/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:00:52,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:00:52,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:00:52,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:00:52,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:00:52,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:00:52,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:00:52,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:00:52,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:00:52,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:00:52,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:00:52,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:00:52,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:00:52,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:00:52,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:00:52,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:00:52,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:00:52,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:00:52,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:00:52,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:00:52,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:00:52,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:00:52,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:00:52,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:00:52,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:00:52,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:00:52,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:00:52,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:00:52,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:00:52,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:00:52,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:00:52,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:00:52,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:00:52,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:00:52,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:00:52,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:00:52,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:00:52,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:00:52,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:00:52,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:00:52,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:00:52,295 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 10:00:52,320 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:00:52,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:00:52,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:00:52,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:00:52,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:00:52,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:00:52,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:00:52,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:00:52,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:00:52,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:00:52,323 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:00:52,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:00:52,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:00:52,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:00:52,554 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:00:52,564 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:00:52,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-01-28 10:00:53,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:00:53,794 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:00:53,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-01-28 10:00:53,799 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9b301a9/e713ac7f207146fc942cbb488e245e53/FLAGb2c5f94c7 [2023-01-28 10:00:54,209 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9b301a9/e713ac7f207146fc942cbb488e245e53 [2023-01-28 10:00:54,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:00:54,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:00:54,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:00:54,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:00:54,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:00:54,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7706850c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54, skipping insertion in model container [2023-01-28 10:00:54,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:00:54,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:00:54,352 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-commit-1.wvr-bad.c[5161,5174] [2023-01-28 10:00:54,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:00:54,365 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:00:54,384 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-commit-1.wvr-bad.c[5161,5174] [2023-01-28 10:00:54,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:00:54,391 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:00:54,391 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:00:54,395 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:00:54,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54 WrapperNode [2023-01-28 10:00:54,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:00:54,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:00:54,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:00:54,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:00:54,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,425 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 350 [2023-01-28 10:00:54,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:00:54,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:00:54,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:00:54,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:00:54,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,446 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:00:54,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:00:54,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:00:54,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:00:54,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (1/1) ... [2023-01-28 10:00:54,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:00:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:54,473 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 10:00:54,489 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 10:00:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:00:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:00:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:00:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:00:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:00:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:00:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:00:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:00:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:00:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:00:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:00:54,509 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 10:00:54,582 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:00:54,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:00:54,917 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:00:55,015 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:00:55,016 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 10:00:55,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:00:55 BoogieIcfgContainer [2023-01-28 10:00:55,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:00:55,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:00:55,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:00:55,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:00:55,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:00:54" (1/3) ... [2023-01-28 10:00:55,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dcc19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:00:55, skipping insertion in model container [2023-01-28 10:00:55,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:54" (2/3) ... [2023-01-28 10:00:55,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dcc19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:00:55, skipping insertion in model container [2023-01-28 10:00:55,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:00:55" (3/3) ... [2023-01-28 10:00:55,023 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2023-01-28 10:00:55,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:00:55,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:00:55,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:00:55,101 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 10:00:55,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 267 transitions, 558 flow [2023-01-28 10:00:55,232 INFO L130 PetriNetUnfolder]: 27/264 cut-off events. [2023-01-28 10:00:55,232 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:00:55,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 27/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 224. Up to 6 conditions per place. [2023-01-28 10:00:55,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 267 transitions, 558 flow [2023-01-28 10:00:55,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 254 transitions, 526 flow [2023-01-28 10:00:55,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:00:55,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 254 transitions, 526 flow [2023-01-28 10:00:55,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 254 transitions, 526 flow [2023-01-28 10:00:55,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 254 transitions, 526 flow [2023-01-28 10:00:55,295 INFO L130 PetriNetUnfolder]: 27/254 cut-off events. [2023-01-28 10:00:55,295 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:00:55,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 27/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 224. Up to 6 conditions per place. [2023-01-28 10:00:55,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 2700 [2023-01-28 10:01:02,479 INFO L134 LiptonReduction]: Checked pairs total: 2578 [2023-01-28 10:01:02,479 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-01-28 10:01:02,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:01:02,494 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;@715ae90a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:01:02,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 10:01:02,502 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2023-01-28 10:01:02,502 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:01:02,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:02,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:02,503 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 10:01:02,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1084146320, now seen corresponding path program 1 times [2023-01-28 10:01:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:02,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066793912] [2023-01-28 10:01:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:02,994 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 10:01:02,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066793912] [2023-01-28 10:01:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066793912] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:02,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:01:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173978593] [2023-01-28 10:01:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:03,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:01:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:01:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:01:03,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 544 [2023-01-28 10:01:03,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:03,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 544 [2023-01-28 10:01:03,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:03,150 INFO L130 PetriNetUnfolder]: 164/251 cut-off events. [2023-01-28 10:01:03,150 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-01-28 10:01:03,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 251 events. 