:59:59,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:59:59,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 03:59:59,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:00,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:00,223 INFO L321 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2023-01-28 04:00:00,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 26 [2023-01-28 04:00:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:00,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:00,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:00,373 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 34 treesize of output 87 [2023-01-28 04:00:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:00,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324340582] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:00,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2023-01-28 04:00:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790967485] [2023-01-28 04:00:00,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:00,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:00:00,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:00:00,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:00:00,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:00:00,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 339 transitions, 4975 flow. Second operand has 17 states, 17 states have (on average 238.0) internal successors, (4046), 17 states have internal predecessors, (4046), 0 states have call successors, (0), 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 04:00:00,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:00,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:00:00,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:01,680 INFO L130 PetriNetUnfolder]: 3371/4920 cut-off events. [2023-01-28 04:00:01,680 INFO L131 PetriNetUnfolder]: For 50419/50419 co-relation queries the response was YES. [2023-01-28 04:00:01,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33296 conditions, 4920 events. 3371/4920 cut-off events. For 50419/50419 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23914 event pairs, 1061 based on Foata normal form. 1/4921 useless extension candidates. Maximal degree in co-relation 33188. Up to 4647 conditions per place. [2023-01-28 04:00:01,722 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 341 selfloop transitions, 55 changer transitions 1/397 dead transitions. [2023-01-28 04:00:01,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 397 transitions, 6373 flow [2023-01-28 04:00:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:00:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:00:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2214 transitions. [2023-01-28 04:00:01,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2023-01-28 04:00:01,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2214 transitions. [2023-01-28 04:00:01,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2214 transitions. [2023-01-28 04:00:01,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:01,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2214 transitions. [2023-01-28 04:00:01,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 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 04:00:01,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:01,730 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:01,731 INFO L175 Difference]: Start difference. First operand has 180 places, 339 transitions, 4975 flow. Second operand 9 states and 2214 transitions. [2023-01-28 04:00:01,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 397 transitions, 6373 flow [2023-01-28 04:00:01,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 397 transitions, 6160 flow, removed 102 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:01,915 INFO L231 Difference]: Finished difference. Result has 191 places, 355 transitions, 5263 flow [2023-01-28 04:00:01,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5263, PETRI_PLACES=191, PETRI_TRANSITIONS=355} [2023-01-28 04:00:01,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2023-01-28 04:00:01,916 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 355 transitions, 5263 flow [2023-01-28 04:00:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 238.0) internal successors, (4046), 17 states have internal predecessors, (4046), 0 states have call successors, (0), 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 04:00:01,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:01,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:01,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:02,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 04:00:02,117 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 04:00:02,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 340804554, now seen corresponding path program 18 times [2023-01-28 04:00:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302336916] [2023-01-28 04:00:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302336916] [2023-01-28 04:00:02,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302336916] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188101587] [2023-01-28 04:00:02,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:00:02,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:02,693 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:02,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 04:00:02,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:00:02,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:02,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:00:02,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:03,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:03,089 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 35 treesize of output 23 [2023-01-28 04:00:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:03,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:03,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:03,238 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 34 treesize of output 87 [2023-01-28 04:00:03,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:00:03,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:03,360 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 20 treesize of output 13 [2023-01-28 04:00:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188101587] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:03,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 16 [2023-01-28 04:00:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989291957] [2023-01-28 04:00:03,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:00:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:00:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:00:03,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:00:03,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 355 transitions, 5263 flow. Second operand has 18 states, 18 states have (on average 237.94444444444446) internal successors, (4283), 18 states have internal predecessors, (4283), 0 states have call successors, (0), 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 04:00:03,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:03,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:00:03,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:04,600 INFO L130 PetriNetUnfolder]: 3537/5165 cut-off events. [2023-01-28 04:00:04,601 INFO L131 PetriNetUnfolder]: For 55254/55254 co-relation queries the response was YES. [2023-01-28 04:00:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35016 conditions, 5165 events. 3537/5165 cut-off events. For 55254/55254 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25305 event pairs, 1134 based on Foata normal form. 1/5166 useless extension candidates. Maximal degree in co-relation 34903. Up to 4858 conditions per place. [2023-01-28 04:00:04,646 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 354 selfloop transitions, 63 changer transitions 1/418 dead transitions. [2023-01-28 04:00:04,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 418 transitions, 6859 flow [2023-01-28 04:00:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:00:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:00:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2216 transitions. [2023-01-28 04:00:04,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361029651352232 [2023-01-28 04:00:04,648 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2216 transitions. [2023-01-28 04:00:04,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2216 transitions. [2023-01-28 04:00:04,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:04,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2216 transitions. [2023-01-28 04:00:04,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.22222222222223) internal successors, (2216), 9 states have internal predecessors, (2216), 0 states have call successors, (0), 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 04:00:04,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:04,653 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:04,654 INFO L175 Difference]: Start difference. First operand has 191 places, 355 transitions, 5263 flow. Second operand 9 states and 2216 transitions. [2023-01-28 04:00:04,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 418 transitions, 6859 flow [2023-01-28 04:00:04,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 418 transitions, 6599 flow, removed 124 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:04,828 INFO L231 Difference]: Finished difference. Result has 201 places, 374 transitions, 5656 flow [2023-01-28 04:00:04,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5003, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5656, PETRI_PLACES=201, PETRI_TRANSITIONS=374} [2023-01-28 04:00:04,828 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2023-01-28 04:00:04,828 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 374 transitions, 5656 flow [2023-01-28 04:00:04,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 237.94444444444446) internal successors, (4283), 18 states have internal predecessors, (4283), 0 states have call successors, (0), 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 04:00:04,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:04,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:04,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 04:00:05,030 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 04:00:05,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:05,030 INFO L85 PathProgramCache]: Analyzing trace with hash 414640658, now seen corresponding path program 19 times [2023-01-28 04:00:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:05,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060671817] [2023-01-28 04:00:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:05,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060671817] [2023-01-28 04:00:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060671817] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779605629] [2023-01-28 04:00:05,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:00:05,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:05,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:05,660 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:05,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 04:00:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:05,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:00:05,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:05,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:05,995 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 35 treesize of output 23 [2023-01-28 04:00:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:06,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:06,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:06,146 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 34 treesize of output 87 [2023-01-28 04:00:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:06,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779605629] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:06,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:06,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 14 [2023-01-28 04:00:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094636265] [2023-01-28 04:00:06,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:06,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 04:00:06,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 04:00:06,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:00:06,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:00:06,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 374 transitions, 5656 flow. Second operand has 16 states, 16 states have (on average 238.1875) internal successors, (3811), 16 states have internal predecessors, (3811), 0 states have call successors, (0), 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 04:00:06,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:06,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:00:06,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:07,447 INFO L130 PetriNetUnfolder]: 3637/5312 cut-off events. [2023-01-28 04:00:07,447 INFO L131 PetriNetUnfolder]: For 57333/57333 co-relation queries the response was YES. [2023-01-28 04:00:07,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35528 conditions, 5312 events. 3637/5312 cut-off events. For 57333/57333 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 26183 event pairs, 1187 based on Foata normal form. 1/5313 useless extension candidates. Maximal degree in co-relation 35411. Up to 5109 conditions per place. [2023-01-28 04:00:07,492 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 364 selfloop transitions, 54 changer transitions 1/419 dead transitions. [2023-01-28 04:00:07,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 419 transitions, 6895 flow [2023-01-28 04:00:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:00:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:00:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2206 transitions. [2023-01-28 04:00:07,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3594004561746497 [2023-01-28 04:00:07,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2206 transitions. [2023-01-28 04:00:07,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2206 transitions. [2023-01-28 04:00:07,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:07,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2206 transitions. [2023-01-28 04:00:07,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 245.11111111111111) internal successors, (2206), 9 states have internal predecessors, (2206), 0 states have call successors, (0), 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 04:00:07,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:07,499 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:07,499 INFO L175 Difference]: Start difference. First operand has 201 places, 374 transitions, 5656 flow. Second operand 9 states and 2206 transitions. [2023-01-28 04:00:07,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 419 transitions, 6895 flow [2023-01-28 04:00:07,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 419 transitions, 6587 flow, removed 131 selfloop flow, removed 3 redundant places. [2023-01-28 04:00:07,681 INFO L231 Difference]: Finished difference. Result has 209 places, 384 transitions, 5654 flow [2023-01-28 04:00:07,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5348, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5654, PETRI_PLACES=209, PETRI_TRANSITIONS=384} [2023-01-28 04:00:07,682 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2023-01-28 04:00:07,682 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 384 transitions, 5654 flow [2023-01-28 04:00:07,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 238.1875) internal successors, (3811), 16 states have internal predecessors, (3811), 0 states have call successors, (0), 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 04:00:07,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:07,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:07,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:07,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 04:00:07,885 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 04:00:07,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1784586078, now seen corresponding path program 20 times [2023-01-28 04:00:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688010764] [2023-01-28 04:00:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:00:08,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688010764] [2023-01-28 04:00:08,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688010764] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755848702] [2023-01-28 04:00:08,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:00:08,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:08,921 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:08,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 04:00:09,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:00:09,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 94 conjunts are in the unsatisfiable core [2023-01-28 04:00:09,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:09,133 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:00:09,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:00:09,181 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:00:09,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 04:00:09,244 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:00:09,244 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 11 treesize of output 11 [2023-01-28 04:00:09,464 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:00:09,464 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 36 treesize of output 38 [2023-01-28 04:00:09,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:09,635 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 102 treesize of output 106 [2023-01-28 04:00:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:09,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:12,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:12,512 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 74 treesize of output 118 [2023-01-28 04:00:12,835 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:12,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:00:12,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:12,844 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 20 treesize of output 13 [2023-01-28 04:00:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755848702] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:13,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:13,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 27 [2023-01-28 04:00:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486915617] [2023-01-28 04:00:13,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:13,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:00:13,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:00:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2023-01-28 04:00:13,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 682 [2023-01-28 04:00:13,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 384 transitions, 5654 flow. Second operand has 29 states, 29 states have (on average 203.13793103448276) internal successors, (5891), 29 states have internal predecessors, (5891), 0 states have call successors, (0), 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 04:00:13,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:13,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 682 [2023-01-28 04:00:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:15,057 INFO L130 PetriNetUnfolder]: 3717/5429 cut-off events. [2023-01-28 04:00:15,057 INFO L131 PetriNetUnfolder]: For 57723/57723 co-relation queries the response was YES. [2023-01-28 04:00:15,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35757 conditions, 5429 events. 3717/5429 cut-off events. For 57723/57723 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26903 event pairs, 1229 based on Foata normal form. 1/5430 useless extension candidates. Maximal degree in co-relation 35636. Up to 5240 conditions per place. [2023-01-28 04:00:15,101 INFO L137 encePairwiseOnDemand]: 668/682 looper letters, 361 selfloop transitions, 59 changer transitions 1/421 dead transitions. [2023-01-28 04:00:15,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 421 transitions, 6894 flow [2023-01-28 04:00:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 04:00:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 04:00:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2903 transitions. [2023-01-28 04:00:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3040427314620863 [2023-01-28 04:00:15,104 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2903 transitions. [2023-01-28 04:00:15,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2903 transitions. [2023-01-28 04:00:15,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:15,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2903 transitions. [2023-01-28 04:00:15,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 207.35714285714286) internal successors, (2903), 14 states have internal predecessors, (2903), 0 states have call successors, (0), 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 04:00:15,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 682.0) internal successors, (10230), 15 states have internal predecessors, (10230), 0 states have call successors, (0), 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 04:00:15,113 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 682.0) internal successors, (10230), 15 states have internal predecessors, (10230), 0 states have call successors, (0), 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 04:00:15,113 INFO L175 Difference]: Start difference. First operand has 209 places, 384 transitions, 5654 flow. Second operand 14 states and 2903 transitions. [2023-01-28 04:00:15,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 421 transitions, 6894 flow [2023-01-28 04:00:15,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 421 transitions, 6682 flow, removed 57 selfloop flow, removed 5 redundant places. [2023-01-28 04:00:15,281 INFO L231 Difference]: Finished difference. Result has 219 places, 390 transitions, 5760 flow [2023-01-28 04:00:15,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5442, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5760, PETRI_PLACES=219, PETRI_TRANSITIONS=390} [2023-01-28 04:00:15,282 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2023-01-28 04:00:15,282 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 390 transitions, 5760 flow [2023-01-28 04:00:15,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 203.13793103448276) internal successors, (5891), 29 states have internal predecessors, (5891), 0 states have call successors, (0), 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 04:00:15,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:15,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:15,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:15,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:15,483 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 04:00:15,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1666852562, now seen corresponding path program 21 times [2023-01-28 04:00:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:15,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681147706] [2023-01-28 04:00:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:00:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681147706] [2023-01-28 04:00:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681147706] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:16,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266466044] [2023-01-28 04:00:16,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:00:16,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:16,571 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:16,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 04:00:16,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:00:16,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 04:00:16,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:16,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:00:16,830 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:00:16,830 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 11 treesize of output 11 [2023-01-28 04:00:17,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:17,235 INFO L321 Elim1Store]: treesize reduction 67, result has 22.1 percent of original size [2023-01-28 04:00:17,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 41 [2023-01-28 04:00:17,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:17,598 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 121 treesize of output 133 [2023-01-28 04:00:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:17,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:19,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:19,698 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 74 treesize of output 118 [2023-01-28 04:00:19,955 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:20,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266466044] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:20,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:20,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 26 [2023-01-28 04:00:20,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782495222] [2023-01-28 04:00:20,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:20,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:00:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:20,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:00:20,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-01-28 04:00:20,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 682 [2023-01-28 04:00:20,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 390 transitions, 5760 flow. Second operand has 28 states, 28 states have (on average 203.42857142857142) internal successors, (5696), 28 states have internal predecessors, (5696), 0 states have call successors, (0), 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 04:00:20,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:20,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 682 [2023-01-28 04:00:20,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:21,982 INFO L130 PetriNetUnfolder]: 3805/5558 cut-off events. [2023-01-28 04:00:21,983 INFO L131 PetriNetUnfolder]: For 61049/61049 co-relation queries the response was YES. [2023-01-28 04:00:22,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36561 conditions, 5558 events. 