/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:45:22,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:45:22,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:45:22,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:45:22,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:45:22,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:45:22,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:45:22,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:45:22,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:45:22,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:45:22,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:45:22,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:45:22,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:45:22,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:45:22,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:45:22,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:45:22,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:45:22,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:45:22,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:45:22,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:45:22,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:45:22,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:45:22,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:45:22,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:45:22,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:45:22,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:45:22,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:45:22,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:45:22,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:45:22,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:45:22,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:45:22,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:45:22,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:45:22,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:45:22,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:45:22,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:45:22,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:45:22,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:45:22,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:45:22,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:45:22,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:45:22,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 03:45:22,336 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:45:22,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:45:22,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:45:22,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:45:22,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:45:22,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:45:22,337 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:45:22,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:45:22,338 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:45:22,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:45:22,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:45:22,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:45:22,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:45:22,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:45:22,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:45:22,340 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:45:22,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:45:22,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:45:22,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:45:22,541 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:45:22,547 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:45:22,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-01-28 03:45:23,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:45:23,671 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:45:23,671 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-01-28 03:45:23,676 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f31da096c/5f469f3a48fa483983a87ba1a28c06e5/FLAG813ae302a [2023-01-28 03:45:23,686 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f31da096c/5f469f3a48fa483983a87ba1a28c06e5 [2023-01-28 03:45:23,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:45:23,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:45:23,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:45:23,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:45:23,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:45:23,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:23,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c620b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23, skipping insertion in model container [2023-01-28 03:45:23,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:23,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:45:23,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:45:23,848 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-dot-product-alt.wvr.c[3182,3195] [2023-01-28 03:45:23,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:45:23,868 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:45:23,908 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-dot-product-alt.wvr.c[3182,3195] [2023-01-28 03:45:23,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:45:23,921 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:45:23,922 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:45:23,927 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:45:23,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23 WrapperNode [2023-01-28 03:45:23,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:45:23,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:45:23,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:45:23,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:45:23,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:23,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:23,986 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 369 [2023-01-28 03:45:23,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:45:23,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:45:23,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:45:23,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:45:23,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:23,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,014 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:45:24,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:45:24,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:45:24,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:45:24,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (1/1) ... [2023-01-28 03:45:24,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:45:24,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:45:24,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 03:45:24,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 03:45:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:45:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:45:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:45:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:45:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:45:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:45:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:45:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 03:45:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 03:45:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 03:45:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:45:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:45:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:45:24,091 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 03:45:24,203 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:45:24,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:45:24,590 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:45:24,783 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:45:24,784 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 03:45:24,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:45:24 BoogieIcfgContainer [2023-01-28 03:45:24,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:45:24,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:45:24,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:45:24,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:45:24,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:45:23" (1/3) ... [2023-01-28 03:45:24,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@979046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:45:24, skipping insertion in model container [2023-01-28 03:45:24,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:45:23" (2/3) ... [2023-01-28 03:45:24,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@979046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:45:24, skipping insertion in model container [2023-01-28 03:45:24,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:45:24" (3/3) ... [2023-01-28 03:45:24,791 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-01-28 03:45:24,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:45:24,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:45:24,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:45:24,904 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 03:45:24,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 330 transitions, 684 flow [2023-01-28 03:45:25,044 INFO L130 PetriNetUnfolder]: 35/327 cut-off events. [2023-01-28 03:45:25,045 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:45:25,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 327 events. 