164/251 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 606 event pairs, 37 based on Foata normal form. 1/161 useless extension candidates. Maximal degree in co-relation 376. Up to 167 conditions per place. [2023-01-28 10:01:03,155 INFO L137 encePairwiseOnDemand]: 539/544 looper letters, 36 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2023-01-28 10:01:03,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 197 flow [2023-01-28 10:01:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:01:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:01:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2023-01-28 10:01:03,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45955882352941174 [2023-01-28 10:01:03,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2023-01-28 10:01:03,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2023-01-28 10:01:03,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:03,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2023-01-28 10:01:03,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,191 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 3 states and 750 transitions. [2023-01-28 10:01:03,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 197 flow [2023-01-28 10:01:03,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 10:01:03,196 INFO L231 Difference]: Finished difference. Result has 26 places, 28 transitions, 82 flow [2023-01-28 10:01:03,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=28} [2023-01-28 10:01:03,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-01-28 10:01:03,201 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 28 transitions, 82 flow [2023-01-28 10:01:03,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:03,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:01:03,203 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 10:01:03,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:03,205 INFO L85 PathProgramCache]: Analyzing trace with hash 764426050, now seen corresponding path program 1 times [2023-01-28 10:01:03,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:03,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157037482] [2023-01-28 10:01:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:03,521 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 10:01:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:03,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157037482] [2023-01-28 10:01:03,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157037482] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:03,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:03,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 10:01:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187939654] [2023-01-28 10:01:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:01:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:01:03,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:01:03,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 544 [2023-01-28 10:01:03,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:03,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 544 [2023-01-28 10:01:03,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:03,605 INFO L130 PetriNetUnfolder]: 146/229 cut-off events. [2023-01-28 10:01:03,605 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-01-28 10:01:03,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 229 events. 146/229 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 557 event pairs, 37 based on Foata normal form. 14/240 useless extension candidates. Maximal degree in co-relation 175. Up to 145 conditions per place. [2023-01-28 10:01:03,606 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 34 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2023-01-28 10:01:03,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 179 flow [2023-01-28 10:01:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:01:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:01:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-01-28 10:01:03,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2023-01-28 10:01:03,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-01-28 10:01:03,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-01-28 10:01:03,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:03,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-01-28 10:01:03,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,612 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 82 flow. Second operand 3 states and 708 transitions. [2023-01-28 10:01:03,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 179 flow [2023-01-28 10:01:03,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 38 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:01:03,613 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 80 flow [2023-01-28 10:01:03,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-28 10:01:03,614 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-01-28 10:01:03,614 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 80 flow [2023-01-28 10:01:03,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:03,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:03,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:01:03,615 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 10:01:03,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1012909974, now seen corresponding path program 1 times [2023-01-28 10:01:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438203491] [2023-01-28 10:01:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:03,735 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 10:01:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438203491] [2023-01-28 10:01:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438203491] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:03,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:01:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4421980] [2023-01-28 10:01:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:01:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:01:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:01:03,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 544 [2023-01-28 10:01:03,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:03,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 544 [2023-01-28 10:01:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:03,845 INFO L130 PetriNetUnfolder]: 263/429 cut-off events. [2023-01-28 10:01:03,845 INFO L131 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2023-01-28 10:01:03,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 429 events. 263/429 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1282 event pairs, 174 based on Foata normal form. 28/451 useless extension candidates. Maximal degree in co-relation 350. Up to 230 conditions per place. [2023-01-28 10:01:03,847 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 48 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-01-28 10:01:03,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 51 transitions, 246 flow [2023-01-28 10:01:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 841 transitions. [2023-01-28 10:01:03,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864889705882353 [2023-01-28 10:01:03,849 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 841 transitions. [2023-01-28 10:01:03,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 841 transitions. [2023-01-28 10:01:03,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:03,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 841 transitions. [2023-01-28 10:01:03,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,854 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,854 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 80 flow. Second operand 4 states and 841 transitions. [2023-01-28 10:01:03,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 51 transitions, 246 flow [2023-01-28 10:01:03,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 51 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:01:03,856 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 96 flow [2023-01-28 10:01:03,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-01-28 10:01:03,857 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-01-28 10:01:03,857 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 96 flow [2023-01-28 10:01:03,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:03,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 10:01:03,858 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 10:01:03,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:03,858 INFO L85 PathProgramCache]: Analyzing trace with hash 305019443, now seen corresponding path program 1 times [2023-01-28 10:01:03,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678919714] [2023-01-28 10:01:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:03,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:03,992 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 10:01:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:03,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678919714] [2023-01-28 10:01:03,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678919714] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:03,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:03,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:01:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339300146] [2023-01-28 10:01:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:03,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:01:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:01:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:01:03,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 544 [2023-01-28 10:01:03,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:03,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:03,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 544 [2023-01-28 10:01:03,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:04,099 INFO L130 PetriNetUnfolder]: 261/441 cut-off events. [2023-01-28 10:01:04,099 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-28 10:01:04,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 441 events. 261/441 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1364 event pairs, 114 based on Foata normal form. 44/480 useless extension candidates. Maximal degree in co-relation 884. Up to 253 conditions per place. [2023-01-28 10:01:04,101 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 49 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-01-28 10:01:04,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 272 flow [2023-01-28 10:01:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 959 transitions. [2023-01-28 10:01:04,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407169117647059 [2023-01-28 10:01:04,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 959 transitions. [2023-01-28 10:01:04,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 959 transitions. [2023-01-28 10:01:04,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:04,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 959 transitions. [2023-01-28 10:01:04,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:04,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:04,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:04,111 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 96 flow. Second operand 4 states and 959 transitions. [2023-01-28 10:01:04,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 272 flow [2023-01-28 10:01:04,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 262 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 10:01:04,114 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 104 flow [2023-01-28 10:01:04,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-01-28 10:01:04,115 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2023-01-28 10:01:04,116 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 104 flow [2023-01-28 10:01:04,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:04,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:04,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:04,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:01:04,116 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 10:01:04,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1752549565, now seen corresponding path program 1 times [2023-01-28 10:01:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572231446] [2023-01-28 10:01:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572231446] [2023-01-28 10:01:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572231446] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157355485] [2023-01-28 10:01:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:04,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:04,325 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 10:01:04,327 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 10:01:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:04,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 10:01:04,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:04,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:04,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157355485] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:04,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:04,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-01-28 10:01:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188767455] [2023-01-28 10:01:04,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:01:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:01:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 10:01:04,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 544 [2023-01-28 10:01:04,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:04,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:04,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 544 [2023-01-28 10:01:04,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:05,022 INFO L130 PetriNetUnfolder]: 270/435 cut-off events. [2023-01-28 10:01:05,023 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-01-28 10:01:05,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 435 events. 