3805/5558 cut-off events. For 61049/61049 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 27719 event pairs, 1257 based on Foata normal form. 1/5559 useless extension candidates. Maximal degree in co-relation 36434. Up to 5343 conditions per place. [2023-01-28 04:00:22,040 INFO L137 encePairwiseOnDemand]: 667/682 looper letters, 368 selfloop transitions, 65 changer transitions 1/434 dead transitions. [2023-01-28 04:00:22,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 434 transitions, 7053 flow [2023-01-28 04:00:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:00:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:00:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2709 transitions. [2023-01-28 04:00:22,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30554928942025716 [2023-01-28 04:00:22,044 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2709 transitions. [2023-01-28 04:00:22,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2709 transitions. [2023-01-28 04:00:22,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:22,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2709 transitions. [2023-01-28 04:00:22,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 208.3846153846154) internal successors, (2709), 13 states have internal predecessors, (2709), 0 states have call successors, (0), 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 04:00:22,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:00:22,051 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:00:22,051 INFO L175 Difference]: Start difference. First operand has 219 places, 390 transitions, 5760 flow. Second operand 13 states and 2709 transitions. [2023-01-28 04:00:22,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 434 transitions, 7053 flow [2023-01-28 04:00:22,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 434 transitions, 6822 flow, removed 81 selfloop flow, removed 9 redundant places. [2023-01-28 04:00:22,274 INFO L231 Difference]: Finished difference. Result has 225 places, 397 transitions, 5867 flow [2023-01-28 04:00:22,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5529, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5867, PETRI_PLACES=225, PETRI_TRANSITIONS=397} [2023-01-28 04:00:22,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 193 predicate places. [2023-01-28 04:00:22,274 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 397 transitions, 5867 flow [2023-01-28 04:00:22,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 203.42857142857142) internal successors, (5696), 28 states have internal predecessors, (5696), 0 states have call successors, (0), 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 04:00:22,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:22,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:22,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:22,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 04:00:22,479 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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 04:00:22,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 395267760, now seen corresponding path program 22 times [2023-01-28 04:00:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121094385] [2023-01-28 04:00:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:23,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121094385] [2023-01-28 04:00:23,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121094385] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894732605] [2023-01-28 04:00:23,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:00:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:23,007 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:23,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 04:00:23,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:00:23,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:23,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:00:23,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:23,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:23,439 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 35 treesize of output 23 [2023-01-28 04:00:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:23,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:23,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:23,587 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 34 treesize of output 87 [2023-01-28 04:00:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894732605] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:23,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:23,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2023-01-28 04:00:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431072556] [2023-01-28 04:00:23,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:23,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:00:23,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:23,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:00:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:00:23,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:00:23,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 397 transitions, 5867 flow. Second operand has 17 states, 17 states have (on average 238.35294117647058) internal successors, (4052), 17 states have internal predecessors, (4052), 0 states have call successors, (0), 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 04:00:23,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:23,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:00:23,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:25,035 INFO L130 PetriNetUnfolder]: 3895/5691 cut-off events. [2023-01-28 04:00:25,035 INFO L131 PetriNetUnfolder]: For 64200/64200 co-relation queries the response was YES. [2023-01-28 04:00:25,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37442 conditions, 5691 events. 3895/5691 cut-off events. For 64200/64200 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 28473 event pairs, 1290 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 37311. Up to 5472 conditions per place. [2023-01-28 04:00:25,083 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 382 selfloop transitions, 59 changer transitions 1/442 dead transitions. [2023-01-28 04:00:25,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 442 transitions, 7150 flow [2023-01-28 04:00:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:00:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:00:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2210 transitions. [2023-01-28 04:00:25,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3600521342456826 [2023-01-28 04:00:25,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2210 transitions. [2023-01-28 04:00:25,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2210 transitions. [2023-01-28 04:00:25,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:25,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2210 transitions. [2023-01-28 04:00:25,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 245.55555555555554) internal successors, (2210), 9 states have internal predecessors, (2210), 0 states have call successors, (0), 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 04:00:25,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:25,093 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:25,093 INFO L175 Difference]: Start difference. First operand has 225 places, 397 transitions, 5867 flow. Second operand 9 states and 2210 transitions. [2023-01-28 04:00:25,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 442 transitions, 7150 flow [2023-01-28 04:00:25,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 442 transitions, 6916 flow, removed 57 selfloop flow, removed 9 redundant places. [2023-01-28 04:00:25,295 INFO L231 Difference]: Finished difference. Result has 226 places, 403 transitions, 5910 flow [2023-01-28 04:00:25,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5633, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5910, PETRI_PLACES=226, PETRI_TRANSITIONS=403} [2023-01-28 04:00:25,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2023-01-28 04:00:25,296 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 403 transitions, 5910 flow [2023-01-28 04:00:25,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 238.35294117647058) internal successors, (4052), 17 states have internal predecessors, (4052), 0 states have call successors, (0), 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 04:00:25,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:25,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:25,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 04:00:25,499 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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 04:00:25,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2138698910, now seen corresponding path program 23 times [2023-01-28 04:00:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375952205] [2023-01-28 04:00:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:26,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375952205] [2023-01-28 04:00:26,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375952205] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849349815] [2023-01-28 04:00:26,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:00:26,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:26,175 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:26,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 04:00:26,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:00:26,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:26,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:00:26,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:26,699 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:26,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:26,704 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 35 treesize of output 23 [2023-01-28 04:00:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:26,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:26,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:26,883 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 42 treesize of output 95 [2023-01-28 04:00:27,036 INFO L321 Elim1Store]: treesize reduction 65, result has 23.5 percent of original size [2023-01-28 04:00:27,036 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 42 treesize of output 30 [2023-01-28 04:00:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:27,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849349815] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:27,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2023-01-28 04:00:27,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448499115] [2023-01-28 04:00:27,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:00:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:00:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:00:27,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:00:27,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 403 transitions, 5910 flow. Second operand has 17 states, 17 states have (on average 238.2941176470588) internal successors, (4051), 17 states have internal predecessors, (4051), 0 states have call successors, (0), 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 04:00:27,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:27,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:00:27,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:28,518 INFO L130 PetriNetUnfolder]: 3995/5838 cut-off events. [2023-01-28 04:00:28,518 INFO L131 PetriNetUnfolder]: For 68266/68266 co-relation queries the response was YES. [2023-01-28 04:00:28,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38297 conditions, 5838 events. 3995/5838 cut-off events. For 68266/68266 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29402 event pairs, 1350 based on Foata normal form. 1/5839 useless extension candidates. Maximal degree in co-relation 38169. Up to 5659 conditions per place. [2023-01-28 04:00:28,565 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 391 selfloop transitions, 51 changer transitions 1/443 dead transitions. [2023-01-28 04:00:28,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 443 transitions, 7163 flow [2023-01-28 04:00:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:00:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:00:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2200 transitions. [2023-01-28 04:00:28,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2023-01-28 04:00:28,567 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2200 transitions. [2023-01-28 04:00:28,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2200 transitions. [2023-01-28 04:00:28,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:28,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2200 transitions. [2023-01-28 04:00:28,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.44444444444446) internal successors, (2200), 9 states have internal predecessors, (2200), 0 states have call successors, (0), 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 04:00:28,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:28,573 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:28,573 INFO L175 Difference]: Start difference. First operand has 226 places, 403 transitions, 5910 flow. Second operand 9 states and 2200 transitions. [2023-01-28 04:00:28,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 443 transitions, 7163 flow [2023-01-28 04:00:28,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 443 transitions, 6945 flow, removed 53 selfloop flow, removed 6 redundant places. [2023-01-28 04:00:28,765 INFO L231 Difference]: Finished difference. Result has 232 places, 413 transitions, 6027 flow [2023-01-28 04:00:28,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5694, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6027, PETRI_PLACES=232, PETRI_TRANSITIONS=413} [2023-01-28 04:00:28,766 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2023-01-28 04:00:28,766 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 413 transitions, 6027 flow [2023-01-28 04:00:28,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 238.2941176470588) internal successors, (4051), 17 states have internal predecessors, (4051), 0 states have call successors, (0), 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 04:00:28,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:28,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:28,967 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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 04:00:28,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash 549899712, now seen corresponding path program 24 times [2023-01-28 04:00:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343580185] [2023-01-28 04:00:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:29,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343580185] [2023-01-28 04:00:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343580185] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007782567] [2023-01-28 04:00:29,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:00:29,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:29,647 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:29,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 04:00:29,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:00:29,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:29,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:00:29,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:30,076 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:30,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:30,080 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 28 treesize of output 20 [2023-01-28 04:00:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:30,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:30,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:30,211 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 42 treesize of output 95 [2023-01-28 04:00:30,426 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:00:30,427 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 42 treesize of output 38 [2023-01-28 04:00:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007782567] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:30,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2023-01-28 04:00:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330449115] [2023-01-28 04:00:30,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:30,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:00:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:00:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:00:30,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:00:30,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 413 transitions, 6027 flow. Second operand has 17 states, 17 states have (on average 238.2941176470588) internal successors, (4051), 17 states have internal predecessors, (4051), 0 states have call successors, (0), 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 04:00:30,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:30,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:00:30,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:31,794 INFO L130 PetriNetUnfolder]: 4095/5985 cut-off events. [2023-01-28 04:00:31,794 INFO L131 PetriNetUnfolder]: For 71901/71901 co-relation queries the response was YES. [2023-01-28 04:00:31,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39240 conditions, 5985 events. 4095/5985 cut-off events. For 71901/71901 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 30299 event pairs, 1390 based on Foata normal form. 1/5986 useless extension candidates. Maximal degree in co-relation 39108. Up to 5806 conditions per place. [2023-01-28 04:00:31,858 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 403 selfloop transitions, 51 changer transitions 1/455 dead transitions. [2023-01-28 04:00:31,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 455 transitions, 7354 flow [2023-01-28 04:00:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:00:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:00:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2202 transitions. [2023-01-28 04:00:31,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587487781036168 [2023-01-28 04:00:31,861 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2202 transitions. [2023-01-28 04:00:31,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2202 transitions. [2023-01-28 04:00:31,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:31,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2202 transitions. [2023-01-28 04:00:31,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.66666666666666) internal successors, (2202), 9 states have internal predecessors, (2202), 0 states have call successors, (0), 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 04:00:31,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:31,867 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:00:31,867 INFO L175 Difference]: Start difference. First operand has 232 places, 413 transitions, 6027 flow. Second operand 9 states and 2202 transitions. [2023-01-28 04:00:31,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 455 transitions, 7354 flow [2023-01-28 04:00:32,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 455 transitions, 7146 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-01-28 04:00:32,133 INFO L231 Difference]: Finished difference. Result has 240 places, 423 transitions, 6179 flow [2023-01-28 04:00:32,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5821, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6179, PETRI_PLACES=240, PETRI_TRANSITIONS=423} [2023-01-28 04:00:32,133 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2023-01-28 04:00:32,134 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 423 transitions, 6179 flow [2023-01-28 04:00:32,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 238.2941176470588) internal successors, (4051), 17 states have internal predecessors, (4051), 0 states have call successors, (0), 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 04:00:32,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:32,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:32,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:32,335 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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 04:00:32,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1102021878, now seen corresponding path program 25 times [2023-01-28 04:00:32,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060047173] [2023-01-28 04:00:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060047173] [2023-01-28 04:00:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060047173] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230494049] [2023-01-28 04:00:33,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:00:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:33,213 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:33,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 04:00:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2023-01-28 04:00:33,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:33,414 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:00:33,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:00:33,454 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 04:00:33,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2023-01-28 04:00:33,501 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 04:00:33,501 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 04:00:33,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:33,759 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:00:33,759 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 21 treesize of output 24 [2023-01-28 04:00:33,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:33,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:33,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2023-01-28 04:00:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:33,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:34,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:34,093 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 195 treesize of output 215 [2023-01-28 04:00:35,292 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:35,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:35,339 INFO L321 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-01-28 04:00:35,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 65 [2023-01-28 04:00:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:35,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230494049] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:35,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:35,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-01-28 04:00:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049135615] [2023-01-28 04:00:35,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:35,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:00:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:00:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:00:35,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 04:00:35,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 423 transitions, 6179 flow. Second operand has 23 states, 23 states have (on average 223.2608695652174) internal successors, (5135), 23 states have internal predecessors, (5135), 0 states have call successors, (0), 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 04:00:35,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:35,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 04:00:35,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:37,347 INFO L130 PetriNetUnfolder]: 4193/6128 cut-off events. [2023-01-28 04:00:37,347 INFO L131 PetriNetUnfolder]: For 78265/78265 co-relation queries the response was YES. [2023-01-28 04:00:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40367 conditions, 6128 events. 4193/6128 cut-off events. For 78265/78265 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 31195 event pairs, 1419 based on Foata normal form. 1/6129 useless extension candidates. Maximal degree in co-relation 40231. Up to 5953 conditions per place. [2023-01-28 04:00:37,411 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 407 selfloop transitions, 54 changer transitions 1/462 dead transitions. [2023-01-28 04:00:37,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 462 transitions, 7596 flow [2023-01-28 04:00:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:00:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:00:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2737 transitions. [2023-01-28 04:00:37,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33443304007820135 [2023-01-28 04:00:37,413 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2737 transitions. [2023-01-28 04:00:37,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2737 transitions. [2023-01-28 04:00:37,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:37,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2737 transitions. [2023-01-28 04:00:37,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.08333333333334) internal successors, (2737), 12 states have internal predecessors, (2737), 0 states have call successors, (0), 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 04:00:37,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:00:37,419 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:00:37,419 INFO L175 Difference]: Start difference. First operand has 240 places, 423 transitions, 6179 flow. Second operand 12 states and 2737 transitions. [2023-01-28 04:00:37,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 462 transitions, 7596 flow [2023-01-28 04:00:37,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 462 transitions, 7372 flow, removed 68 selfloop flow, removed 4 redundant places. [2023-01-28 04:00:37,654 INFO L231 Difference]: Finished difference. Result has 249 places, 432 transitions, 6381 flow [2023-01-28 04:00:37,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=5955, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6381, PETRI_PLACES=249, PETRI_TRANSITIONS=432} [2023-01-28 04:00:37,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2023-01-28 04:00:37,655 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 432 transitions, 6381 flow [2023-01-28 04:00:37,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 223.2608695652174) internal successors, (5135), 23 states have internal predecessors, (5135), 0 states have call successors, (0), 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 04:00:37,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:37,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:37,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:37,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:37,856 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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 04:00:37,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 697495096, now seen corresponding path program 26 times [2023-01-28 04:00:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856575287] [2023-01-28 04:00:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:00:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856575287] [2023-01-28 04:00:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856575287] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688888968] [2023-01-28 04:00:39,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:00:39,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:39,254 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 04:00:39,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:00:39,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:39,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 94 conjunts are in the unsatisfiable core [2023-01-28 04:00:39,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:39,474 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:00:39,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:00:39,524 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:00:39,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 04:00:39,584 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:00:39,584 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 11 treesize of output 11 [2023-01-28 04:00:39,876 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:00:39,876 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 29 treesize of output 35 [2023-01-28 04:00:39,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:39,988 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 76 treesize of output 96 [2023-01-28 04:00:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:40,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:40,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:40,618 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 90 treesize of output 134 [2023-01-28 04:00:40,804 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:40,827 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:00:40,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 38 [2023-01-28 04:00:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688888968] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:41,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 31 [2023-01-28 04:00:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848233466] [2023-01-28 04:00:41,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:41,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-28 04:00:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-28 04:00:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2023-01-28 04:00:41,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 682 [2023-01-28 04:00:41,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 432 transitions, 6381 flow. Second operand has 33 states, 33 states have (on average 190.03030303030303) internal successors, (6271), 33 states have internal predecessors, (6271), 0 states have call successors, (0), 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 04:00:41,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:41,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 682 [2023-01-28 04:00:41,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:43,537 INFO L130 PetriNetUnfolder]: 4380/6404 cut-off events. [2023-01-28 04:00:43,538 INFO L131 PetriNetUnfolder]: For 87285/87285 co-relation queries the response was YES. [2023-01-28 04:00:43,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43345 conditions, 6404 events. 