270/435 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1355 event pairs, 53 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1108. Up to 281 conditions per place. [2023-01-28 10:01:05,024 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 42 selfloop transitions, 4 changer transitions 3/49 dead transitions. [2023-01-28 10:01:05,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 256 flow [2023-01-28 10:01:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 971 transitions. [2023-01-28 10:01:05,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462316176470588 [2023-01-28 10:01:05,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 971 transitions. [2023-01-28 10:01:05,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 971 transitions. [2023-01-28 10:01:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 971 transitions. [2023-01-28 10:01:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:05,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:05,032 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:05,032 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 104 flow. Second operand 4 states and 971 transitions. [2023-01-28 10:01:05,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 256 flow [2023-01-28 10:01:05,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 10:01:05,036 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 129 flow [2023-01-28 10:01:05,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-01-28 10:01:05,037 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-01-28 10:01:05,037 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 129 flow [2023-01-28 10:01:05,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:05,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:05,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:05,047 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 10:01:05,244 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 10:01:05,244 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 10:01:05,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 583728145, now seen corresponding path program 2 times [2023-01-28 10:01:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127815704] [2023-01-28 10:01:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127815704] [2023-01-28 10:01:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127815704] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:05,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365061383] [2023-01-28 10:01:05,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:01:05,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:05,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:05,536 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 10:01:05,566 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 10:01:05,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:01:05,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:01:05,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 10:01:05,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:05,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:06,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:06,195 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 266 treesize of output 272 [2023-01-28 10:01:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365061383] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:06,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:06,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 10:01:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858761864] [2023-01-28 10:01:06,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:06,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 10:01:06,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 10:01:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-01-28 10:01:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 544 [2023-01-28 10:01:06,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 129 flow. Second operand has 13 states, 13 states have (on average 181.46153846153845) internal successors, (2359), 13 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:06,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:06,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 544 [2023-01-28 10:01:06,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:06,900 INFO L130 PetriNetUnfolder]: 437/748 cut-off events. [2023-01-28 10:01:06,900 INFO L131 PetriNetUnfolder]: For 580/580 co-relation queries the response was YES. [2023-01-28 10:01:06,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 748 events. 437/748 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2956 event pairs, 125 based on Foata normal form. 56/798 useless extension candidates. Maximal degree in co-relation 1921. Up to 196 conditions per place. [2023-01-28 10:01:06,903 INFO L137 encePairwiseOnDemand]: 535/544 looper letters, 66 selfloop transitions, 12 changer transitions 21/99 dead transitions. [2023-01-28 10:01:06,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 99 transitions, 516 flow [2023-01-28 10:01:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:01:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:01:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1691 transitions. [2023-01-28 10:01:06,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34538398692810457 [2023-01-28 10:01:06,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1691 transitions. [2023-01-28 10:01:06,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1691 transitions. [2023-01-28 10:01:06,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:06,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1691 transitions. [2023-01-28 10:01:06,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.88888888888889) internal successors, (1691), 9 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:06,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 544.0) internal successors, (5440), 10 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:06,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 544.0) internal successors, (5440), 10 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:06,917 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 129 flow. Second operand 9 states and 1691 transitions. [2023-01-28 10:01:06,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 99 transitions, 516 flow [2023-01-28 10:01:06,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 502 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 10:01:06,920 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 196 flow [2023-01-28 10:01:06,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-01-28 10:01:06,921 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-01-28 10:01:06,922 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 196 flow [2023-01-28 10:01:06,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.46153846153845) internal successors, (2359), 13 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:06,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:06,923 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 10:01:06,931 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 10:01:07,127 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 10:01:07,128 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 10:01:07,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1837674817, now seen corresponding path program 1 times [2023-01-28 10:01:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:07,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111514588] [2023-01-28 10:01:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:07,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111514588] [2023-01-28 10:01:07,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111514588] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808519588] [2023-01-28 10:01:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:07,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:07,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:07,799 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 10:01:07,801 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 10:01:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:07,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 10:01:07,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:08,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:09,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:09,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 354 treesize of output 458 [2023-01-28 10:01:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808519588] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:13,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-01-28 10:01:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943176750] [2023-01-28 10:01:13,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:13,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 10:01:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 10:01:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-01-28 10:01:13,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 544 [2023-01-28 10:01:13,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 196 flow. Second operand has 17 states, 17 states have (on average 158.47058823529412) internal successors, (2694), 17 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:13,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:13,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 544 [2023-01-28 10:01:13,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:14,012 INFO L130 PetriNetUnfolder]: 980/1656 cut-off events. [2023-01-28 10:01:14,012 INFO L131 PetriNetUnfolder]: For 2039/2039 co-relation queries the response was YES. [2023-01-28 10:01:14,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 1656 events. 980/1656 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8028 event pairs, 222 based on Foata normal form. 6/1660 useless extension candidates. Maximal degree in co-relation 2917. Up to 479 conditions per place. [2023-01-28 10:01:14,018 INFO L137 encePairwiseOnDemand]: 537/544 looper letters, 76 selfloop transitions, 28 changer transitions 29/133 dead transitions. [2023-01-28 10:01:14,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 133 transitions, 829 flow [2023-01-28 10:01:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 10:01:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 10:01:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1978 transitions. [2023-01-28 10:01:14,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30300245098039214 [2023-01-28 10:01:14,022 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1978 transitions. [2023-01-28 10:01:14,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1978 transitions. [2023-01-28 10:01:14,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:14,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1978 transitions. [2023-01-28 10:01:14,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 164.83333333333334) internal successors, (1978), 12 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:14,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:14,032 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:14,032 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 196 flow. Second operand 12 states and 1978 transitions. [2023-01-28 10:01:14,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 133 transitions, 829 flow [2023-01-28 10:01:14,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 133 transitions, 817 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 10:01:14,036 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 454 flow [2023-01-28 10:01:14,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=454, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-01-28 10:01:14,036 