4380/6404 cut-off events. For 87285/87285 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 32577 event pairs, 1463 based on Foata normal form. 1/6405 useless extension candidates. Maximal degree in co-relation 42684. Up to 6158 conditions per place. [2023-01-28 04:00:43,731 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 436 selfloop transitions, 98 changer transitions 1/535 dead transitions. [2023-01-28 04:00:43,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 535 transitions, 9186 flow [2023-01-28 04:00:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:00:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:00:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3506 transitions. [2023-01-28 04:00:43,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2855979146301727 [2023-01-28 04:00:43,735 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3506 transitions. [2023-01-28 04:00:43,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3506 transitions. [2023-01-28 04:00:43,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:43,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3506 transitions. [2023-01-28 04:00:43,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 194.77777777777777) internal successors, (3506), 18 states have internal predecessors, (3506), 0 states have call successors, (0), 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 04:00:43,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 682.0) internal successors, (12958), 19 states have internal predecessors, (12958), 0 states have call successors, (0), 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 04:00:43,743 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 682.0) internal successors, (12958), 19 states have internal predecessors, (12958), 0 states have call successors, (0), 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 04:00:43,743 INFO L175 Difference]: Start difference. First operand has 249 places, 432 transitions, 6381 flow. Second operand 18 states and 3506 transitions. [2023-01-28 04:00:43,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 535 transitions, 9186 flow [2023-01-28 04:00:44,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 535 transitions, 8807 flow, removed 134 selfloop flow, removed 7 redundant places. [2023-01-28 04:00:44,162 INFO L231 Difference]: Finished difference. Result has 262 places, 482 transitions, 7549 flow [2023-01-28 04:00:44,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=6057, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7549, PETRI_PLACES=262, PETRI_TRANSITIONS=482} [2023-01-28 04:00:44,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2023-01-28 04:00:44,163 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 482 transitions, 7549 flow [2023-01-28 04:00:44,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 190.03030303030303) internal successors, (6271), 33 states have internal predecessors, (6271), 0 states have call successors, (0), 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 04:00:44,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:44,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:44,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:44,372 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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 04:00:44,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2137222784, now seen corresponding path program 27 times [2023-01-28 04:00:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:44,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552727817] [2023-01-28 04:00:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:45,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552727817] [2023-01-28 04:00:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552727817] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763145957] [2023-01-28 04:00:45,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:00:45,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:45,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:45,056 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:45,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 04:00:45,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:00:45,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:45,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 98 conjunts are in the unsatisfiable core [2023-01-28 04:00:45,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:45,288 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:00:45,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:00:45,321 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:00:45,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 04:00:45,392 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-28 04:00:45,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:00:45,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-01-28 04:00:45,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-01-28 04:00:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:45,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:46,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:46,015 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 195 treesize of output 215 [2023-01-28 04:00:47,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:47,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:47,160 INFO L321 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-01-28 04:00:47,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 65 [2023-01-28 04:00:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763145957] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:47,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-01-28 04:00:47,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494662102] [2023-01-28 04:00:47,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:47,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:00:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:00:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-01-28 04:00:47,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 04:00:47,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 482 transitions, 7549 flow. Second operand has 29 states, 29 states have (on average 223.3448275862069) internal successors, (6477), 29 states have internal predecessors, (6477), 0 states have call successors, (0), 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 04:00:47,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:47,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 04:00:47,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:49,202 INFO L130 PetriNetUnfolder]: 4460/6521 cut-off events. [2023-01-28 04:00:49,202 INFO L131 PetriNetUnfolder]: For 91368/91368 co-relation queries the response was YES. [2023-01-28 04:00:49,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44141 conditions, 6521 events. 4460/6521 cut-off events. For 91368/91368 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 33317 event pairs, 1493 based on Foata normal form. 1/6522 useless extension candidates. Maximal degree in co-relation 43476. Up to 6275 conditions per place. [2023-01-28 04:00:49,269 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 418 selfloop transitions, 97 changer transitions 1/516 dead transitions. [2023-01-28 04:00:49,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 516 transitions, 9021 flow [2023-01-28 04:00:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:00:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:00:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2735 transitions. [2023-01-28 04:00:49,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334188660801564 [2023-01-28 04:00:49,272 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2735 transitions. [2023-01-28 04:00:49,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2735 transitions. [2023-01-28 04:00:49,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:49,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2735 transitions. [2023-01-28 04:00:49,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.91666666666666) internal successors, (2735), 12 states have internal predecessors, (2735), 0 states have call successors, (0), 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 04:00:49,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:00:49,280 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:00:49,280 INFO L175 Difference]: Start difference. First operand has 262 places, 482 transitions, 7549 flow. Second operand 12 states and 2735 transitions. [2023-01-28 04:00:49,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 516 transitions, 9021 flow [2023-01-28 04:00:49,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 516 transitions, 8680 flow, removed 114 selfloop flow, removed 7 redundant places. [2023-01-28 04:00:49,657 INFO L231 Difference]: Finished difference. Result has 268 places, 488 transitions, 7678 flow [2023-01-28 04:00:49,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=7208, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7678, PETRI_PLACES=268, PETRI_TRANSITIONS=488} [2023-01-28 04:00:49,657 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 236 predicate places. [2023-01-28 04:00:49,658 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 488 transitions, 7678 flow [2023-01-28 04:00:49,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 223.3448275862069) internal successors, (6477), 29 states have internal predecessors, (6477), 0 states have call successors, (0), 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 04:00:49,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:49,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:49,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-28 04:00:49,867 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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 04:00:49,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash -989489866, now seen corresponding path program 28 times [2023-01-28 04:00:49,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778768864] [2023-01-28 04:00:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:49,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:50,866 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 04:00:50,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:50,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778768864] [2023-01-28 04:00:50,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778768864] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941046713] [2023-01-28 04:00:50,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:00:50,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:50,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:50,868 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:50,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 04:00:51,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:00:51,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:51,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 04:00:51,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:51,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:00:51,119 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:00:51,119 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 11 treesize of output 11 [2023-01-28 04:00:51,344 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:00:51,345 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 36 treesize of output 38 [2023-01-28 04:00:51,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:51,464 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 102 treesize of output 106 [2023-01-28 04:00:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:51,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:54,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:54,615 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 90 treesize of output 134 [2023-01-28 04:00:54,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:00:54,919 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:00:54,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 38 [2023-01-28 04:00:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941046713] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:55,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:55,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 27 [2023-01-28 04:00:55,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890738350] [2023-01-28 04:00:55,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:55,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:00:55,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:00:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-01-28 04:00:55,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 682 [2023-01-28 04:00:55,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 488 transitions, 7678 flow. Second operand has 29 states, 29 states have (on average 204.13793103448276) internal successors, (5920), 29 states have internal predecessors, (5920), 0 states have call successors, (0), 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 04:00:55,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:55,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 682 [2023-01-28 04:00:55,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:57,134 INFO L130 PetriNetUnfolder]: 4562/6670 cut-off events. [2023-01-28 04:00:57,134 INFO L131 PetriNetUnfolder]: For 98026/98026 co-relation queries the response was YES. [2023-01-28 04:00:57,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45418 conditions, 6670 events. 4562/6670 cut-off events. For 98026/98026 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 34286 event pairs, 1538 based on Foata normal form. 1/6671 useless extension candidates. Maximal degree in co-relation 44750. Up to 6410 conditions per place. [2023-01-28 04:00:57,206 INFO L137 encePairwiseOnDemand]: 670/682 looper letters, 430 selfloop transitions, 98 changer transitions 1/529 dead transitions. [2023-01-28 04:00:57,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 529 transitions, 9292 flow [2023-01-28 04:00:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:00:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:00:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2714 transitions. [2023-01-28 04:00:57,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30611324159711256 [2023-01-28 04:00:57,209 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2714 transitions. [2023-01-28 04:00:57,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2714 transitions. [2023-01-28 04:00:57,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:57,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2714 transitions. [2023-01-28 04:00:57,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 208.76923076923077) internal successors, (2714), 13 states have internal predecessors, (2714), 0 states have call successors, (0), 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 04:00:57,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:00:57,215 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:00:57,215 INFO L175 Difference]: Start difference. First operand has 268 places, 488 transitions, 7678 flow. Second operand 13 states and 2714 transitions. [2023-01-28 04:00:57,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 529 transitions, 9292 flow [2023-01-28 04:00:57,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 529 transitions, 8942 flow, removed 118 selfloop flow, removed 8 redundant places. [2023-01-28 04:00:57,569 INFO L231 Difference]: Finished difference. Result has 275 places, 497 transitions, 7899 flow [2023-01-28 04:00:57,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7899, PETRI_PLACES=275, PETRI_TRANSITIONS=497} [2023-01-28 04:00:57,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2023-01-28 04:00:57,570 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 497 transitions, 7899 flow [2023-01-28 04:00:57,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 204.13793103448276) internal successors, (5920), 29 states have internal predecessors, (5920), 0 states have call successors, (0), 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 04:00:57,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:57,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:57,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-01-28 04:00:57,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:57,771 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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 04:00:57,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash -789300812, now seen corresponding path program 29 times [2023-01-28 04:00:57,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:57,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762706444] [2023-01-28 04:00:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:57,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:58,907 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 04:00:58,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762706444] [2023-01-28 04:00:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762706444] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898507010] [2023-01-28 04:00:58,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:00:58,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:58,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:58,909 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:58,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 04:00:59,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:00:59,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:59,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:00:59,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:59,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:59,456 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 35 treesize of output 23 [2023-01-28 04:00:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:59,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:59,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:00:59,610 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 42 treesize of output 95 [2023-01-28 04:00:59,752 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:00:59,752 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 42 treesize of output 38 [2023-01-28 04:00:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898507010] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:59,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 6] total 27 [2023-01-28 04:00:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699229160] [2023-01-28 04:00:59,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:00:59,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:00:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2023-01-28 04:00:59,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 682 [2023-01-28 04:00:59,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 497 transitions, 7899 flow. Second operand has 29 states, 29 states have (on average 192.55172413793105) internal successors, (5584), 29 states have internal predecessors, (5584), 0 states have call successors, (0), 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 04:00:59,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:59,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 682 [2023-01-28 04:00:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:02,176 INFO L130 PetriNetUnfolder]: 4652/6803 cut-off events. [2023-01-28 04:01:02,176 INFO L131 PetriNetUnfolder]: For 100199/100199 co-relation queries the response was YES. [2023-01-28 04:01:02,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46254 conditions, 6803 events. 4652/6803 cut-off events. For 100199/100199 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35130 event pairs, 1577 based on Foata normal form. 1/6804 useless extension candidates. Maximal degree in co-relation 45582. Up to 6539 conditions per place. [2023-01-28 04:01:02,253 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 465 selfloop transitions, 96 changer transitions 1/562 dead transitions. [2023-01-28 04:01:02,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 562 transitions, 9649 flow [2023-01-28 04:01:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:01:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:01:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3168 transitions. [2023-01-28 04:01:02,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2023-01-28 04:01:02,256 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3168 transitions. [2023-01-28 04:01:02,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3168 transitions. [2023-01-28 04:01:02,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:02,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3168 transitions. [2023-01-28 04:01:02,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 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 04:01:02,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 682.0) internal successors, (11594), 17 states have internal predecessors, (11594), 0 states have call successors, (0), 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 04:01:02,263 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 682.0) internal successors, (11594), 17 states have internal predecessors, (11594), 0 states have call successors, (0), 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 04:01:02,263 INFO L175 Difference]: Start difference. First operand has 275 places, 497 transitions, 7899 flow. Second operand 16 states and 3168 transitions. [2023-01-28 04:01:02,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 562 transitions, 9649 flow [2023-01-28 04:01:02,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 562 transitions, 9290 flow, removed 123 selfloop flow, removed 8 redundant places. [2023-01-28 04:01:02,565 INFO L231 Difference]: Finished difference. Result has 284 places, 503 transitions, 7941 flow [2023-01-28 04:01:02,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=7542, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7941, PETRI_PLACES=284, PETRI_TRANSITIONS=503} [2023-01-28 04:01:02,566 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2023-01-28 04:01:02,566 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 503 transitions, 7941 flow [2023-01-28 04:01:02,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 192.55172413793105) internal successors, (5584), 29 states have internal predecessors, (5584), 0 states have call successors, (0), 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 04:01:02,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:02,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:02,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:02,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:02,768 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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 04:01:02,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1005614046, now seen corresponding path program 30 times [2023-01-28 04:01:02,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:02,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718955199] [2023-01-28 04:01:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:02,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:01:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:03,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718955199] [2023-01-28 04:01:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718955199] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:03,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115608261] [2023-01-28 04:01:03,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:01:03,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:03,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:03,789 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:03,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 04:01:03,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:01:03,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:03,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2023-01-28 04:01:03,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:04,038 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:01:04,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:01:04,086 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 04:01:04,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2023-01-28 04:01:04,141 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 04:01:04,142 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 04:01:04,322 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:01:04,323 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 21 treesize of output 24 [2023-01-28 04:01:04,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:04,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-01-28 04:01:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:04,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:04,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:04,680 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 171 treesize of output 191 [2023-01-28 04:01:05,548 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:05,549 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:05,593 INFO L321 Elim1Store]: treesize reduction 26, result has 66.2 percent of original size [2023-01-28 04:01:05,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 61 [2023-01-28 04:01:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:06,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115608261] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:06,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:06,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 29 [2023-01-28 04:01:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18115117] [2023-01-28 04:01:06,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:06,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:01:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:01:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-01-28 04:01:06,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 682 [2023-01-28 04:01:06,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 503 transitions, 7941 flow. Second operand has 31 states, 31 states have (on average 204.06451612903226) internal successors, (6326), 31 states have internal predecessors, (6326), 0 states have call successors, (0), 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 04:01:06,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:06,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 682 [2023-01-28 04:01:06,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:08,049 INFO L130 PetriNetUnfolder]: 4770/6974 cut-off events. [2023-01-28 04:01:08,050 INFO L131 PetriNetUnfolder]: For 108164/108164 co-relation queries the response was YES. [2023-01-28 04:01:08,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47629 conditions, 6974 events. 4770/6974 cut-off events. For 108164/108164 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36196 event pairs, 1609 based on Foata normal form. 1/6975 useless extension candidates. Maximal degree in co-relation 46954. Up to 6690 conditions per place. [2023-01-28 04:01:08,116 INFO L137 encePairwiseOnDemand]: 670/682 looper letters, 441 selfloop transitions, 103 changer transitions 1/545 dead transitions. [2023-01-28 04:01:08,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 545 transitions, 9669 flow [2023-01-28 04:01:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:01:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:01:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2712 transitions. [2023-01-28 04:01:08,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3058876607263704 [2023-01-28 04:01:08,118 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2712 transitions. [2023-01-28 04:01:08,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2712 transitions. [2023-01-28 04:01:08,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:08,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2712 transitions. [2023-01-28 04:01:08,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 208.6153846153846) internal successors, (2712), 13 states have internal predecessors, (2712), 0 states have call successors, (0), 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 04:01:08,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:01:08,123 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:01:08,123 INFO L175 Difference]: Start difference. First operand has 284 places, 503 transitions, 7941 flow. Second operand 13 states and 2712 transitions. [2023-01-28 04:01:08,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 545 transitions, 9669 flow [2023-01-28 04:01:08,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 545 transitions, 9369 flow, removed 77 selfloop flow, removed 10 redundant places. [2023-01-28 04:01:08,459 INFO L231 Difference]: Finished difference. Result has 288 places, 516 transitions, 8344 flow [2023-01-28 04:01:08,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=7641, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8344, PETRI_PLACES=288, PETRI_TRANSITIONS=516} [2023-01-28 04:01:08,460 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2023-01-28 04:01:08,460 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 516 transitions, 8344 flow [2023-01-28 04:01:08,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 204.06451612903226) internal successors, (6326), 31 states have internal predecessors, (6326), 0 states have call successors, (0), 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 04:01:08,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:08,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:08,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:08,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-01-28 04:01:08,662 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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 04:01:08,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1507910754, now seen corresponding path program 31 times [2023-01-28 04:01:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:08,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504857069] [2023-01-28 04:01:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:01:09,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504857069] [2023-01-28 04:01:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504857069] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381315466] [2023-01-28 04:01:09,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:01:09,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:09,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:09,551 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:09,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-28 04:01:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 04:01:09,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:09,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:01:09,805 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:01:09,805 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 11 treesize of output 11 [2023-01-28 04:01:09,980 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:01:09,981 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 36 treesize of output 38 [2023-01-28 04:01:10,170 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:10,170 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 102 treesize of output 106 [2023-01-28 04:01:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:10,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:13,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:13,172 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 78 treesize of output 118 [2023-01-28 04:01:13,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381315466] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:13,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:13,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 27 [2023-01-28 04:01:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773234968] [2023-01-28 04:01:13,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:01:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:01:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=698, Unknown=1, NotChecked=0, Total=812 [2023-01-28 04:01:13,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 682 [2023-01-28 04:01:13,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 516 transitions, 8344 flow. Second operand has 29 states, 29 states have (on average 194.13793103448276) internal successors, (5630), 29 states have internal predecessors, (5630), 0 states have call successors, (0), 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 04:01:13,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:13,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 682 [2023-01-28 04:01:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:16,409 INFO L130 PetriNetUnfolder]: 5125/7492 cut-off events. [2023-01-28 04:01:16,409 INFO L131 PetriNetUnfolder]: For 128555/128555 co-relation queries the response was YES. [2023-01-28 04:01:16,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54533 conditions, 7492 events. 5125/7492 cut-off events. For 128555/128555 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 39158 event pairs, 1632 based on Foata normal form. 1/7493 useless extension candidates. Maximal degree in co-relation 53856. Up to 6926 conditions per place. [2023-01-28 04:01:16,496 INFO L137 encePairwiseOnDemand]: 668/682 looper letters, 498 selfloop transitions, 210 changer transitions 1/709 dead transitions. [2023-01-28 04:01:16,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 709 transitions, 13405 flow [2023-01-28 04:01:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 04:01:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 04:01:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5368 transitions. [2023-01-28 04:01:16,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2915173237753883 [2023-01-28 04:01:16,501 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5368 transitions. [2023-01-28 04:01:16,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5368 transitions. [2023-01-28 04:01:16,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:16,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5368 transitions. [2023-01-28 04:01:16,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 198.8148148148148) internal successors, (5368), 27 states have internal predecessors, (5368), 0 states have call successors, (0), 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 04:01:16,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 682.0) internal successors, (19096), 28 states have internal predecessors, (19096), 0 states have call successors, (0), 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 04:01:16,513 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 682.0) internal successors, (19096), 28 states have internal predecessors, (19096), 0 states have call successors, (0), 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 04:01:16,513 INFO L175 Difference]: Start difference. First operand has 288 places, 516 transitions, 8344 flow. Second operand 27 states and 5368 transitions. [2023-01-28 04:01:16,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 709 transitions, 13405 flow [2023-01-28 04:01:16,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 709 transitions, 12868 flow, removed 208 selfloop flow, removed 6 redundant places. [2023-01-28 04:01:16,934 INFO L231 Difference]: Finished difference. Result has 314 places, 618 transitions, 11219 flow [2023-01-28 04:01:16,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=7867, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=11219, PETRI_PLACES=314, PETRI_TRANSITIONS=618} [2023-01-28 04:01:16,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2023-01-28 04:01:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 618 transitions, 11219 flow [2023-01-28 04:01:16,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 194.13793103448276) internal successors, (5630), 29 states have internal predecessors, (5630), 0 states have call successors, (0), 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 04:01:16,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:16,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:16,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 04:01:17,136 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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 04:01:17,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 969360588, now seen corresponding path program 32 times [2023-01-28 04:01:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615590636] [2023-01-28 04:01:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:01:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615590636] [2023-01-28 04:01:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615590636] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794818772] [2023-01-28 04:01:17,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:01:17,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:17,907 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:17,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-28 04:01:18,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:01:18,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:18,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2023-01-28 04:01:18,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:18,127 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:01:18,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:01:18,171 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 04:01:18,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2023-01-28 04:01:18,218 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 04:01:18,219 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 04:01:18,356 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:01:18,357 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 21 treesize of output 24 [2023-01-28 04:01:18,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:18,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-01-28 04:01:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:18,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:18,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:18,688 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 171 treesize of output 191 [2023-01-28 04:01:19,741 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:19,742 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:19,790 INFO L321 Elim1Store]: treesize reduction 26, result has 66.2 percent of original size [2023-01-28 04:01:19,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 61 [2023-01-28 04:01:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794818772] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:20,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:20,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2023-01-28 04:01:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856921496] [2023-01-28 04:01:20,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:20,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:01:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:01:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-01-28 04:01:20,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 682 [2023-01-28 04:01:20,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 618 transitions, 11219 flow. Second operand has 28 states, 28 states have (on average 199.14285714285714) internal successors, (5576), 28 states have internal predecessors, (5576), 0 states have call successors, (0), 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 04:01:20,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:20,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 682 [2023-01-28 04:01:20,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:22,492 INFO L130 PetriNetUnfolder]: 5480/8009 cut-off events. [2023-01-28 04:01:22,492 INFO L131 PetriNetUnfolder]: For 149951/149951 co-relation queries the response was YES. [2023-01-28 04:01:22,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61688 conditions, 8009 events. 5480/8009 cut-off events. For 149951/149951 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 42138 event pairs, 1698 based on Foata normal form. 1/8010 useless extension candidates. Maximal degree in co-relation 61004. Up to 7300 conditions per place. [2023-01-28 04:01:22,579 INFO L137 encePairwiseOnDemand]: 668/682 looper letters, 471 selfloop transitions, 294 changer transitions 1/766 dead transitions. [2023-01-28 04:01:22,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 766 transitions, 16199 flow [2023-01-28 04:01:22,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:01:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:01:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4261 transitions. [2023-01-28 04:01:22,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2975143136433459 [2023-01-28 04:01:22,582 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4261 transitions. [2023-01-28 04:01:22,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4261 transitions. [2023-01-28 04:01:22,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:22,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4261 transitions. [2023-01-28 04:01:22,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 202.9047619047619) internal successors, (4261), 21 states have internal predecessors, (4261), 0 states have call successors, (0), 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 04:01:22,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 682.0) internal successors, (15004), 22 states have internal predecessors, (15004), 0 states have call successors, (0), 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 04:01:22,590 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 682.0) internal successors, (15004), 22 states have internal predecessors, (15004), 0 states have call successors, (0), 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 04:01:22,590 INFO L175 Difference]: Start difference. First operand has 314 places, 618 transitions, 11219 flow. Second operand 21 states and 4261 transitions. [2023-01-28 04:01:22,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 766 transitions, 16199 flow [2023-01-28 04:01:23,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 766 transitions, 15381 flow, removed 207 selfloop flow, removed 6 redundant places. [2023-01-28 04:01:23,135 INFO L231 Difference]: Finished difference. Result has 332 places, 715 transitions, 14089 flow [2023-01-28 04:01:23,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=10534, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14089, PETRI_PLACES=332, PETRI_TRANSITIONS=715} [2023-01-28 04:01:23,135 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2023-01-28 04:01:23,135 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 715 transitions, 14089 flow [2023-01-28 04:01:23,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 199.14285714285714) internal successors, (5576), 28 states have internal predecessors, (5576), 0 states have call successors, (0), 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 04:01:23,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:23,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:23,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:23,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-01-28 04:01:23,337 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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 04:01:23,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1329023202, now seen corresponding path program 33 times [2023-01-28 04:01:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017154409] [2023-01-28 04:01:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:23,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:01:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017154409] [2023-01-28 04:01:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017154409] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135818939] [2023-01-28 04:01:24,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:01:24,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:24,211 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:24,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-28 04:01:24,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 04:01:24,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:24,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 93 conjunts are in the unsatisfiable core [2023-01-28 04:01:24,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:24,484 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:01:24,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:01:24,532 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:01:24,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 04:01:24,589 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-28 04:01:24,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:01:24,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-01-28 04:01:25,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-01-28 04:01:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:25,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:25,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:25,210 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 171 treesize of output 191 [2023-01-28 04:01:26,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:26,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:26,242 INFO L321 Elim1Store]: treesize reduction 26, result has 66.2 percent of original size [2023-01-28 04:01:26,242 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 38 treesize of output 61 [2023-01-28 04:01:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135818939] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:26,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:26,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2023-01-28 04:01:26,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084585152] [2023-01-28 04:01:26,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:26,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 04:01:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 04:01:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2023-01-28 04:01:26,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 682 [2023-01-28 04:01:26,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 715 transitions, 14089 flow. Second operand has 32 states, 32 states have (on average 199.125) internal successors, (6372), 32 states have internal predecessors, (6372), 0 states have call successors, (0), 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 04:01:26,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:26,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 682 [2023-01-28 04:01:26,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:29,470 INFO L130 PetriNetUnfolder]: 5560/8126 cut-off events. [2023-01-28 04:01:29,470 INFO L131 PetriNetUnfolder]: For 149311/149311 co-relation queries the response was YES. [2023-01-28 04:01:29,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62298 conditions, 8126 events. 5560/8126 cut-off events. For 149311/149311 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 42960 event pairs, 1779 based on Foata normal form. 1/8127 useless extension candidates. Maximal degree in co-relation 61609. Up to 7523 conditions per place. [2023-01-28 04:01:29,559 INFO L137 encePairwiseOnDemand]: 668/682 looper letters, 481 selfloop transitions, 285 changer transitions 1/767 dead transitions. [2023-01-28 04:01:29,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 767 transitions, 16305 flow [2023-01-28 04:01:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:01:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:01:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4255 transitions. [2023-01-28 04:01:29,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.297095377740539 [2023-01-28 04:01:29,563 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4255 transitions. [2023-01-28 04:01:29,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4255 transitions. [2023-01-28 04:01:29,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:29,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4255 transitions. [2023-01-28 04:01:29,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 202.61904761904762) internal successors, (4255), 21 states have internal predecessors, (4255), 0 states have call successors, (0), 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 04:01:29,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 682.0) internal successors, (15004), 22 states have internal predecessors, (15004), 0 states have call successors, (0), 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 04:01:29,572 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 682.0) internal successors, (15004), 22 states have internal predecessors, (15004), 0 states have call successors, (0), 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 04:01:29,572 INFO L175 Difference]: Start difference. First operand has 332 places, 715 transitions, 14089 flow. Second operand 21 states and 4255 transitions. [2023-01-28 04:01:29,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 767 transitions, 16305 flow [2023-01-28 04:01:30,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 767 transitions, 15817 flow, removed 212 selfloop flow, removed 8 redundant places. [2023-01-28 04:01:30,219 INFO L231 Difference]: Finished difference. Result has 346 places, 721 transitions, 14509 flow [2023-01-28 04:01:30,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=13601, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14509, PETRI_PLACES=346, PETRI_TRANSITIONS=721} [2023-01-28 04:01:30,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2023-01-28 04:01:30,220 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 721 transitions, 14509 flow [2023-01-28 04:01:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 199.125) internal successors, (6372), 32 states have internal predecessors, (6372), 0 states have call successors, (0), 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 04:01:30,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:30,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:30,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-01-28 04:01:30,427 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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 04:01:30,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1473552728, now seen corresponding path program 34 times [2023-01-28 04:01:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529951034] [2023-01-28 04:01:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:31,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:31,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529951034] [2023-01-28 04:01:31,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529951034] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:31,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437959633] [2023-01-28 04:01:31,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:01:31,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:31,020 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:31,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-28 04:01:31,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:01:31,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:31,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 93 conjunts are in the unsatisfiable core [2023-01-28 04:01:31,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:31,233 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:01:31,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:01:31,263 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:01:31,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 04:01:31,331 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-28 04:01:31,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:01:31,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-01-28 04:01:31,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-01-28 04:01:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:31,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:31,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:31,884 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 195 treesize of output 215 [2023-01-28 04:01:32,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:32,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:32,650 INFO L321 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-01-28 04:01:32,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 65 [2023-01-28 04:01:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:33,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437959633] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:33,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:33,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-01-28 04:01:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320194355] [2023-01-28 04:01:33,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:33,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:01:33,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:33,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:01:33,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-01-28 04:01:33,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 04:01:33,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 721 transitions, 14509 flow. Second operand has 29 states, 29 states have (on average 223.27586206896552) internal successors, (6475), 29 states have internal predecessors, (6475), 0 states have call successors, (0), 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 04:01:33,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:33,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 04:01:33,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:35,278 INFO L130 PetriNetUnfolder]: 5650/8257 cut-off events. [2023-01-28 04:01:35,278 INFO L131 PetriNetUnfolder]: For 148722/148722 co-relation queries the response was YES. [2023-01-28 04:01:35,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63018 conditions, 8257 events. 