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-01-28 10:01:14,036 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 454 flow [2023-01-28 10:01:14,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 158.47058823529412) internal successors, (2694), 17 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:14,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:14,037 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 10:01:14,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 10:01:14,242 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 10:01:14,243 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 10:01:14,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1641038422, now seen corresponding path program 1 times [2023-01-28 10:01:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673009691] [2023-01-28 10:01:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:14,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673009691] [2023-01-28 10:01:14,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673009691] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311569815] [2023-01-28 10:01:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:14,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:14,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:14,515 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 10:01:14,517 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 10:01:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:14,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:01:14,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:01:14,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:15,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:15,631 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 505 treesize of output 536 [2023-01-28 10:01:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:01:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311569815] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:16,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:16,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-01-28 10:01:16,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534214583] [2023-01-28 10:01:16,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:16,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 10:01:16,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:16,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 10:01:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-01-28 10:01:16,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 544 [2023-01-28 10:01:16,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 454 flow. Second operand has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:16,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:16,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 544 [2023-01-28 10:01:16,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:16,557 INFO L130 PetriNetUnfolder]: 980/1686 cut-off events. [2023-01-28 10:01:16,557 INFO L131 PetriNetUnfolder]: For 3197/3197 co-relation queries the response was YES. [2023-01-28 10:01:16,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 1686 events. 980/1686 cut-off events. For 3197/3197 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8328 event pairs, 270 based on Foata normal form. 60/1744 useless extension candidates. Maximal degree in co-relation 4593. Up to 537 conditions per place. [2023-01-28 10:01:16,563 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 57 selfloop transitions, 14 changer transitions 13/84 dead transitions. [2023-01-28 10:01:16,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 671 flow [2023-01-28 10:01:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:01:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:01:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1023 transitions. [2023-01-28 10:01:16,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761029411764706 [2023-01-28 10:01:16,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1023 transitions. [2023-01-28 10:01:16,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1023 transitions. [2023-01-28 10:01:16,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:16,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1023 transitions. [2023-01-28 10:01:16,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.6) internal successors, (1023), 5 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:16,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 544.0) internal successors, (3264), 6 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:16,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 544.0) internal successors, (3264), 6 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:16,570 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 454 flow. Second operand 5 states and 1023 transitions. [2023-01-28 10:01:16,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 671 flow [2023-01-28 10:01:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 601 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-01-28 10:01:16,575 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 385 flow [2023-01-28 10:01:16,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-01-28 10:01:16,576 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-01-28 10:01:16,576 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 385 flow [2023-01-28 10:01:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:16,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:16,577 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:16,583 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 10:01:16,781 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 10:01:16,781 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 10:01:16,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 704380673, now seen corresponding path program 2 times [2023-01-28 10:01:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:16,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000602434] [2023-01-28 10:01:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:01:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000602434] [2023-01-28 10:01:17,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000602434] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12116070] [2023-01-28 10:01:17,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:01:17,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:17,198 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 10:01:17,224 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 10:01:17,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:01:17,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:01:17,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 10:01:17,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:01:17,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:18,375 INFO L321 Elim1Store]: treesize reduction 38, result has 77.5 percent of original size [2023-01-28 10:01:18,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 550 treesize of output 600 [2023-01-28 10:01:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:01:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12116070] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:18,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-01-28 10:01:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878681924] [2023-01-28 10:01:18,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:18,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 10:01:18,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 10:01:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-01-28 10:01:18,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 544 [2023-01-28 10:01:18,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 385 flow. Second operand has 14 states, 14 states have (on average 162.85714285714286) internal successors, (2280), 14 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:18,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:18,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 544 [2023-01-28 10:01:18,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:19,832 INFO L130 PetriNetUnfolder]: 1766/3030 cut-off events. [2023-01-28 10:01:19,832 INFO L131 PetriNetUnfolder]: For 5585/5585 co-relation queries the response was YES. [2023-01-28 10:01:19,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 3030 events. 1766/3030 cut-off events. For 5585/5585 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16713 event pairs, 384 based on Foata normal form. 72/3100 useless extension candidates. Maximal degree in co-relation 7922. Up to 546 conditions per place. [2023-01-28 10:01:19,843 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 93 selfloop transitions, 34 changer transitions 64/191 dead transitions. [2023-01-28 10:01:19,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 191 transitions, 1307 flow [2023-01-28 10:01:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 10:01:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 10:01:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3025 transitions. [2023-01-28 10:01:19,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30892565359477125 [2023-01-28 10:01:19,849 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3025 transitions. [2023-01-28 10:01:19,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3025 transitions. [2023-01-28 10:01:19,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:19,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3025 transitions. [2023-01-28 10:01:19,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 168.05555555555554) internal successors, (3025), 18 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:19,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 544.0) internal successors, (10336), 19 states have internal predecessors, (10336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:19,867 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 544.0) internal successors, (10336), 19 states have internal predecessors, (10336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:19,867 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 385 flow. Second operand 18 states and 3025 transitions. [2023-01-28 10:01:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 191 transitions, 1307 flow [2023-01-28 10:01:19,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 191 transitions, 1273 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 10:01:19,877 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 589 flow [2023-01-28 10:01:19,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=589, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2023-01-28 10:01:19,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-01-28 10:01:19,878 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 589 flow [2023-01-28 10:01:19,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.85714285714286) internal successors, (2280), 14 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:19,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:19,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:19,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 10:01:20,083 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 10:01:20,087 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 10:01:20,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 712731656, now seen corresponding path program 1 times [2023-01-28 10:01:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483566129] [2023-01-28 10:01:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:20,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:20,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483566129] [2023-01-28 10:01:20,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483566129] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:20,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944307708] [2023-01-28 10:01:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:20,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:20,376 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 10:01:20,377 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 10:01:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:20,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:01:20,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:01:20,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:22,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:22,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 399 treesize of output 506 [2023-01-28 10:01:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:01:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944307708] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:23,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:23,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-28 10:01:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610141259] [2023-01-28 10:01:23,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:23,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 10:01:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 10:01:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-01-28 10:01:23,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 544 [2023-01-28 10:01:23,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 589 flow. Second operand has 16 states, 16 states have (on average 165.125) internal successors, (2642), 16 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:23,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:23,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 544 [2023-01-28 10:01:23,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:24,282 INFO L130 PetriNetUnfolder]: 1822/3231 cut-off events. [2023-01-28 10:01:24,282 INFO L131 PetriNetUnfolder]: For 8771/8771 co-relation queries the response was YES. [2023-01-28 10:01:24,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 3231 events. 1822/3231 cut-off events. For 8771/8771 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19039 event pairs, 414 based on Foata normal form. 196/3427 useless extension candidates. Maximal degree in co-relation 8393. Up to 602 conditions per place. [2023-01-28 10:01:24,293 INFO L137 encePairwiseOnDemand]: 538/544 looper letters, 96 selfloop transitions, 28 changer transitions 48/172 dead transitions. [2023-01-28 10:01:24,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 172 transitions, 1342 flow [2023-01-28 10:01:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:01:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:01:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2230 transitions. [2023-01-28 10:01:24,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153280542986425 [2023-01-28 10:01:24,298 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2230 transitions. [2023-01-28 10:01:24,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2230 transitions. [2023-01-28 10:01:24,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:24,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2230 transitions. [2023-01-28 10:01:24,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 171.53846153846155) internal successors, (2230), 13 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:24,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 544.0) internal successors, (7616), 14 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:24,307 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 544.0) internal successors, (7616), 14 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:24,307 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 589 flow. Second operand 13 states and 2230 transitions. [2023-01-28 10:01:24,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 172 transitions, 1342 flow [2023-01-28 10:01:24,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 172 transitions, 1220 flow, removed 37 selfloop flow, removed 9 redundant places. [2023-01-28 10:01:24,324 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 525 flow [2023-01-28 10:01:24,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=525, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-01-28 10:01:24,324 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-01-28 10:01:24,325 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 525 flow [2023-01-28 10:01:24,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 165.125) internal successors, (2642), 16 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:24,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:24,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:24,332 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 10:01:24,530 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 10:01:24,530 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 10:01:24,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash 998744017, now seen corresponding path program 1 times [2023-01-28 10:01:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523785581] [2023-01-28 10:01:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:26,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:26,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523785581] [2023-01-28 10:01:26,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523785581] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:26,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335911164] [2023-01-28 10:01:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:26,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:26,506 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 10:01:26,507 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 10:01:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:26,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 10:01:26,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:01:26,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:28,689 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:28,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 410 treesize of output 581 [2023-01-28 10:01:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:01:31,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335911164] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:31,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:31,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 17 [2023-01-28 10:01:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21326775] [2023-01-28 10:01:31,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:31,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 10:01:31,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 10:01:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-01-28 10:01:31,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 544 [2023-01-28 10:01:31,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 525 flow. Second operand has 19 states, 19 states have (on average 151.89473684210526) internal successors, (2886), 19 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:31,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:31,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 544 [2023-01-28 10:01:31,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:33,018 INFO L130 PetriNetUnfolder]: 1834/3147 cut-off events. [2023-01-28 10:01:33,019 INFO L131 PetriNetUnfolder]: For 6399/6399 co-relation queries the response was YES. [2023-01-28 10:01:33,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 3147 events. 1834/3147 cut-off events. For 6399/6399 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17578 event pairs, 293 based on Foata normal form. 9/3156 useless extension candidates. Maximal degree in co-relation 8225. Up to 847 conditions per place. [2023-01-28 10:01:33,048 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 75 selfloop transitions, 51 changer transitions 43/169 dead transitions. [2023-01-28 10:01:33,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 169 transitions, 1303 flow [2023-01-28 10:01:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 10:01:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 10:01:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2657 transitions. [2023-01-28 10:01:33,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873053633217993 [2023-01-28 10:01:33,054 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2657 transitions. [2023-01-28 10:01:33,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2657 transitions. [2023-01-28 10:01:33,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:33,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2657 transitions. [2023-01-28 10:01:33,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 156.2941176470588) internal successors, (2657), 17 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:33,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 544.0) internal successors, (9792), 18 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:33,066 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 544.0) internal successors, (9792), 18 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:33,066 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 525 flow. Second operand 17 states and 2657 transitions. [2023-01-28 10:01:33,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 169 transitions, 1303 flow [2023-01-28 10:01:33,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 169 transitions, 1247 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 10:01:33,077 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 850 flow [2023-01-28 10:01:33,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=850, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-01-28 10:01:33,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2023-01-28 10:01:33,077 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 850 flow [2023-01-28 10:01:33,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 151.89473684210526) internal successors, (2886), 19 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:33,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:33,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:33,101 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 10:01:33,283 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 10:01:33,284 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 10:01:33,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -230445003, now seen corresponding path program 1 times [2023-01-28 10:01:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113497601] [2023-01-28 10:01:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:34,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113497601] [2023-01-28 10:01:34,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113497601] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755238310] [2023-01-28 10:01:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:34,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:34,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:34,339 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 10:01:34,346 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 10:01:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:34,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 10:01:34,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:34,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 10:01:34,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:01:34,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:01:34,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:01:35,150 INFO L321 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2023-01-28 10:01:35,150 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 125 treesize of output 104 [2023-01-28 10:01:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:01:35,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:50,809 WARN L222 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 119 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 10:01:52,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:52,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 51 [2023-01-28 10:01:52,873 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-28 10:01:52,873 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 6774 treesize of output 6246 [2023-01-28 10:01:53,065 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:53,067 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 1550 treesize of output 1463 [2023-01-28 10:01:53,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:53,093 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 1446 treesize of output 1255 [2023-01-28 10:01:53,124 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:53,125 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 1238 treesize of output 839 [2023-01-28 10:01:53,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:53,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2023-01-28 10:01:53,977 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 10:01:53,977 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 398 treesize of output 369 [2023-01-28 10:01:53,990 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:01:53,990 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 178 treesize of output 130 [2023-01-28 10:01:53,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:01:53,996 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 59 treesize of output 47 [2023-01-28 10:01:54,004 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:01:54,005 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 70 treesize of output 46 [2023-01-28 10:01:54,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:54,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2023-01-28 