5650/8257 cut-off events. For 148722/148722 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43717 event pairs, 1821 based on Foata normal form. 1/8258 useless extension candidates. Maximal degree in co-relation 62326. Up to 7706 conditions per place. [2023-01-28 04:01:35,392 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 485 selfloop transitions, 270 changer transitions 1/756 dead transitions. [2023-01-28 04:01:35,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 756 transitions, 16545 flow [2023-01-28 04:01:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:01:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:01:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2733 transitions. [2023-01-28 04:01:35,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33394428152492667 [2023-01-28 04:01:35,394 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2733 transitions. [2023-01-28 04:01:35,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2733 transitions. [2023-01-28 04:01:35,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:35,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2733 transitions. [2023-01-28 04:01:35,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.75) internal successors, (2733), 12 states have internal predecessors, (2733), 0 states have call successors, (0), 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 04:01:35,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:01:35,400 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:01:35,400 INFO L175 Difference]: Start difference. First operand has 346 places, 721 transitions, 14509 flow. Second operand 12 states and 2733 transitions. [2023-01-28 04:01:35,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 756 transitions, 16545 flow [2023-01-28 04:01:36,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 756 transitions, 16014 flow, removed 149 selfloop flow, removed 15 redundant places. [2023-01-28 04:01:36,019 INFO L231 Difference]: Finished difference. Result has 345 places, 730 transitions, 14918 flow [2023-01-28 04:01:36,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=13981, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14918, PETRI_PLACES=345, PETRI_TRANSITIONS=730} [2023-01-28 04:01:36,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2023-01-28 04:01:36,020 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 730 transitions, 14918 flow [2023-01-28 04:01:36,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 223.27586206896552) internal successors, (6475), 29 states have internal predecessors, (6475), 0 states have call successors, (0), 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 04:01:36,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:36,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:36,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:36,227 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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 04:01:36,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2008673002, now seen corresponding path program 35 times [2023-01-28 04:01:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385849900] [2023-01-28 04:01:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:01:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385849900] [2023-01-28 04:01:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385849900] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:37,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461075998] [2023-01-28 04:01:37,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:01:37,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:37,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:37,488 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:37,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-28 04:01:37,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:01:37,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:37,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 85 conjunts are in the unsatisfiable core [2023-01-28 04:01:37,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:37,717 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:01:37,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:01:37,762 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 04:01:37,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2023-01-28 04:01:37,811 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:01:37,811 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 11 treesize of output 11 [2023-01-28 04:01:38,079 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-01-28 04:01:38,079 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 29 treesize of output 35 [2023-01-28 04:01:38,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-01-28 04:01:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:38,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:38,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:38,346 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 90 treesize of output 134 [2023-01-28 04:01:38,446 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:38,467 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:01:38,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 38 [2023-01-28 04:01:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:38,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461075998] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:38,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:38,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 32 [2023-01-28 04:01:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597029192] [2023-01-28 04:01:38,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:38,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:01:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:38,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:01:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 04:01:38,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 682 [2023-01-28 04:01:38,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 730 transitions, 14918 flow. Second operand has 34 states, 34 states have (on average 195.0) internal successors, (6630), 34 states have internal predecessors, (6630), 0 states have call successors, (0), 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 04:01:38,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:38,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 682 [2023-01-28 04:01:38,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:41,648 INFO L130 PetriNetUnfolder]: 5740/8388 cut-off events. [2023-01-28 04:01:41,648 INFO L131 PetriNetUnfolder]: For 154558/154558 co-relation queries the response was YES. [2023-01-28 04:01:41,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64417 conditions, 8388 events. 5740/8388 cut-off events. For 154558/154558 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 44665 event pairs, 1856 based on Foata normal form. 1/8389 useless extension candidates. Maximal degree in co-relation 63721. Up to 7829 conditions per place. [2023-01-28 04:01:41,746 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 515 selfloop transitions, 271 changer transitions 1/787 dead transitions. [2023-01-28 04:01:41,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 787 transitions, 17201 flow [2023-01-28 04:01:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:01:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:01:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3790 transitions. [2023-01-28 04:01:41,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29248340793332306 [2023-01-28 04:01:41,749 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3790 transitions. [2023-01-28 04:01:41,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3790 transitions. [2023-01-28 04:01:41,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:41,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3790 transitions. [2023-01-28 04:01:41,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 199.47368421052633) internal successors, (3790), 19 states have internal predecessors, (3790), 0 states have call successors, (0), 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 04:01:41,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 682.0) internal successors, (13640), 20 states have internal predecessors, (13640), 0 states have call successors, (0), 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 04:01:41,759 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 682.0) internal successors, (13640), 20 states have internal predecessors, (13640), 0 states have call successors, (0), 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 04:01:41,759 INFO L175 Difference]: Start difference. First operand has 345 places, 730 transitions, 14918 flow. Second operand 19 states and 3790 transitions. [2023-01-28 04:01:41,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 787 transitions, 17201 flow [2023-01-28 04:01:42,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 787 transitions, 16648 flow, removed 159 selfloop flow, removed 5 redundant places. [2023-01-28 04:01:42,602 INFO L231 Difference]: Finished difference. Result has 360 places, 739 transitions, 15302 flow [2023-01-28 04:01:42,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=14365, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=15302, PETRI_PLACES=360, PETRI_TRANSITIONS=739} [2023-01-28 04:01:42,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2023-01-28 04:01:42,603 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 739 transitions, 15302 flow [2023-01-28 04:01:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 195.0) internal successors, (6630), 34 states have internal predecessors, (6630), 0 states have call successors, (0), 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 04:01:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:42,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:42,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:42,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-01-28 04:01:42,811 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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 04:01:42,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1248228834, now seen corresponding path program 36 times [2023-01-28 04:01:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:42,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479836539] [2023-01-28 04:01:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:42,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479836539] [2023-01-28 04:01:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479836539] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374921419] [2023-01-28 04:01:43,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:01:43,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:43,447 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:43,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-28 04:01:43,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:01:43,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2023-01-28 04:01:43,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:43,693 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:01:43,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:01:43,722 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 04:01:43,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2023-01-28 04:01:43,752 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 04:01:43,752 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 04:01:43,908 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:01:43,908 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 21 treesize of output 24 [2023-01-28 04:01:44,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:44,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-01-28 04:01:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:44,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:44,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:44,190 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 195 treesize of output 215 [2023-01-28 04:01:45,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:45,058 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:45,107 INFO L321 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-01-28 04:01:45,107 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 42 treesize of output 65 [2023-01-28 04:01:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374921419] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:45,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-01-28 04:01:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261982344] [2023-01-28 04:01:45,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:01:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:01:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:01:45,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 04:01:45,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 739 transitions, 15302 flow. Second operand has 23 states, 23 states have (on average 223.52173913043478) internal successors, (5141), 23 states have internal predecessors, (5141), 0 states have call successors, (0), 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 04:01:45,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:45,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 04:01:45,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:47,932 INFO L130 PetriNetUnfolder]: 5828/8517 cut-off events. [2023-01-28 04:01:47,932 INFO L131 PetriNetUnfolder]: For 158040/158040 co-relation queries the response was YES. [2023-01-28 04:01:48,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65497 conditions, 8517 events. 5828/8517 cut-off events. For 158040/158040 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 45465 event pairs, 1886 based on Foata normal form. 1/8518 useless extension candidates. Maximal degree in co-relation 64798. Up to 7956 conditions per place. [2023-01-28 04:01:48,053 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 502 selfloop transitions, 270 changer transitions 1/773 dead transitions. [2023-01-28 04:01:48,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 773 transitions, 17251 flow [2023-01-28 04:01:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:01:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:01:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2735 transitions. [2023-01-28 04:01:48,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334188660801564 [2023-01-28 04:01:48,055 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2735 transitions. [2023-01-28 04:01:48,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2735 transitions. [2023-01-28 04:01:48,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:48,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2735 transitions. [2023-01-28 04:01:48,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.91666666666666) internal successors, (2735), 12 states have internal predecessors, (2735), 0 states have call successors, (0), 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 04:01:48,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:01:48,061 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:01:48,061 INFO L175 Difference]: Start difference. First operand has 360 places, 739 transitions, 15302 flow. Second operand 12 states and 2735 transitions. [2023-01-28 04:01:48,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 773 transitions, 17251 flow [2023-01-28 04:01:48,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 773 transitions, 16474 flow, removed 161 selfloop flow, removed 16 redundant places. [2023-01-28 04:01:48,789 INFO L231 Difference]: Finished difference. Result has 357 places, 745 transitions, 15320 flow [2023-01-28 04:01:48,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=14525, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15320, PETRI_PLACES=357, PETRI_TRANSITIONS=745} [2023-01-28 04:01:48,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 325 predicate places. [2023-01-28 04:01:48,791 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 745 transitions, 15320 flow [2023-01-28 04:01:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 223.52173913043478) internal successors, (5141), 23 states have internal predecessors, (5141), 0 states have call successors, (0), 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 04:01:48,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:48,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:48,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:48,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-01-28 04:01:48,998 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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 04:01:48,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1466756076, now seen corresponding path program 37 times [2023-01-28 04:01:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554719949] [2023-01-28 04:01:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:49,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554719949] [2023-01-28 04:01:49,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554719949] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833070278] [2023-01-28 04:01:49,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:01:49,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:49,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:49,567 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:49,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-28 04:01:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:49,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 04:01:49,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:49,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:01:49,800 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:01:49,800 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 11 treesize of output 11 [2023-01-28 04:01:49,996 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:01:49,996 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 36 treesize of output 38 [2023-01-28 04:01:50,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:50,167 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 102 treesize of output 106 [2023-01-28 04:01:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:50,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:51,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:51,658 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 90 treesize of output 134 [2023-01-28 04:01:51,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:01:51,837 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:01:51,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 38 [2023-01-28 04:01:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:52,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833070278] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:52,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2023-01-28 04:01:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509842214] [2023-01-28 04:01:52,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:52,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:01:52,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:52,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:01:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:01:52,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 04:01:52,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 745 transitions, 15320 flow. Second operand has 21 states, 21 states have (on average 223.61904761904762) internal successors, (4696), 21 states have internal predecessors, (4696), 0 states have call successors, (0), 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 04:01:52,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:52,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 04:01:52,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:54,280 INFO L130 PetriNetUnfolder]: 5916/8646 cut-off events. [2023-01-28 04:01:54,280 INFO L131 PetriNetUnfolder]: For 161822/161822 co-relation queries the response was YES. [2023-01-28 04:01:54,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66437 conditions, 8646 events. 5916/8646 cut-off events. For 161822/161822 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 46277 event pairs, 1925 based on Foata normal form. 1/8647 useless extension candidates. Maximal degree in co-relation 65735. Up to 8081 conditions per place. [2023-01-28 04:01:54,385 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 510 selfloop transitions, 270 changer transitions 1/781 dead transitions. [2023-01-28 04:01:54,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 781 transitions, 17300 flow [2023-01-28 04:01:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:01:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:01:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2516 transitions. [2023-01-28 04:01:54,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33537723273793657 [2023-01-28 04:01:54,387 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2516 transitions. [2023-01-28 04:01:54,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2516 transitions. [2023-01-28 04:01:54,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:54,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2516 transitions. [2023-01-28 04:01:54,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 228.72727272727272) internal successors, (2516), 11 states have internal predecessors, (2516), 0 states have call successors, (0), 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 04:01:54,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 04:01:54,393 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 04:01:54,393 INFO L175 Difference]: Start difference. First operand has 357 places, 745 transitions, 15320 flow. Second operand 11 states and 2516 transitions. [2023-01-28 04:01:54,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 781 transitions, 17300 flow [2023-01-28 04:01:54,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 781 transitions, 16566 flow, removed 101 selfloop flow, removed 9 redundant places. [2023-01-28 04:01:54,992 INFO L231 Difference]: Finished difference. Result has 360 places, 751 transitions, 15381 flow [2023-01-28 04:01:54,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=14586, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15381, PETRI_PLACES=360, PETRI_TRANSITIONS=751} [2023-01-28 04:01:54,992 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2023-01-28 04:01:54,992 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 751 transitions, 15381 flow [2023-01-28 04:01:54,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 223.61904761904762) internal successors, (4696), 21 states have internal predecessors, (4696), 0 states have call successors, (0), 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 04:01:54,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:54,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:54,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:55,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-01-28 04:01:55,194 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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 04:01:55,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash 799498386, now seen corresponding path program 38 times [2023-01-28 04:01:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:55,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421824894] [2023-01-28 04:01:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:55,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:01:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:01:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421824894] [2023-01-28 04:01:55,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421824894] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:01:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724604738] [2023-01-28 04:01:55,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:01:55,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:01:55,718 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:01:55,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-28 04:01:55,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:01:55,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:01:55,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:01:55,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:01:56,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:56,132 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 35 treesize of output 23 [2023-01-28 04:01:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:56,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:01:56,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:01:56,251 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 42 treesize of output 95 [2023-01-28 04:01:56,439 INFO L321 Elim1Store]: treesize reduction 57, result has 32.9 percent of original size [2023-01-28 04:01:56,439 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 42 treesize of output 38 [2023-01-28 04:01:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:01:56,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724604738] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:01:56,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:01:56,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2023-01-28 04:01:56,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167712401] [2023-01-28 04:01:56,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:01:56,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:01:56,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:01:56,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:01:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:01:56,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 682 [2023-01-28 04:01:56,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 751 transitions, 15381 flow. Second operand has 17 states, 17 states have (on average 238.35294117647058) internal successors, (4052), 17 states have internal predecessors, (4052), 0 states have call successors, (0), 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 04:01:56,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:01:56,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 682 [2023-01-28 04:01:56,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:01:58,593 INFO L130 PetriNetUnfolder]: 6006/8779 cut-off events. [2023-01-28 04:01:58,593 INFO L131 PetriNetUnfolder]: For 168266/168266 co-relation queries the response was YES. [2023-01-28 04:01:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67232 conditions, 8779 events. 6006/8779 cut-off events. For 168266/168266 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 47330 event pairs, 1957 based on Foata normal form. 1/8780 useless extension candidates. Maximal degree in co-relation 66528. Up to 8210 conditions per place. [2023-01-28 04:01:58,702 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 530 selfloop transitions, 258 changer transitions 1/789 dead transitions. [2023-01-28 04:01:58,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 789 transitions, 17396 flow [2023-01-28 04:01:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:01:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:01:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2202 transitions. [2023-01-28 04:01:58,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587487781036168 [2023-01-28 04:01:58,704 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2202 transitions. [2023-01-28 04:01:58,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2202 transitions. [2023-01-28 04:01:58,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:01:58,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2202 transitions. [2023-01-28 04:01:58,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.66666666666666) internal successors, (2202), 9 states have internal predecessors, (2202), 0 states have call successors, (0), 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 04:01:58,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:01:58,710 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:01:58,710 INFO L175 Difference]: Start difference. First operand has 360 places, 751 transitions, 15381 flow. Second operand 9 states and 2202 transitions. [2023-01-28 04:01:58,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 789 transitions, 17396 flow [2023-01-28 04:01:59,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 789 transitions, 16656 flow, removed 104 selfloop flow, removed 8 redundant places. [2023-01-28 04:01:59,502 INFO L231 Difference]: Finished difference. Result has 362 places, 757 transitions, 15424 flow [2023-01-28 04:01:59,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=14641, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15424, PETRI_PLACES=362, PETRI_TRANSITIONS=757} [2023-01-28 04:01:59,502 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2023-01-28 04:01:59,503 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 757 transitions, 15424 flow [2023-01-28 04:01:59,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 238.35294117647058) internal successors, (4052), 17 states have internal predecessors, (4052), 0 states have call successors, (0), 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 04:01:59,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:01:59,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:01:59,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-01-28 04:01:59,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:01:59,704 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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 04:01:59,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:01:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2034914794, now seen corresponding path program 39 times [2023-01-28 04:01:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:01:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950095720] [2023-01-28 04:01:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:01:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:01:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950095720] [2023-01-28 04:02:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950095720] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430981088] [2023-01-28 04:02:00,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:02:00,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:00,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:00,253 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-28 04:02:00,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:02:00,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:00,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 04:02:00,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:00,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:02:00,516 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:02:00,516 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 11 treesize of output 11 [2023-01-28 04:02:00,685 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:02:00,686 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 36 treesize of output 38 [2023-01-28 04:02:00,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:00,892 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 102 treesize of output 106 [2023-01-28 04:02:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:00,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:02,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:02,912 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 78 treesize of output 118 [2023-01-28 04:02:03,141 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430981088] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:03,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2023-01-28 04:02:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564674681] [2023-01-28 04:02:03,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:03,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 04:02:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 04:02:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-01-28 04:02:03,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 682 [2023-01-28 04:02:03,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 757 transitions, 15424 flow. Second operand has 22 states, 22 states have (on average 223.6818181818182) internal successors, (4921), 22 states have internal predecessors, (4921), 0 states have call successors, (0), 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 04:02:03,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:03,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 682 [2023-01-28 04:02:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:02:05,647 INFO L130 PetriNetUnfolder]: 6094/8908 cut-off events. [2023-01-28 04:02:05,647 INFO L131 PetriNetUnfolder]: For 175886/175886 co-relation queries the response was YES. [2023-01-28 04:02:05,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68010 conditions, 8908 events. 6094/8908 cut-off events. For 175886/175886 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 47939 event pairs, 1970 based on Foata normal form. 1/8909 useless extension candidates. Maximal degree in co-relation 67305. Up to 8268 conditions per place. [2023-01-28 04:02:05,770 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 516 selfloop transitions, 283 changer transitions 1/800 dead transitions. [2023-01-28 04:02:05,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 800 transitions, 17500 flow [2023-01-28 04:02:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:02:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:02:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2520 transitions. [2023-01-28 04:02:05,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33591042388696346 [2023-01-28 04:02:05,772 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2520 transitions. [2023-01-28 04:02:05,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2520 transitions. [2023-01-28 04:02:05,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:02:05,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2520 transitions. [2023-01-28 04:02:05,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 229.0909090909091) internal successors, (2520), 11 states have internal predecessors, (2520), 0 states have call successors, (0), 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 04:02:05,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 04:02:05,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 682.0) internal successors, (8184), 12 states have internal predecessors, (8184), 0 states have call successors, (0), 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 04:02:05,777 INFO L175 Difference]: Start difference. First operand has 362 places, 757 transitions, 15424 flow. Second operand 11 states and 2520 transitions. [2023-01-28 04:02:05,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 800 transitions, 17500 flow [2023-01-28 04:02:06,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 800 transitions, 16778 flow, removed 107 selfloop flow, removed 6 redundant places. [2023-01-28 04:02:06,597 INFO L231 Difference]: Finished difference. Result has 368 places, 763 transitions, 15542 flow [2023-01-28 04:02:06,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=14702, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15542, PETRI_PLACES=368, PETRI_TRANSITIONS=763} [2023-01-28 04:02:06,598 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 336 predicate places. [2023-01-28 04:02:06,598 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 763 transitions, 15542 flow [2023-01-28 04:02:06,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 223.6818181818182) internal successors, (4921), 22 states have internal predecessors, (4921), 0 states have call successors, (0), 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 04:02:06,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:06,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:06,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-01-28 04:02:06,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:06,799 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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 04:02:06,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash 517883682, now seen corresponding path program 40 times [2023-01-28 04:02:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:06,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65915811] [2023-01-28 04:02:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:07,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65915811] [2023-01-28 04:02:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65915811] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746200754] [2023-01-28 04:02:07,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:02:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:07,478 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:07,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-28 04:02:07,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:02:07,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:07,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 90 conjunts are in the unsatisfiable core [2023-01-28 04:02:07,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:07,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:02:07,780 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:02:07,780 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 11 treesize of output 11 [2023-01-28 04:02:08,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:08,015 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 14 treesize of output 16 [2023-01-28 04:02:08,126 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:08,147 INFO L321 Elim1Store]: treesize reduction 67, result has 22.1 percent of original size [2023-01-28 04:02:08,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 41 [2023-01-28 04:02:08,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:08,359 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 102 treesize of output 106 [2023-01-28 04:02:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:08,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:09,475 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((~C~0.offset Int) (v_ArrVal_2993 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2993))) (let ((.cse1 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (.cse2 (select (select .cse0 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse0 c_~C~0.base (store (select .cse0 c_~C~0.base) ~C~0.offset (+ .cse1 .cse2))) c_~B~0.base) .cse3)) (+ .cse1 .cse2 c_~csum~0))))) (forall ((~C~0.offset Int) (v_ArrVal_2993 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2993))) (let ((.cse4 (select (select .cse6 c_~A~0.base) c_~A~0.offset)) (.cse5 (select (select .cse6 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse4 .cse5 c_~csum~0) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse6 c_~C~0.base (store (select .cse6 c_~C~0.base) ~C~0.offset (+ .cse4 .cse5))) c_~B~0.base) .cse3)))))))) is different from false [2023-01-28 04:02:09,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:09,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2406 treesize of output 2120 [2023-01-28 04:02:09,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:09,553 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 722 treesize of output 662 [2023-01-28 04:02:14,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:14,371 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 170 treesize of output 166 [2023-01-28 04:02:14,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:14,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:14,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:14,921 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 29 [2023-01-28 04:02:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:14,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:14,931 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 46 [2023-01-28 04:02:14,947 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 12 treesize of output 6 [2023-01-28 04:02:14,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:14,981 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 26 treesize of output 75 [2023-01-28 04:02:15,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,216 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 24 treesize of output 47 [2023-01-28 04:02:15,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,254 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 18 treesize of output 19 [2023-01-28 04:02:15,273 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 14 treesize of output 8 [2023-01-28 04:02:15,313 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:15,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:15,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 33 [2023-01-28 04:02:15,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:15,353 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 25 [2023-01-28 04:02:15,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-01-28 04:02:15,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:15,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 146 [2023-01-28 04:02:15,500 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 14 treesize of output 8 [2023-01-28 04:02:15,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2023-01-28 04:02:15,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:15,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:15,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 113 [2023-01-28 04:02:15,772 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2023-01-28 04:02:15,861 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,866 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,894 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 04:02:15,895 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 26 treesize of output 22 [2023-01-28 04:02:15,908 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,921 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,927 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,934 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,962 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:15,969 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,074 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,081 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,100 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,106 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,149 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,160 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:16,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-01-28 04:02:16,180 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,184 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:16,278 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:16,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:16,329 INFO L321 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size [2023-01-28 04:02:16,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 326 treesize of output 228 [2023-01-28 04:02:16,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:16,342 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 50 treesize of output 43 [2023-01-28 04:02:16,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:16,704 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 45 treesize of output 64 [2023-01-28 04:02:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 04:02:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746200754] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:16,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-01-28 04:02:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305564044] [2023-01-28 04:02:16,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:16,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 04:02:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 04:02:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=806, Unknown=1, NotChecked=58, Total=992 [2023-01-28 04:02:16,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 682 [2023-01-28 04:02:16,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 763 transitions, 15542 flow. Second operand has 32 states, 32 states have (on average 221.25) internal successors, (7080), 32 states have internal predecessors, (7080), 0 states have call successors, (0), 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 04:02:16,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:16,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 682 [2023-01-28 04:02:16,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:02:19,187 INFO L130 PetriNetUnfolder]: 6214/9083 cut-off events. [2023-01-28 04:02:19,187 INFO L131 PetriNetUnfolder]: For 183906/183906 co-relation queries the response was YES. [2023-01-28 04:02:19,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69269 conditions, 9083 events. 6214/9083 cut-off events. For 183906/183906 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 49018 event pairs, 1972 based on Foata normal form. 1/9084 useless extension candidates. Maximal degree in co-relation 68562. Up to 8322 conditions per place. [2023-01-28 04:02:19,312 INFO L137 encePairwiseOnDemand]: 671/682 looper letters, 532 selfloop transitions, 278 changer transitions 1/811 dead transitions. [2023-01-28 04:02:19,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 811 transitions, 17766 flow [2023-01-28 04:02:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:02:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:02:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2721 transitions. [2023-01-28 04:02:19,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3324780058651026 [2023-01-28 04:02:19,314 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2721 transitions. [2023-01-28 04:02:19,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2721 transitions. [2023-01-28 04:02:19,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:02:19,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2721 transitions. [2023-01-28 04:02:19,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 226.75) internal successors, (2721), 12 states have internal predecessors, (2721), 0 states have call successors, (0), 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 04:02:19,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:02:19,320 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:02:19,320 INFO L175 Difference]: Start difference. First operand has 368 places, 763 transitions, 15542 flow. Second operand 12 states and 2721 transitions. [2023-01-28 04:02:19,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 811 transitions, 17766 flow [2023-01-28 04:02:19,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 811 transitions, 16989 flow, removed 110 selfloop flow, removed 8 redundant places. [2023-01-28 04:02:20,009 INFO L231 Difference]: Finished difference. Result has 375 places, 775 transitions, 15776 flow [2023-01-28 04:02:20,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=14765, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15776, PETRI_PLACES=375, PETRI_TRANSITIONS=775} [2023-01-28 04:02:20,010 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2023-01-28 04:02:20,010 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 775 transitions, 15776 flow [2023-01-28 04:02:20,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 221.25) internal successors, (7080), 32 states have internal predecessors, (7080), 0 states have call successors, (0), 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 04:02:20,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:20,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:20,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-01-28 04:02:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-01-28 04:02:20,220 INFO L420 AbstractCegarLoop]: === Iteration 48 === 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 04:02:20,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash -756902622, now seen corresponding path program 41 times [2023-01-28 04:02:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891521780] [2023-01-28 04:02:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:21,339 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 04:02:21,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:21,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891521780] [2023-01-28 04:02:21,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891521780] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11452855] [2023-01-28 04:02:21,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:02:21,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:21,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:21,341 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:21,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-28 04:02:21,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:02:21,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:21,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-28 04:02:21,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:21,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:21,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:21,935 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:02:21,935 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 21 treesize of output 26 [2023-01-28 04:02:22,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:22,024 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 28 treesize of output 20 [2023-01-28 04:02:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:22,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:22,179 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_3060 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3060))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_3060 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3060))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2023-01-28 04:02:22,194 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (select (select |c_#memory_int| c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_3060 (Array Int Int))) (<= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3060))) (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset))) .cse1)) (forall ((v_ArrVal_3060 (Array Int Int))) (<= .cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3060))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))))))) is different from false [2023-01-28 04:02:22,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:22,235 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 158 treesize of output 154 [2023-01-28 04:02:22,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:22,246 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 78 treesize of output 78 [2023-01-28 04:02:22,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:22,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:22,624 INFO L321 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size [2023-01-28 04:02:22,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 57 [2023-01-28 04:02:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-01-28 04:02:22,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11452855] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:22,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 33 [2023-01-28 04:02:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229467283] [2023-01-28 04:02:22,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 04:02:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 04:02:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=926, Unknown=2, NotChecked=126, Total=1190 [2023-01-28 04:02:22,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 682 [2023-01-28 04:02:22,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 775 transitions, 15776 flow. Second operand has 35 states, 35 states have (on average 196.0) internal successors, (6860), 35 states have internal predecessors, (6860), 0 states have call successors, (0), 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 04:02:22,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:22,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 682 [2023-01-28 04:02:22,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:02:26,786 INFO L130 PetriNetUnfolder]: 6396/9350 cut-off events. [2023-01-28 04:02:26,787 INFO L131 PetriNetUnfolder]: For 220141/220141 co-relation queries the response was YES. [2023-01-28 04:02:26,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72643 conditions, 9350 events. 6396/9350 cut-off events. For 220141/220141 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 50889 event pairs, 1979 based on Foata normal form. 1/9351 useless extension candidates. Maximal degree in co-relation 71932. Up to 8377 conditions per place. [2023-01-28 04:02:26,907 INFO L137 encePairwiseOnDemand]: 669/682 looper letters, 571 selfloop transitions, 296 changer transitions 1/868 dead transitions. [2023-01-28 04:02:26,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 868 transitions, 18892 flow [2023-01-28 04:02:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:02:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:02:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3852 transitions. [2023-01-28 04:02:26,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29726809692853834 [2023-01-28 04:02:26,910 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3852 transitions. [2023-01-28 04:02:26,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3852 transitions. [2023-01-28 04:02:26,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:02:26,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3852 transitions. [2023-01-28 04:02:26,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 202.73684210526315) internal successors, (3852), 19 states have internal predecessors, (3852), 0 states have call successors, (0), 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 04:02:26,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 682.0) internal successors, (13640), 20 states have internal predecessors, (13640), 0 states have call successors, (0), 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 04:02:26,917 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 682.0) internal successors, (13640), 20 states have internal predecessors, (13640), 0 states have call successors, (0), 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 04:02:26,917 INFO L175 Difference]: Start difference. First operand has 375 places, 775 transitions, 15776 flow. Second operand 19 states and 3852 transitions. [2023-01-28 04:02:26,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 868 transitions, 18892 flow [2023-01-28 04:02:27,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 868 transitions, 18141 flow, removed 125 selfloop flow, removed 7 redundant places. [2023-01-28 04:02:27,705 INFO L231 Difference]: Finished difference. Result has 389 places, 792 transitions, 16486 flow [2023-01-28 04:02:27,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16486, PETRI_PLACES=389, PETRI_TRANSITIONS=792} [2023-01-28 04:02:27,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2023-01-28 04:02:27,706 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 792 transitions, 16486 flow [2023-01-28 04:02:27,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 196.0) internal successors, (6860), 35 states have internal predecessors, (6860), 0 states have call successors, (0), 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 04:02:27,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:27,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:27,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-01-28 04:02:27,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-01-28 04:02:27,919 INFO L420 AbstractCegarLoop]: === Iteration 49 === 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 04:02:27,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:27,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1173329740, now seen corresponding path program 42 times [2023-01-28 04:02:27,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:27,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305794468] [2023-01-28 04:02:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:27,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:02:29,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305794468] [2023-01-28 04:02:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305794468] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329751930] [2023-01-28 04:02:29,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:02:29,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:29,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:29,159 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:29,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-28 04:02:29,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:02:29,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:29,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 98 conjunts are in the unsatisfiable core [2023-01-28 04:02:29,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:29,405 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-01-28 04:02:29,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-01-28 04:02:29,465 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 04:02:29,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 04:02:29,538 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:02:29,539 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 11 treesize of output 11 [2023-01-28 04:02:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:29,927 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 14 treesize of output 16 [2023-01-28 04:02:30,015 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:30,029 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:02:30,029 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 36 treesize of output 38 [2023-01-28 04:02:30,170 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:30,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:30,194 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 102 treesize of output 106 [2023-01-28 04:02:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:30,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:31,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:31,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2050 treesize of output 1796 [2023-01-28 04:02:31,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:31,188 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 722 treesize of output 662 [2023-01-28 04:02:37,198 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 12 treesize of output 6 [2023-01-28 04:02:37,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,210 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 18 treesize of output 19 [2023-01-28 04:02:37,225 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:37,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 39 [2023-01-28 04:02:37,252 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:37,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2023-01-28 04:02:37,310 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 14 treesize of output 8 [2023-01-28 04:02:37,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:37,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 39 [2023-01-28 04:02:37,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,348 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2023-01-28 04:02:37,356 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:37,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 37 [2023-01-28 04:02:37,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,415 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 278 treesize of output 196 [2023-01-28 04:02:37,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,653 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 16 treesize of output 17 [2023-01-28 04:02:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,668 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 29 [2023-01-28 04:02:37,682 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 14 treesize of output 8 [2023-01-28 04:02:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,702 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 67 [2023-01-28 04:02:37,730 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:37,751 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 25 [2023-01-28 04:02:37,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,767 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-01-28 04:02:37,809 INFO L321 Elim1Store]: treesize reduction 28, result has 56.9 percent of original size [2023-01-28 04:02:37,810 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 26 treesize of output 47 [2023-01-28 04:02:37,858 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 12 treesize of output 6 [2023-01-28 04:02:37,948 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:37,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,957 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2023-01-28 04:02:37,963 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:37,980 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:37,985 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:37,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-01-28 04:02:37,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:37,994 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2023-01-28 04:02:38,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:38,056 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-01-28 04:02:38,069 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:38,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:38,076 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2023-01-28 04:02:38,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:38,080 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-01-28 04:02:38,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:38,093 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-01-28 04:02:38,112 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-01-28 04:02:38,178 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:38,180 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:38,227 INFO L321 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size [2023-01-28 04:02:38,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 326 treesize of output 228 [2023-01-28 04:02:38,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:38,242 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 50 treesize of output 43 [2023-01-28 04:02:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:38,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329751930] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:38,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:38,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2023-01-28 04:02:38,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963075030] [2023-01-28 04:02:38,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:38,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:02:38,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:02:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=981, Unknown=19, NotChecked=0, Total=1122 [2023-01-28 04:02:38,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 682 [2023-01-28 04:02:38,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 792 transitions, 16486 flow. Second operand has 34 states, 34 states have (on average 193.88235294117646) internal successors, (6592), 34 states have internal predecessors, (6592), 0 states have call successors, (0), 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 04:02:38,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:38,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 682 [2023-01-28 04:02:38,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:02:42,987 INFO L130 PetriNetUnfolder]: 6548/9569 cut-off events. [2023-01-28 04:02:42,987 INFO L131 PetriNetUnfolder]: For 230391/230391 co-relation queries the response was YES. [2023-01-28 04:02:43,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75066 conditions, 9569 events. 