10:01:54,059 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 10:01:54,060 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 806 treesize of output 745 [2023-01-28 10:01:54,075 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:01:54,076 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 83 treesize of output 59 [2023-01-28 10:01:54,084 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:01:54,084 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 59 treesize of output 47 [2023-01-28 10:01:54,112 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:01:54,112 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 42 [2023-01-28 10:01:54,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:54,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 89 [2023-01-28 10:01:54,175 INFO L321 Elim1Store]: treesize reduction 14, result has 72.0 percent of original size [2023-01-28 10:01:54,176 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 3372 treesize of output 3143 [2023-01-28 10:01:54,216 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:01:54,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:54,228 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 3108 treesize of output 2941 [2023-01-28 10:01:54,269 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:01:54,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:54,281 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 2908 treesize of output 2141 [2023-01-28 10:01:54,345 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:01:54,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:54,358 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 2108 treesize of output 1741 [2023-01-28 10:01:59,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:59,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 51 [2023-01-28 10:01:59,116 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-01-28 10:01:59,117 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 6774 treesize of output 6246 [2023-01-28 10:01:59,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:59,295 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 1550 treesize of output 1359 [2023-01-28 10:01:59,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:59,320 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 1342 treesize of output 1255 [2023-01-28 10:01:59,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:59,345 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 1238 treesize of output 839 [2023-01-28 10:02:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:00,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755238310] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:00,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:00,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-01-28 10:02:00,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305130290] [2023-01-28 10:02:00,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:00,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:02:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:02:00,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=715, Unknown=8, NotChecked=0, Total=870 [2023-01-28 10:02:00,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 544 [2023-01-28 10:02:00,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 850 flow. Second operand has 30 states, 30 states have (on average 132.5) internal successors, (3975), 30 states have internal predecessors, (3975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:00,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:00,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 544 [2023-01-28 10:02:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:03,463 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse15 (= c_~node_state~0 1)) (.cse37 (select |c_#memory_int| c_~manager~0.base)) (.cse34 (select |c_#memory_int| c_~node~0.base)) (.cse36 (+ (* c_~node_front~0 4) c_~node~0.offset)) (.cse5 (= c_~node_state~0 0))) (let ((.cse30 (not .cse5)) (.cse31 (= c_~update~0 (select .cse34 .cse36))) (.cse38 (not (= (select .cse37 (+ c_~manager~0.offset (* c_~manager_back~0 4))) c_~ok~0))) (.cse39 (<= c_~manager_size~0 c_~manager_back~0)) (.cse40 (not (= (mod c_~safe~0 256) 0))) (.cse14 (not .cse15)) (.cse20 (< c_~node_front~0 0)) (.cse41 (<= c_~node_size~0 c_~node_front~0)) (.cse42 (<= c_~node_back~0 c_~node_front~0))) (let ((.cse21 (<= (+ c_~node_back~0 1) c_~node_front~0)) (.cse4 (+ (* c_~node_back~0 4) c_~node~0.offset)) (.cse17 (= c_~manager_state~0 1)) (.cse10 (or .cse20 .cse41 .cse42)) (.cse29 (or .cse38 (< c_~manager_back~0 0) .cse39 .cse40 .cse14)) (.cse25 (or .cse30 .cse20 .cse41 .cse31 .cse42)) (.cse32 (or .cse15 .cse40 .cse5)) (.cse28 (= 2 c_~manager_state~0)) (.cse18 (= c_~manager_state~0 0))) (let ((.cse7 (not .cse18)) (.cse22 (<= c_~manager_back~0 c_~manager_front~0)) (.cse24 (and (or .cse15 .cse5) (or .cse38 .cse39 .cse14))) (.cse23 (select .cse37 (+ (* 4 c_~manager_front~0) c_~manager~0.offset))) (.cse26 (< c_~manager_front~0 0)) (.cse27 (<= c_~manager_size~0 c_~manager_front~0)) (.cse9 (not .cse28)) (.cse1 (and .cse29 .cse25 .cse32)) (.cse0 (= 3 c_~manager_state~0)) (.cse19 (and .cse10 .cse5)) (.cse6 (< c_~node_back~0 0)) (.cse33 (not .cse17)) (.cse8 (<= c_~node_size~0 c_~node_back~0)) (.cse2 (or .cse20 .cse21 (forall ((v_ArrVal_533 (Array Int Int))) (let ((.cse35 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_533) c_~node~0.base))) (= (select .cse35 .cse4) (select .cse35 .cse36))))))) (and (or (not (= (select (select |c_#memory_int| c_~client~0.base) (+ (* c_~client_back~0 4) c_~client~0.offset)) c_~ok~0)) (< c_~client_back~0 0) (not .cse0) .cse1 (<= c_~client_size~0 c_~client_back~0)) (or (and .cse2 (or (forall ((~manager~0.base Int) (v_~manager_front~0_120 Int) (v_ArrVal_533 (Array Int Int)) (~manager~0.offset Int)) (or (< v_~manager_front~0_120 1) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_533))) (= (select (select .cse3 c_~node~0.base) .cse4) (select (select .cse3 ~manager~0.base) (+ ~manager~0.offset (- 4) (* v_~manager_front~0_120 4))))))) .cse5)) .cse6 .cse7 .cse8) (or .cse9 (and .cse10 (or (forall ((~manager~0.base Int) (v_~client_back~0_115 Int) (~manager_back~0 Int) (~client~0.base Int) (~client~0.offset Int) (v_~manager_front~0_120 Int) (v_ArrVal_533 (Array Int Int)) (~manager~0.offset Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_533))) (let ((.cse11 (select .cse13 ~manager~0.base)) (.cse12 (select (select .cse13 ~client~0.base) (+ (* v_~client_back~0_115 4) ~client~0.offset)))) (or (< v_~manager_front~0_120 1) (<= (+ ~manager_back~0 1) v_~manager_front~0_120) (not (= (select .cse11 (+ ~manager~0.offset (* ~manager_back~0 4))) .cse12)) (< v_~client_back~0_115 0) (= (select .cse11 (+ ~manager~0.offset (- 4) (* v_~manager_front~0_120 4))) .cse12))))) .cse14) (or .cse15 (forall ((v_~client_back~0_115 Int) (~manager~0.base Int) (~client~0.base Int) (~client~0.offset Int) (v_~manager_front~0_120 Int) (v_ArrVal_533 (Array Int Int)) (~manager~0.offset Int)) (or (< v_~manager_front~0_120 1) (< v_~client_back~0_115 0) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_533))) (= (select (select .cse16 ~manager~0.base) (+ ~manager~0.offset (- 4) (* v_~manager_front~0_120 4))) (select (select .cse16 ~client~0.base) (+ (* v_~client_back~0_115 4) ~client~0.offset)))))) .cse5))) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (and (or .cse17 .cse18 .cse19) (or .cse6 (and (or .cse20 .cse21 (= c_~node_front~0 c_~node_back~0)) .cse5) .cse8))) (or .cse22 (and (or (= c_~update~0 .cse23) .cse24) .cse25) .cse7 .cse26 .cse27) (or .cse17 .cse18) .cse5 (or .cse17 .cse18 (and (or .cse22 (and .cse25 (or .cse24 (= c_~ok~0 .cse23))) .cse26 .cse27 .cse9) (or .cse1 .cse28 .cse0))) (or (and .cse29 (or .cse30 .cse20 .cse21 .cse31) .cse32) .cse6 .cse33 (not (= (select .cse34 .cse4) c_~update~0)) .cse8) (or .cse17 .cse18 .cse19 .cse28) (or .cse6 .cse33 .cse8 (and .cse2 .cse5))))))) is different from false [2023-01-28 10:02:05,735 INFO L130 PetriNetUnfolder]: 5380/9173 cut-off events. [2023-01-28 10:02:05,735 INFO L131 PetriNetUnfolder]: For 26237/26237 co-relation queries the response was YES. [2023-01-28 10:02:05,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30650 conditions, 9173 events. 5380/9173 cut-off events. For 26237/26237 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 62931 event pairs, 779 based on Foata normal form. 15/9188 useless extension candidates. Maximal degree in co-relation 23991. Up to 2269 conditions per place. [2023-01-28 10:02:05,787 INFO L137 encePairwiseOnDemand]: 526/544 looper letters, 187 selfloop transitions, 135 changer transitions 114/436 dead transitions. [2023-01-28 10:02:05,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 436 transitions, 3733 flow [2023-01-28 10:02:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-28 10:02:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-28 10:02:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5663 transitions. [2023-01-28 10:02:05,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2539006456241033 [2023-01-28 10:02:05,802 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5663 transitions. [2023-01-28 10:02:05,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5663 transitions. [2023-01-28 10:02:05,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:05,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5663 transitions. [2023-01-28 10:02:05,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 138.1219512195122) internal successors, (5663), 41 states have internal predecessors, (5663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:05,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 544.0) internal successors, (22848), 42 states have internal predecessors, (22848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:05,830 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 544.0) internal successors, (22848), 42 states have internal predecessors, (22848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:05,830 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 850 flow. Second operand 41 states and 5663 transitions. [2023-01-28 10:02:05,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 436 transitions, 3733 flow [2023-01-28 10:02:05,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 436 transitions, 3477 flow, removed 113 selfloop flow, removed 4 redundant places. [2023-01-28 10:02:05,903 INFO L231 Difference]: Finished difference. Result has 141 places, 190 transitions, 2428 flow [2023-01-28 10:02:05,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2428, PETRI_PLACES=141, PETRI_TRANSITIONS=190} [2023-01-28 10:02:05,903 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2023-01-28 10:02:05,904 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 190 transitions, 2428 flow [2023-01-28 10:02:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 132.5) internal successors, (3975), 30 states have internal predecessors, (3975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:05,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:05,904 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:02:05,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 10:02:06,109 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 10:02:06,109 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 10:02:06,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1736138213, now seen corresponding path program 2 times [2023-01-28 10:02:06,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930095272] [2023-01-28 10:02:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:02:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930095272] [2023-01-28 10:02:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930095272] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174279813] [2023-01-28 10:02:06,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:02:06,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:06,769 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 10:02:06,807 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 10:02:06,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:02:06,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:02:06,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 10:02:06,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:07,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:15,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:02:15,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 603 treesize of output 1120 [2023-01-28 10:02:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:02:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174279813] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:39,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-01-28 10:02:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068605946] [2023-01-28 10:02:39,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 10:02:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 10:02:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2023-01-28 10:02:39,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 544 [2023-01-28 10:02:39,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 190 transitions, 2428 flow. Second operand has 24 states, 24 states have (on average 151.66666666666666) internal successors, (3640), 24 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:02:39,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:39,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 544 [2023-01-28 10:02:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:03:24,017 WARN L222 SmtUtils]: Spent 38.29s on a formula simplification. DAG size of input: 179 DAG size of output: 149 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 10:03:41,257 WARN L222 SmtUtils]: Spent 17.00s on a formula simplification. DAG size of input: 113 DAG size of output: 110 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 10:03:43,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:03:45,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:03:46,716 INFO L130 PetriNetUnfolder]: 4719/8247 cut-off events. [2023-01-28 10:03:46,716 INFO L131 PetriNetUnfolder]: For 33561/33561 co-relation queries the response was YES. [2023-01-28 10:03:46,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34453 conditions, 8247 events. 