6548/9569 cut-off events. For 230391/230391 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 52124 event pairs, 2146 based on Foata normal form. 1/9570 useless extension candidates. Maximal degree in co-relation 74352. Up to 8797 conditions per place. [2023-01-28 04:02:43,105 INFO L137 encePairwiseOnDemand]: 670/682 looper letters, 572 selfloop transitions, 301 changer transitions 1/874 dead transitions. [2023-01-28 04:02:43,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 874 transitions, 19583 flow [2023-01-28 04:02:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:02:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:02:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4167 transitions. [2023-01-28 04:02:43,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909509844993716 [2023-01-28 04:02:43,108 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4167 transitions. [2023-01-28 04:02:43,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4167 transitions. [2023-01-28 04:02:43,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:02:43,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4167 transitions. [2023-01-28 04:02:43,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 198.42857142857142) internal successors, (4167), 21 states have internal predecessors, (4167), 0 states have call successors, (0), 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 04:02:43,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 682.0) internal successors, (15004), 22 states have internal predecessors, (15004), 0 states have call successors, (0), 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 04:02:43,117 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 682.0) internal successors, (15004), 22 states have internal predecessors, (15004), 0 states have call successors, (0), 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 04:02:43,117 INFO L175 Difference]: Start difference. First operand has 389 places, 792 transitions, 16486 flow. Second operand 21 states and 4167 transitions. [2023-01-28 04:02:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 874 transitions, 19583 flow [2023-01-28 04:02:43,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 874 transitions, 18616 flow, removed 438 selfloop flow, removed 7 redundant places. [2023-01-28 04:02:43,936 INFO L231 Difference]: Finished difference. Result has 404 places, 817 transitions, 17080 flow [2023-01-28 04:02:43,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=15773, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17080, PETRI_PLACES=404, PETRI_TRANSITIONS=817} [2023-01-28 04:02:43,937 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2023-01-28 04:02:43,937 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 817 transitions, 17080 flow [2023-01-28 04:02:43,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 193.88235294117646) internal successors, (6592), 34 states have internal predecessors, (6592), 0 states have call successors, (0), 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 04:02:43,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:43,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:43,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-01-28 04:02:44,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-28 04:02:44,143 INFO L420 AbstractCegarLoop]: === Iteration 50 === 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 04:02:44,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1735077004, now seen corresponding path program 43 times [2023-01-28 04:02:44,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:44,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394525791] [2023-01-28 04:02:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394525791] [2023-01-28 04:02:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394525791] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814038305] [2023-01-28 04:02:44,781 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:02:44,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:44,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:44,782 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:44,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-28 04:02:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:44,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 04:02:44,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:45,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:45,235 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 14 treesize of output 16 [2023-01-28 04:02:45,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:45,379 INFO L321 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2023-01-28 04:02:45,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 26 [2023-01-28 04:02:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:45,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:45,520 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((v_ArrVal_3199 (Array Int Int)) (~B~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3199))) (let ((.cse0 (select .cse2 ~B~0.base))) (<= (+ (select .cse0 .cse1) c_~asum~0 c_~bsum~0) (+ (select .cse0 c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset)))))) (forall ((v_ArrVal_3199 (Array Int Int)) (~B~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3199))) (let ((.cse3 (select .cse4 ~B~0.base))) (<= (+ (select .cse3 c_~B~0.offset) c_~csum~0 (select (select .cse4 c_~A~0.base) c_~A~0.offset)) (+ (select .cse3 .cse1) c_~asum~0 c_~bsum~0))))))) is different from false [2023-01-28 04:02:45,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:45,558 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 154 treesize of output 166 [2023-01-28 04:02:45,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:45,578 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 90 treesize of output 98 [2023-01-28 04:02:45,935 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 04:02:46,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814038305] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:46,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:46,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-01-28 04:02:46,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508181086] [2023-01-28 04:02:46,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:46,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 04:02:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 04:02:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=543, Unknown=1, NotChecked=48, Total=702 [2023-01-28 04:02:46,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 682 [2023-01-28 04:02:46,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 817 transitions, 17080 flow. Second operand has 27 states, 27 states have (on average 233.44444444444446) internal successors, (6303), 27 states have internal predecessors, (6303), 0 states have call successors, (0), 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 04:02:46,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:46,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 682 [2023-01-28 04:02:46,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:02:48,682 INFO L130 PetriNetUnfolder]: 6706/9802 cut-off events. [2023-01-28 04:02:48,682 INFO L131 PetriNetUnfolder]: For 228011/228011 co-relation queries the response was YES. [2023-01-28 04:02:48,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76543 conditions, 9802 events. 6706/9802 cut-off events. For 228011/228011 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 53840 event pairs, 2101 based on Foata normal form. 1/9803 useless extension candidates. Maximal degree in co-relation 75826. Up to 8809 conditions per place. [2023-01-28 04:02:48,821 INFO L137 encePairwiseOnDemand]: 672/682 looper letters, 580 selfloop transitions, 288 changer transitions 1/869 dead transitions. [2023-01-28 04:02:48,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 869 transitions, 19681 flow [2023-01-28 04:02:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:02:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:02:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2411 transitions. [2023-01-28 04:02:48,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3535190615835777 [2023-01-28 04:02:48,824 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2411 transitions. [2023-01-28 04:02:48,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2411 transitions. [2023-01-28 04:02:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:02:48,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2411 transitions. [2023-01-28 04:02:48,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 241.1) internal successors, (2411), 10 states have internal predecessors, (2411), 0 states have call successors, (0), 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 04:02:48,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 04:02:48,828 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 04:02:48,828 INFO L175 Difference]: Start difference. First operand has 404 places, 817 transitions, 17080 flow. Second operand 10 states and 2411 transitions. [2023-01-28 04:02:48,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 869 transitions, 19681 flow [2023-01-28 04:02:49,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 869 transitions, 18808 flow, removed 228 selfloop flow, removed 15 redundant places. [2023-01-28 04:02:49,788 INFO L231 Difference]: Finished difference. Result has 400 places, 827 transitions, 17430 flow [2023-01-28 04:02:49,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=16229, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17430, PETRI_PLACES=400, PETRI_TRANSITIONS=827} [2023-01-28 04:02:49,789 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2023-01-28 04:02:49,789 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 827 transitions, 17430 flow [2023-01-28 04:02:49,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 233.44444444444446) internal successors, (6303), 27 states have internal predecessors, (6303), 0 states have call successors, (0), 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 04:02:49,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:49,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:49,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-01-28 04:02:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:49,991 INFO L420 AbstractCegarLoop]: === Iteration 51 === 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 04:02:49,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash 151490530, now seen corresponding path program 44 times [2023-01-28 04:02:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413636501] [2023-01-28 04:02:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:50,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413636501] [2023-01-28 04:02:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413636501] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667248339] [2023-01-28 04:02:50,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:02:50,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:50,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:50,501 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:50,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-01-28 04:02:50,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:02:50,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:50,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 04:02:50,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:50,957 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 14 treesize of output 16 [2023-01-28 04:02:51,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:51,063 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 35 treesize of output 23 [2023-01-28 04:02:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:51,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:51,204 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset))) (and (forall ((v_ArrVal_3266 (Array Int Int)) (~A~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3266))) (let ((.cse0 (select .cse2 ~A~0.base))) (<= (+ c_~asum~0 c_~bsum~0 (select .cse0 .cse1)) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) (select .cse0 c_~A~0.offset) c_~csum~0))))) (forall ((v_ArrVal_3266 (Array Int Int)) (~A~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3266))) (let ((.cse4 (select .cse3 ~A~0.base))) (<= (+ (select (select .cse3 c_~B~0.base) c_~B~0.offset) (select .cse4 c_~A~0.offset) c_~csum~0) (+ c_~asum~0 c_~bsum~0 (select .cse4 .cse1)))))))) is different from false [2023-01-28 04:02:51,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:51,241 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 154 treesize of output 166 [2023-01-28 04:02:51,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:51,260 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 90 treesize of output 98 [2023-01-28 04:02:51,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 04:02:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667248339] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:51,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:51,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-01-28 04:02:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757978367] [2023-01-28 04:02:51,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:51,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 04:02:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:51,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 04:02:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=500, Unknown=1, NotChecked=46, Total=650 [2023-01-28 04:02:51,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 682 [2023-01-28 04:02:51,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 827 transitions, 17430 flow. Second operand has 26 states, 26 states have (on average 227.46153846153845) internal successors, (5914), 26 states have internal predecessors, (5914), 0 states have call successors, (0), 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 04:02:51,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:51,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 682 [2023-01-28 04:02:51,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:02:54,447 INFO L130 PetriNetUnfolder]: 6766/9891 cut-off events. [2023-01-28 04:02:54,448 INFO L131 PetriNetUnfolder]: For 215436/215436 co-relation queries the response was YES. [2023-01-28 04:02:54,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77033 conditions, 9891 events. 6766/9891 cut-off events. For 215436/215436 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 54415 event pairs, 2244 based on Foata normal form. 1/9892 useless extension candidates. Maximal degree in co-relation 76338. Up to 9091 conditions per place. [2023-01-28 04:02:54,564 INFO L137 encePairwiseOnDemand]: 674/682 looper letters, 578 selfloop transitions, 287 changer transitions 1/866 dead transitions. [2023-01-28 04:02:54,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 866 transitions, 19629 flow [2023-01-28 04:02:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:02:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:02:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2116 transitions. [2023-01-28 04:02:54,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34473769957640926 [2023-01-28 04:02:54,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2116 transitions. [2023-01-28 04:02:54,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2116 transitions. [2023-01-28 04:02:54,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:02:54,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2116 transitions. [2023-01-28 04:02:54,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.11111111111111) internal successors, (2116), 9 states have internal predecessors, (2116), 0 states have call successors, (0), 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 04:02:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:02:54,569 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 682.0) internal successors, (6820), 10 states have internal predecessors, (6820), 0 states have call successors, (0), 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 04:02:54,569 INFO L175 Difference]: Start difference. First operand has 400 places, 827 transitions, 17430 flow. Second operand 9 states and 2116 transitions. [2023-01-28 04:02:54,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 866 transitions, 19629 flow [2023-01-28 04:02:55,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 866 transitions, 18771 flow, removed 268 selfloop flow, removed 5 redundant places. [2023-01-28 04:02:55,538 INFO L231 Difference]: Finished difference. Result has 405 places, 832 transitions, 17426 flow [2023-01-28 04:02:55,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=16578, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17426, PETRI_PLACES=405, PETRI_TRANSITIONS=832} [2023-01-28 04:02:55,539 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 373 predicate places. [2023-01-28 04:02:55,539 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 832 transitions, 17426 flow [2023-01-28 04:02:55,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 227.46153846153845) internal successors, (5914), 26 states have internal predecessors, (5914), 0 states have call successors, (0), 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 04:02:55,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:02:55,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:02:55,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-01-28 04:02:55,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:55,740 INFO L420 AbstractCegarLoop]: === Iteration 52 === 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 04:02:55,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:02:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -946393740, now seen corresponding path program 45 times [2023-01-28 04:02:55,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:02:55,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863150747] [2023-01-28 04:02:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:02:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:02:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:02:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:02:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863150747] [2023-01-28 04:02:56,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863150747] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:02:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490563383] [2023-01-28 04:02:56,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:02:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:02:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:02:56,277 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:02:56,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-01-28 04:02:56,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:02:56,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:02:56,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 04:02:56,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:02:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:02:56,730 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 14 treesize of output 16 [2023-01-28 04:02:56,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:56,869 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 28 treesize of output 20 [2023-01-28 04:02:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:02:56,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:02:57,017 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((v_ArrVal_3333 (Array Int Int)) (~B~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3333))) (let ((.cse1 (select .cse0 ~B~0.base))) (<= (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select .cse1 c_~B~0.offset) c_~csum~0) (+ (select .cse1 .cse2) c_~asum~0 c_~bsum~0))))) (forall ((v_ArrVal_3333 (Array Int Int)) (~B~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3333))) (let ((.cse3 (select .cse4 ~B~0.base))) (<= (+ (select .cse3 .cse2) c_~asum~0 c_~bsum~0) (+ (select (select .cse4 c_~A~0.base) c_~A~0.offset) (select .cse3 c_~B~0.offset) c_~csum~0))))))) is different from false [2023-01-28 04:02:57,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:57,054 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 154 treesize of output 166 [2023-01-28 04:02:57,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:02:57,072 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 90 treesize of output 98 [2023-01-28 04:02:57,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:02:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 04:02:57,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490563383] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:02:57,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:02:57,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 26 [2023-01-28 04:02:57,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094818325] [2023-01-28 04:02:57,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:02:57,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:02:57,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:02:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:02:57,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=590, Unknown=1, NotChecked=50, Total=756 [2023-01-28 04:02:57,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 682 [2023-01-28 04:02:57,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 832 transitions, 17426 flow. Second operand has 28 states, 28 states have (on average 233.64285714285714) internal successors, (6542), 28 states have internal predecessors, (6542), 0 states have call successors, (0), 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 04:02:57,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:02:57,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 682 [2023-01-28 04:02:57,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:03:00,261 INFO L130 PetriNetUnfolder]: 6826/9980 cut-off events. [2023-01-28 04:03:00,261 INFO L131 PetriNetUnfolder]: For 197989/197989 co-relation queries the response was YES. [2023-01-28 04:03:00,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76734 conditions, 9980 events. 