4719/8247 cut-off events. For 33561/33561 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 56933 event pairs, 762 based on Foata normal form. 160/8407 useless extension candidates. Maximal degree in co-relation 33840. Up to 4848 conditions per place. [2023-01-28 10:03:46,821 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 203 selfloop transitions, 135 changer transitions 103/441 dead transitions. [2023-01-28 10:03:46,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 441 transitions, 4336 flow [2023-01-28 10:03:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 10:03:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 10:03:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5084 transitions. [2023-01-28 10:03:46,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2920496323529412 [2023-01-28 10:03:46,835 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5084 transitions. [2023-01-28 10:03:46,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5084 transitions. [2023-01-28 10:03:46,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:03:46,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5084 transitions. [2023-01-28 10:03:46,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 158.875) internal successors, (5084), 32 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:46,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 544.0) internal successors, (17952), 33 states have internal predecessors, (17952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:46,867 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 544.0) internal successors, (17952), 33 states have internal predecessors, (17952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:46,867 INFO L175 Difference]: Start difference. First operand has 141 places, 190 transitions, 2428 flow. Second operand 32 states and 5084 transitions. [2023-01-28 10:03:46,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 441 transitions, 4336 flow [2023-01-28 10:03:47,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 441 transitions, 3984 flow, removed 130 selfloop flow, removed 13 redundant places. [2023-01-28 10:03:47,020 INFO L231 Difference]: Finished difference. Result has 162 places, 188 transitions, 2384 flow [2023-01-28 10:03:47,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2384, PETRI_PLACES=162, PETRI_TRANSITIONS=188} [2023-01-28 10:03:47,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2023-01-28 10:03:47,021 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 188 transitions, 2384 flow [2023-01-28 10:03:47,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 151.66666666666666) internal successors, (3640), 24 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:03:47,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:03:47,022 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:03:47,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 10:03:47,228 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 10:03:47,229 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 10:03:47,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:03:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1576090582, now seen corresponding path program 3 times [2023-01-28 10:03:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:03:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365871927] [2023-01-28 10:03:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:03:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:03:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:03:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:03:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:03:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365871927] [2023-01-28 10:03:48,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365871927] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:03:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585022915] [2023-01-28 10:03:48,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:03:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:03:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:03:48,462 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 10:03:48,504 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 10:03:48,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:03:48,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:03:48,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 10:03:48,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:03:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:03:49,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:03:52,169 INFO L321 Elim1Store]: treesize reduction 122, result has 73.2 percent of original size [2023-01-28 10:03:52,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 897 treesize of output 1054 [2023-01-28 10:04:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:04:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585022915] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:04:51,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:04:51,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 20 [2023-01-28 10:04:51,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052661527] [2023-01-28 10:04:51,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:04:51,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:04:51,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:04:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:04:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-01-28 10:04:51,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 544 [2023-01-28 10:04:51,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 188 transitions, 2384 flow. Second operand has 22 states, 22 states have (on average 149.5) internal successors, (3289), 22 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:51,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:04:51,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 544 [2023-01-28 10:04:51,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:04:53,657 INFO L130 PetriNetUnfolder]: 6482/11164 cut-off events. [2023-01-28 10:04:53,657 INFO L131 PetriNetUnfolder]: For 55559/55559 co-relation queries the response was YES. [2023-01-28 10:04:53,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48201 conditions, 11164 events. 6482/11164 cut-off events. For 55559/55559 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 79360 event pairs, 1165 based on Foata normal form. 11/11164 useless extension candidates. Maximal degree in co-relation 46192. Up to 6463 conditions per place. [2023-01-28 10:04:53,710 INFO L137 encePairwiseOnDemand]: 533/544 looper letters, 156 selfloop transitions, 176 changer transitions 61/393 dead transitions. [2023-01-28 10:04:53,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 393 transitions, 4784 flow [2023-01-28 10:04:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 10:04:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 10:04:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3711 transitions. [2023-01-28 10:04:53,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2842371323529412 [2023-01-28 10:04:53,713 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3711 transitions. [2023-01-28 10:04:53,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3711 transitions. [2023-01-28 10:04:53,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:04:53,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3711 transitions. [2023-01-28 10:04:53,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 154.625) internal successors, (3711), 24 states have internal predecessors, (3711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:53,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 544.0) internal successors, (13600), 25 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:53,723 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 544.0) internal successors, (13600), 25 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:53,723 INFO L175 Difference]: Start difference. First operand has 162 places, 188 transitions, 2384 flow. Second operand 24 states and 3711 transitions. [2023-01-28 10:04:53,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 393 transitions, 4784 flow [2023-01-28 10:04:53,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 393 transitions, 4324 flow, removed 166 selfloop flow, removed 10 redundant places. [2023-01-28 10:04:53,920 INFO L231 Difference]: Finished difference. Result has 179 places, 234 transitions, 3203 flow [2023-01-28 10:04:53,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3203, PETRI_PLACES=179, PETRI_TRANSITIONS=234} [2023-01-28 10:04:53,921 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2023-01-28 10:04:53,921 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 234 transitions, 3203 flow [2023-01-28 10:04:53,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 149.5) internal successors, (3289), 22 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:53,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:04:53,921 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:04:53,941 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 10:04:54,127 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 10:04:54,127 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 10:04:54,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:04:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash -965021291, now seen corresponding path program 4 times [2023-01-28 10:04:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:04:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728973623] [2023-01-28 10:04:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:04:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:04:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:04:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:04:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:04:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728973623] [2023-01-28 10:04:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728973623] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:04:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969716919] [2023-01-28 10:04:54,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:04:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:04:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:04:54,493 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 10:04:54,497 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 10:04:54,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:04:54,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:04:54,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 10:04:54,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:04:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:04:54,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:04:55,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:04:55,425 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 248 treesize of output 254 [2023-01-28 10:04:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:04:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969716919] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:04:55,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:04:55,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-01-28 10:04:55,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457386712] [2023-01-28 10:04:55,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:04:55,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 10:04:55,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:04:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 10:04:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-01-28 10:04:55,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 544 [2023-01-28 10:04:55,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 234 transitions, 3203 flow. Second operand has 18 states, 18 states have (on average 159.72222222222223) internal successors, (2875), 18 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:55,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:04:55,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 544 [2023-01-28 10:04:55,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:04:58,080 INFO L130 PetriNetUnfolder]: 7894/13459 cut-off events. [2023-01-28 10:04:58,080 INFO L131 PetriNetUnfolder]: For 62192/62192 co-relation queries the response was YES. [2023-01-28 10:04:58,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58511 conditions, 13459 events. 7894/13459 cut-off events. For 62192/62192 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 96885 event pairs, 3986 based on Foata normal form. 156/13608 useless extension candidates. Maximal degree in co-relation 56754. Up to 7723 conditions per place. [2023-01-28 10:04:58,140 INFO L137 encePairwiseOnDemand]: 538/544 looper letters, 231 selfloop transitions, 44 changer transitions 54/329 dead transitions. [2023-01-28 10:04:58,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 329 transitions, 4603 flow [2023-01-28 10:04:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:04:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:04:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1823 transitions. [2023-01-28 10:04:58,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046457219251337 [2023-01-28 10:04:58,143 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1823 transitions. [2023-01-28 10:04:58,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1823 transitions. [2023-01-28 10:04:58,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:04:58,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1823 transitions. [2023-01-28 10:04:58,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 165.72727272727272) internal successors, (1823), 11 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:58,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 544.0) internal successors, (6528), 12 states have internal predecessors, (6528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:58,147 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 544.0) internal successors, (6528), 12 states have internal predecessors, (6528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:58,147 INFO L175 Difference]: Start difference. First operand has 179 places, 234 transitions, 3203 flow. Second operand 11 states and 1823 transitions. [2023-01-28 10:04:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 329 transitions, 4603 flow [2023-01-28 10:04:58,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 329 transitions, 4276 flow, removed 60 selfloop flow, removed 12 redundant places. [2023-01-28 10:04:58,464 INFO L231 Difference]: Finished difference. Result has 180 places, 216 transitions, 2805 flow [2023-01-28 10:04:58,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2805, PETRI_PLACES=180, PETRI_TRANSITIONS=216} [2023-01-28 10:04:58,465 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2023-01-28 10:04:58,465 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 216 transitions, 2805 flow [2023-01-28 10:04:58,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 159.72222222222223) internal successors, (2875), 18 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:04:58,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:04:58,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:04:58,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 10:04:58,670 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 10:04:58,671 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 10:04:58,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:04:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -605202817, now seen corresponding path program 5 times [2023-01-28 10:04:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:04:58,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919805365] [2023-01-28 10:04:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:04:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:04:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:05:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:05:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:05:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919805365] [2023-01-28 10:05:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919805365] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:05:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316869166] [2023-01-28 10:05:00,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:05:00,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:05:00,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:05:00,224 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 10:05:00,251 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 10:05:00,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 10:05:00,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:05:00,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 10:05:00,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:05:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:05:01,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:05:15,097 WARN L222 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 795 DAG size of output: 675 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-01-28 10:05:15,099 INFO L321 Elim1Store]: treesize reduction 440, result has 84.9 percent of original size [2023-01-28 10:05:15,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 991 treesize of output 3162 [2023-01-28 10:08:31,736 WARN L222 SmtUtils]: Spent 9.08s on a formula simplification. DAG size of input: 523 DAG size of output: 573 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 10:08:40,417 WARN L222 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 516 DAG size of output: 540 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 10:10:09,210 WARN L222 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 507 DAG size of output: 537 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 10:14:53,093 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 10:14:53,095 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 10:14:53,102 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 10:14:53,128 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:14:53,129 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 10:14:53,302 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 10:14:53,303 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. [2023-01-28 10:14:53,304 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 10:14:53,304 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 10:14:53,304 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 10:14:53,304 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:14:53,306 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 10:14:53,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 10:14:53,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:14:53 BasicIcfg [2023-01-28 10:14:53,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 10:14:53,308 INFO L158 Benchmark]: Toolchain (without parser) took 839097.06ms. Allocated memory was 373.3MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 333.8MB in the beginning and 1.1GB in the end (delta: -746.7MB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2023-01-28 10:14:53,308 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 373.3MB. Free memory is still 323.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:14:53,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.08ms. Allocated memory is still 373.3MB. Free memory was 333.8MB in the beginning and 320.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 10:14:53,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.78ms. Allocated memory is still 373.3MB. Free memory was 320.7MB in the beginning and 318.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:14:53,309 INFO L158 Benchmark]: Boogie Preprocessor took 24.43ms. Allocated memory is still 373.3MB. Free memory was 318.1MB in the beginning and 316.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:14:53,309 INFO L158 Benchmark]: RCFGBuilder took 567.01ms. Allocated memory is still 373.3MB. Free memory was 316.0MB in the beginning and 266.7MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. [2023-01-28 10:14:53,309 INFO L158 Benchmark]: TraceAbstraction took 838289.12ms. Allocated memory was 373.3MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 266.2MB in the beginning and 1.1GB in the end (delta: -814.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-01-28 10:14:53,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 373.3MB. Free memory is still 323.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 184.08ms. Allocated memory is still 373.3MB. Free memory was 333.8MB in the beginning and 320.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.78ms. Allocated memory is still 373.3MB. Free memory was 320.7MB in the beginning and 318.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.43ms. Allocated memory is still 373.3MB. Free memory was 318.1MB in the beginning and 316.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 567.01ms. Allocated memory is still 373.3MB. Free memory was 316.0MB in the beginning and 266.7MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. * TraceAbstraction took 838289.12ms. Allocated memory was 373.3MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 266.2MB in the beginning and 1.1GB in the end (delta: -814.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 237 PlacesBefore, 29 PlacesAfterwards, 254 TransitionsBefore, 25 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 8 FixpointIterations, 163 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 12 ConcurrentYvCompositions, 21 ChoiceCompositions, 277 TotalNumberOfCompositions, 2578 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2551, independent: 2539, independent conditional: 0, independent unconditional: 2539, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1493, independent: 1489, independent conditional: 0, independent unconditional: 1489, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2551, independent: 1050, independent conditional: 0, independent unconditional: 1050, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 1493, unknown conditional: 0, unknown unconditional: 1493] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - TimeoutResultAtElement [Line: 154]: 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 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - TimeoutResultAtElement [Line: 155]: 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 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - TimeoutResultAtElement [Line: 156]: 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 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 29ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 281 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: 838.2s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 84.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 86 mSolverCounterUnknown, 3430 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3430 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 144 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 224 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5459 IncrementalHoareTripleChecker+Invalid, 5913 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 224 mSolverCounterUnsat, 0 mSDtfsCounter, 5459 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 706 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 288 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 88.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3203occurred in iteration=14, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 146.8s InterpolantComputationTime, 609 NumberOfCodeBlocks, 609 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 837 ConstructedInterpolants, 33 QuantifiedInterpolants, 24670 SizeOfPredicates, 459 NumberOfNonLiveVariables, 3453 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 37 InterpolantComputations, 4 PerfectInterpolantSequences, 113/222 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