6826/9980 cut-off events. For 197989/197989 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 54883 event pairs, 2287 based on Foata normal form. 1/9981 useless extension candidates. Maximal degree in co-relation 76036. Up to 9211 conditions per place. [2023-01-28 04:03:00,402 INFO L137 encePairwiseOnDemand]: 673/682 looper letters, 602 selfloop transitions, 272 changer transitions 1/875 dead transitions. [2023-01-28 04:03:00,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 875 transitions, 19669 flow [2023-01-28 04:03:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:03:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:03:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2405 transitions. [2023-01-28 04:03:00,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526392961876833 [2023-01-28 04:03:00,404 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2405 transitions. [2023-01-28 04:03:00,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2405 transitions. [2023-01-28 04:03:00,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:03:00,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2405 transitions. [2023-01-28 04:03:00,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.5) internal successors, (2405), 10 states have internal predecessors, (2405), 0 states have call successors, (0), 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 04:03:00,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 04:03:00,409 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 682.0) internal successors, (7502), 11 states have internal predecessors, (7502), 0 states have call successors, (0), 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 04:03:00,409 INFO L175 Difference]: Start difference. First operand has 405 places, 832 transitions, 17426 flow. Second operand 10 states and 2405 transitions. [2023-01-28 04:03:00,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 875 transitions, 19669 flow [2023-01-28 04:03:01,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 875 transitions, 18891 flow, removed 111 selfloop flow, removed 6 redundant places. [2023-01-28 04:03:01,371 INFO L231 Difference]: Finished difference. Result has 410 places, 837 transitions, 17470 flow [2023-01-28 04:03:01,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=16654, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17470, PETRI_PLACES=410, PETRI_TRANSITIONS=837} [2023-01-28 04:03:01,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2023-01-28 04:03:01,372 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 837 transitions, 17470 flow [2023-01-28 04:03:01,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 233.64285714285714) internal successors, (6542), 28 states have internal predecessors, (6542), 0 states have call successors, (0), 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 04:03:01,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:03:01,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:03:01,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-01-28 04:03:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:03:01,580 INFO L420 AbstractCegarLoop]: === Iteration 53 === 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 04:03:01,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:03:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1781471466, now seen corresponding path program 46 times [2023-01-28 04:03:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:03:01,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496568482] [2023-01-28 04:03:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:03:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:03:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:03:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:03:02,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:03:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496568482] [2023-01-28 04:03:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496568482] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:03:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138865384] [2023-01-28 04:03:02,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:03:02,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:03:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:03:02,419 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:03:02,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-01-28 04:03:02,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:03:02,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:03:02,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-28 04:03:02,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:03:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:03:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:03:03,009 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:03:03,009 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 21 treesize of output 26 [2023-01-28 04:03:03,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:03,089 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 28 treesize of output 20 [2023-01-28 04:03:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:03:03,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:03:03,208 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_3400 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3400))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_3400 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3400))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2023-01-28 04:03:03,223 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0 (select (select |c_#memory_int| c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))))) (and (forall ((v_ArrVal_3400 (Array Int Int))) (<= .cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3400))) (+ (select (select .cse1 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))))) (forall ((v_ArrVal_3400 (Array Int Int))) (<= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3400))) (+ (select (select .cse2 c_~B~0.base) c_~B~0.offset) c_~csum~0 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) .cse0)))) is different from false [2023-01-28 04:03:03,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:03,255 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 158 treesize of output 154 [2023-01-28 04:03:03,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:03,264 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 78 treesize of output 78 [2023-01-28 04:03:03,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:03:03,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:03:03,634 INFO L321 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size [2023-01-28 04:03:03,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 57 [2023-01-28 04:03:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-01-28 04:03:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138865384] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:03:03,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:03:03,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 32 [2023-01-28 04:03:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321229430] [2023-01-28 04:03:03,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:03:03,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:03:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:03:03,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:03:03,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=860, Unknown=2, NotChecked=122, Total=1122 [2023-01-28 04:03:03,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 682 [2023-01-28 04:03:03,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 837 transitions, 17470 flow. Second operand has 34 states, 34 states have (on average 205.05882352941177) internal successors, (6972), 34 states have internal predecessors, (6972), 0 states have call successors, (0), 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 04:03:03,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:03:03,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 682 [2023-01-28 04:03:03,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:03:07,224 INFO L130 PetriNetUnfolder]: 6954/10169 cut-off events. [2023-01-28 04:03:07,225 INFO L131 PetriNetUnfolder]: For 215940/215940 co-relation queries the response was YES. [2023-01-28 04:03:07,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78649 conditions, 10169 events. 6954/10169 cut-off events. For 215940/215940 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 56124 event pairs, 2177 based on Foata normal form. 1/10170 useless extension candidates. Maximal degree in co-relation 77949. Up to 9041 conditions per place. [2023-01-28 04:03:07,353 INFO L137 encePairwiseOnDemand]: 669/682 looper letters, 580 selfloop transitions, 307 changer transitions 1/888 dead transitions. [2023-01-28 04:03:07,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 888 transitions, 20089 flow [2023-01-28 04:03:07,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:03:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:03:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2540 transitions. [2023-01-28 04:03:07,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31036168132942327 [2023-01-28 04:03:07,355 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2540 transitions. [2023-01-28 04:03:07,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2540 transitions. [2023-01-28 04:03:07,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:03:07,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2540 transitions. [2023-01-28 04:03:07,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.66666666666666) internal successors, (2540), 12 states have internal predecessors, (2540), 0 states have call successors, (0), 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 04:03:07,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:03:07,360 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 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 04:03:07,360 INFO L175 Difference]: Start difference. First operand has 410 places, 837 transitions, 17470 flow. Second operand 12 states and 2540 transitions. [2023-01-28 04:03:07,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 888 transitions, 20089 flow [2023-01-28 04:03:08,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 888 transitions, 19331 flow, removed 115 selfloop flow, removed 7 redundant places. [2023-01-28 04:03:08,188 INFO L231 Difference]: Finished difference. Result has 417 places, 846 transitions, 17973 flow [2023-01-28 04:03:08,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=16726, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17973, PETRI_PLACES=417, PETRI_TRANSITIONS=846} [2023-01-28 04:03:08,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2023-01-28 04:03:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 846 transitions, 17973 flow [2023-01-28 04:03:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 205.05882352941177) internal successors, (6972), 34 states have internal predecessors, (6972), 0 states have call successors, (0), 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 04:03:08,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:03:08,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:03:08,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-01-28 04:03:08,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-01-28 04:03:08,390 INFO L420 AbstractCegarLoop]: === Iteration 54 === 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 04:03:08,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:03:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2004462942, now seen corresponding path program 47 times [2023-01-28 04:03:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:03:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255741934] [2023-01-28 04:03:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:03:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:03:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:03:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:03:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:03:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255741934] [2023-01-28 04:03:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255741934] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:03:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677922588] [2023-01-28 04:03:09,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:03:09,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:03:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:03:09,253 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:03:09,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-01-28 04:03:09,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:03:09,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:03:09,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-28 04:03:09,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:03:09,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:03:09,717 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 14 treesize of output 16 [2023-01-28 04:03:09,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:03:09,763 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 14 treesize of output 16 [2023-01-28 04:03:09,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:09,872 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 35 treesize of output 23 [2023-01-28 04:03:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:03:09,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:03:10,055 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_3468 (Array Int Int))) (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3468) c_~A~0.base) c_~A~0.offset) c_~csum~0) .cse0)) (forall ((v_ArrVal_3468 (Array Int Int))) (<= .cse0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3468) c_~A~0.base) c_~A~0.offset) c_~csum~0))))) is different from false [2023-01-28 04:03:10,065 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~asum~0 c_~bsum~0))) (and (forall ((v_ArrVal_3467 (Array Int Int)) (v_ArrVal_3468 (Array Int Int))) (<= (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3467) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3468) c_~A~0.base) c_~A~0.offset) c_~csum~0) .cse0)) (forall ((v_ArrVal_3467 (Array Int Int)) (v_ArrVal_3468 (Array Int Int))) (<= .cse0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3467) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3468) c_~A~0.base) c_~A~0.offset) c_~csum~0))))) is different from false [2023-01-28 04:03:10,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:10,079 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 218 treesize of output 154 [2023-01-28 04:03:10,083 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 33 treesize of output 31 [2023-01-28 04:03:10,086 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 34 treesize of output 30 [2023-01-28 04:03:10,110 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:03:10,110 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:03:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 04:03:10,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677922588] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:03:10,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:03:10,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 30 [2023-01-28 04:03:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112292182] [2023-01-28 04:03:10,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:03:10,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 04:03:10,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:03:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 04:03:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=760, Unknown=2, NotChecked=114, Total=992 [2023-01-28 04:03:10,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 682 [2023-01-28 04:03:10,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 846 transitions, 17973 flow. Second operand has 32 states, 32 states have (on average 205.0) internal successors, (6560), 32 states have internal predecessors, (6560), 0 states have call successors, (0), 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 04:03:10,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:03:10,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 682 [2023-01-28 04:03:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:03:13,627 INFO L130 PetriNetUnfolder]: 7122/10412 cut-off events. [2023-01-28 04:03:13,628 INFO L131 PetriNetUnfolder]: For 220813/220813 co-relation queries the response was YES. [2023-01-28 04:03:13,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81417 conditions, 10412 events. 7122/10412 cut-off events. For 220813/220813 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 57427 event pairs, 1503 based on Foata normal form. 1/10413 useless extension candidates. Maximal degree in co-relation 80714. Up to 8907 conditions per place. [2023-01-28 04:03:13,778 INFO L137 encePairwiseOnDemand]: 665/682 looper letters, 525 selfloop transitions, 427 changer transitions 1/953 dead transitions. [2023-01-28 04:03:13,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 953 transitions, 21629 flow [2023-01-28 04:03:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:03:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:03:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2751 transitions. [2023-01-28 04:03:13,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31028648770584255 [2023-01-28 04:03:13,780 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2751 transitions. [2023-01-28 04:03:13,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2751 transitions. [2023-01-28 04:03:13,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:03:13,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2751 transitions. [2023-01-28 04:03:13,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 211.6153846153846) internal successors, (2751), 13 states have internal predecessors, (2751), 0 states have call successors, (0), 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 04:03:13,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:03:13,785 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 682.0) internal successors, (9548), 14 states have internal predecessors, (9548), 0 states have call successors, (0), 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 04:03:13,785 INFO L175 Difference]: Start difference. First operand has 417 places, 846 transitions, 17973 flow. Second operand 13 states and 2751 transitions. [2023-01-28 04:03:13,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 953 transitions, 21629 flow [2023-01-28 04:03:14,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 953 transitions, 20758 flow, removed 260 selfloop flow, removed 7 redundant places. [2023-01-28 04:03:14,690 INFO L231 Difference]: Finished difference. Result has 426 places, 903 transitions, 19658 flow [2023-01-28 04:03:14,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=17117, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19658, PETRI_PLACES=426, PETRI_TRANSITIONS=903} [2023-01-28 04:03:14,690 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2023-01-28 04:03:14,691 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 903 transitions, 19658 flow [2023-01-28 04:03:14,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 205.0) internal successors, (6560), 32 states have internal predecessors, (6560), 0 states have call successors, (0), 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 04:03:14,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:03:14,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:03:14,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-01-28 04:03:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-01-28 04:03:14,892 INFO L420 AbstractCegarLoop]: === Iteration 55 === 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 04:03:14,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:03:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 497958058, now seen corresponding path program 48 times [2023-01-28 04:03:14,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:03:14,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908430675] [2023-01-28 04:03:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:03:14,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:03:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:03:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:03:15,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:03:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908430675] [2023-01-28 04:03:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908430675] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:03:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808996102] [2023-01-28 04:03:15,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:03:15,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:03:15,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:03:15,607 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:03:15,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-01-28 04:03:15,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:03:15,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:03:15,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 94 conjunts are in the unsatisfiable core [2023-01-28 04:03:15,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:03:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:03:15,849 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 44 treesize of output 42 [2023-01-28 04:03:15,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:03:15,943 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:03:15,943 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 11 treesize of output 11 [2023-01-28 04:03:16,133 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 14 treesize of output 16 [2023-01-28 04:03:16,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:03:16,226 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 14 treesize of output 16 [2023-01-28 04:03:16,363 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-01-28 04:03:16,363 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 29 treesize of output 35 [2023-01-28 04:03:16,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:16,465 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 66 treesize of output 94 [2023-01-28 04:03:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:03:16,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:03:17,147 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~B~0.offset))) (and (forall ((~C~0.offset Int) (v_ArrVal_3540 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3540))) (let ((.cse0 (select (select .cse2 c_~B~0.base) c_~B~0.offset)) (.cse1 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) (<= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) .cse3)))))) (forall ((~C~0.offset Int) (v_ArrVal_3540 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3540))) (let ((.cse5 (select (select .cse4 c_~B~0.base) c_~B~0.offset)) (.cse6 (select (select .cse4 c_~A~0.base) c_~A~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) ~C~0.offset (+ .cse5 .cse6))) c_~B~0.base) .cse3)) (+ .cse5 c_~csum~0 .cse6))))))) is different from false [2023-01-28 04:03:17,157 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_3540 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3540))) (let ((.cse1 (select (select .cse0 c_~B~0.base) c_~B~0.offset)) (.cse2 (select (select .cse0 c_~A~0.base) c_~A~0.offset))) (<= (+ (select (select (store .cse0 c_~C~0.base (store (select .cse0 c_~C~0.base) ~C~0.offset (+ .cse1 .cse2))) c_~B~0.base) c_~B~0.offset) c_~asum~0 c_~bsum~0) (+ .cse1 c_~csum~0 .cse2))))) (forall ((~C~0.offset Int) (v_ArrVal_3540 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3540))) (let ((.cse3 (select (select .cse5 c_~B~0.base) c_~B~0.offset)) (.cse4 (select (select .cse5 c_~A~0.base) c_~A~0.offset))) (<= (+ .cse3 c_~csum~0 .cse4) (+ (select (select (store .cse5 c_~C~0.base (store (select .cse5 c_~C~0.base) ~C~0.offset (+ .cse3 .cse4))) c_~B~0.base) c_~B~0.offset) c_~asum~0 c_~bsum~0)))))) is different from false [2023-01-28 04:03:17,173 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~C~0.offset Int) (v_ArrVal_3540 (Array Int Int)) (v_ArrVal_3539 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3539) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3540))) (let ((.cse1 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (.cse2 (select (select .cse0 c_~B~0.base) c_~B~0.offset))) (<= (+ c_~asum~0 c_~bsum~0 (select (select (store .cse0 c_~C~0.base (store (select .cse0 c_~C~0.base) ~C~0.offset (+ .cse1 .cse2))) c_~B~0.base) c_~B~0.offset)) (+ .cse1 c_~csum~0 .cse2))))) (forall ((~C~0.offset Int) (v_ArrVal_3540 (Array Int Int)) (v_ArrVal_3539 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3539) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3540))) (let ((.cse3 (select (select .cse5 c_~A~0.base) c_~A~0.offset)) (.cse4 (select (select .cse5 c_~B~0.base) c_~B~0.offset))) (<= (+ .cse3 c_~csum~0 .cse4) (+ c_~asum~0 c_~bsum~0 (select (select (store .cse5 c_~C~0.base (store (select .cse5 c_~C~0.base) ~C~0.offset (+ .cse3 .cse4))) c_~B~0.base) c_~B~0.offset))))))) is different from false [2023-01-28 04:03:17,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:17,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 381462 treesize of output 344046 [2023-01-28 04:03:17,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:17,847 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 4462 treesize of output 4310 [2023-01-28 04:03:17,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:03:17,904 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 4654 treesize of output 4438 Received shutdown request... [2023-01-28 04:11:23,941 WARN L238 SmtUtils]: Removed 1 from assertion stack [2023-01-28 04:11:23,945 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:11:23,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-01-28 04:11:23,955 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:11:23,955 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 04:11:24,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:11:24,152 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-4-5-5-4-5-4-5-3-6-2-5-1 context. [2023-01-28 04:11:24,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:11:24,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:11:24,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:11:24,154 INFO L445 BasicCegarLoop]: Path program histogram: [48, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:11:24,157 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:11:24,157 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:11:24,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:11:24 BasicIcfg [2023-01-28 04:11:24,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:11:24,166 INFO L158 Benchmark]: Toolchain (without parser) took 779193.91ms. Allocated memory was 369.1MB in the beginning and 3.2GB in the end (delta: 2.8GB). Free memory was 327.9MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. [2023-01-28 04:11:24,166 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:11:24,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.64ms. Allocated memory is still 369.1MB. Free memory was 327.9MB in the beginning and 316.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 04:11:24,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.15ms. Allocated memory is still 369.1MB. Free memory was 316.1MB in the beginning and 313.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 04:11:24,166 INFO L158 Benchmark]: Boogie Preprocessor took 36.97ms. Allocated memory is still 369.1MB. Free memory was 313.5MB in the beginning and 311.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:11:24,167 INFO L158 Benchmark]: RCFGBuilder took 682.02ms. Allocated memory is still 369.1MB. Free memory was 311.4MB in the beginning and 286.6MB in the end (delta: 24.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 04:11:24,167 INFO L158 Benchmark]: TraceAbstraction took 778212.29ms. Allocated memory was 369.1MB in the beginning and 3.2GB in the end (delta: 2.8GB). Free memory was 285.9MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. [2023-01-28 04:11:24,167 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 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.64ms. Allocated memory is still 369.1MB. Free memory was 327.9MB in the beginning and 316.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.15ms. Allocated memory is still 369.1MB. Free memory was 316.1MB in the beginning and 313.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.97ms. Allocated memory is still 369.1MB. Free memory was 313.5MB in the beginning and 311.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 682.02ms. Allocated memory is still 369.1MB. Free memory was 311.4MB in the beginning and 286.6MB in the end (delta: 24.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 778212.29ms. Allocated memory was 369.1MB in the beginning and 3.2GB in the end (delta: 2.8GB). Free memory was 285.9MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 289 PlacesBefore, 32 PlacesAfterwards, 308 TransitionsBefore, 28 TransitionsAfterwards, 12810 CoEnabledTransitionPairs, 8 FixpointIterations, 140 TrivialSequentialCompositions, 117 ConcurrentSequentialCompositions, 41 TrivialYvCompositions, 40 ConcurrentYvCompositions, 23 ChoiceCompositions, 361 TotalNumberOfCompositions, 12315 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11718, independent: 11663, independent conditional: 0, independent unconditional: 11663, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7585, independent: 7545, independent conditional: 0, independent unconditional: 7545, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11718, independent: 4118, independent conditional: 0, independent unconditional: 4118, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 7585, unknown conditional: 0, unknown unconditional: 7585] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-4-5-5-4-5-4-5-3-6-2-5-1 context. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-4-5-5-4-5-4-5-3-6-2-5-1 context. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-4-5-5-4-5-4-5-3-6-2-5-1 context. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-4-5-5-4-5-4-5-3-6-2-5-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 410 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: 778.0s, OverallIterations: 55, TraceHistogramMax: 1, PathProgramHistogramMax: 48, EmptinessCheckTime: 0.0s, AutomataDifference: 115.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 65 mSolverCounterUnknown, 5210 SdHoareTripleChecker+Valid, 23.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5210 mSDsluCounter, 2898 SdHoareTripleChecker+Invalid, 20.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2244 IncrementalHoareTripleChecker+Unchecked, 2550 mSDsCounter, 440 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37373 IncrementalHoareTripleChecker+Invalid, 40122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 440 mSolverCounterUnsat, 348 mSDtfsCounter, 37373 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3574 GetRequests, 1999 SyntacticMatches, 136 SemanticMatches, 1439 ConstructedPredicates, 21 IntricatePredicates, 2 DeprecatedPredicates, 11628 ImplicationChecksByTransitivity, 64.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19658occurred in iteration=54, InterpolantAutomatonStates: 616, 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: 0.9s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 143.8s InterpolantComputationTime, 2881 NumberOfCodeBlocks, 2881 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 4122 ConstructedInterpolants, 292 QuantifiedInterpolants, 97300 SizeOfPredicates, 1302 NumberOfNonLiveVariables, 18377 ConjunctsInSsa, 3941 ConjunctsInUnsatCore, 154 InterpolantComputations, 7 PerfectInterpolantSequences, 428/888 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