35/327 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 643 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 262. Up to 2 conditions per place. [2023-01-28 03:45:25,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 330 transitions, 684 flow [2023-01-28 03:45:25,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 317 transitions, 652 flow [2023-01-28 03:45:25,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:45:25,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 317 transitions, 652 flow [2023-01-28 03:45:25,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 317 transitions, 652 flow [2023-01-28 03:45:25,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 317 transitions, 652 flow [2023-01-28 03:45:25,162 INFO L130 PetriNetUnfolder]: 35/317 cut-off events. [2023-01-28 03:45:25,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:45:25,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 317 events. 35/317 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 642 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 262. Up to 2 conditions per place. [2023-01-28 03:45:25,167 INFO L119 LiptonReduction]: Number of co-enabled transitions 11934 [2023-01-28 03:45:35,133 INFO L134 LiptonReduction]: Checked pairs total: 13624 [2023-01-28 03:45:35,133 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-01-28 03:45:35,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:45:35,158 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;@73350592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:45:35,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 03:45:35,166 INFO L130 PetriNetUnfolder]: 11/41 cut-off events. [2023-01-28 03:45:35,166 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:45:35,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:35,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:35,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:35,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash -423890205, now seen corresponding path program 1 times [2023-01-28 03:45:35,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:35,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056668602] [2023-01-28 03:45:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:45:35,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:35,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056668602] [2023-01-28 03:45:35,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056668602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:35,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:45:35,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 03:45:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698078990] [2023-01-28 03:45:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:45:35,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:45:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:45:35,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 684 [2023-01-28 03:45:35,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:35,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:35,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 684 [2023-01-28 03:45:35,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:35,972 INFO L130 PetriNetUnfolder]: 2127/2864 cut-off events. [2023-01-28 03:45:35,972 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-01-28 03:45:35,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 2864 events. 2127/2864 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12245 event pairs, 407 based on Foata normal form. 1/1923 useless extension candidates. Maximal degree in co-relation 5357. Up to 2091 conditions per place. [2023-01-28 03:45:35,986 INFO L137 encePairwiseOnDemand]: 677/684 looper letters, 58 selfloop transitions, 4 changer transitions 1/66 dead transitions. [2023-01-28 03:45:35,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 291 flow [2023-01-28 03:45:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:45:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:45:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2023-01-28 03:45:36,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46881091617933723 [2023-01-28 03:45:36,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2023-01-28 03:45:36,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2023-01-28 03:45:36,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:36,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2023-01-28 03:45:36,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,020 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 102 flow. Second operand 3 states and 962 transitions. [2023-01-28 03:45:36,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 291 flow [2023-01-28 03:45:36,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 03:45:36,029 INFO L231 Difference]: Finished difference. Result has 38 places, 43 transitions, 112 flow [2023-01-28 03:45:36,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=43} [2023-01-28 03:45:36,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2023-01-28 03:45:36,038 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 43 transitions, 112 flow [2023-01-28 03:45:36,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:36,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:36,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:45:36,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:36,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:36,040 INFO L85 PathProgramCache]: Analyzing trace with hash -502966875, now seen corresponding path program 1 times [2023-01-28 03:45:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:36,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317102782] [2023-01-28 03:45:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:45:36,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317102782] [2023-01-28 03:45:36,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317102782] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:36,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:45:36,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:45:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346737848] [2023-01-28 03:45:36,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:36,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:45:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:45:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:45:36,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 684 [2023-01-28 03:45:36,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:36,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 684 [2023-01-28 03:45:36,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:36,518 INFO L130 PetriNetUnfolder]: 3563/4923 cut-off events. [2023-01-28 03:45:36,518 INFO L131 PetriNetUnfolder]: For 551/551 co-relation queries the response was YES. [2023-01-28 03:45:36,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 4923 events. 3563/4923 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 24879 event pairs, 2128 based on Foata normal form. 189/3992 useless extension candidates. Maximal degree in co-relation 3124. Up to 2836 conditions per place. [2023-01-28 03:45:36,536 INFO L137 encePairwiseOnDemand]: 679/684 looper letters, 69 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-01-28 03:45:36,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 342 flow [2023-01-28 03:45:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:45:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:45:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1504 transitions. [2023-01-28 03:45:36,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439766081871345 [2023-01-28 03:45:36,540 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1504 transitions. [2023-01-28 03:45:36,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1504 transitions. [2023-01-28 03:45:36,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:36,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1504 transitions. [2023-01-28 03:45:36,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,547 INFO L175 Difference]: Start difference. First operand has 38 places, 43 transitions, 112 flow. Second operand 5 states and 1504 transitions. [2023-01-28 03:45:36,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 342 flow [2023-01-28 03:45:36,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:45:36,549 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 132 flow [2023-01-28 03:45:36,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-01-28 03:45:36,550 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-01-28 03:45:36,550 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 132 flow [2023-01-28 03:45:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:36,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:36,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:45:36,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:36,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1862203380, now seen corresponding path program 1 times [2023-01-28 03:45:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179976729] [2023-01-28 03:45:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:45:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179976729] [2023-01-28 03:45:36,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179976729] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:36,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:45:36,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:45:36,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108588315] [2023-01-28 03:45:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:36,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:45:36,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:36,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:45:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:45:36,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 684 [2023-01-28 03:45:36,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 267.5) internal successors, (1070), 4 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:36,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:36,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 684 [2023-01-28 03:45:36,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:37,296 INFO L130 PetriNetUnfolder]: 6439/9045 cut-off events. [2023-01-28 03:45:37,296 INFO L131 PetriNetUnfolder]: For 2107/2107 co-relation queries the response was YES. [2023-01-28 03:45:37,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19723 conditions, 9045 events. 6439/9045 cut-off events. For 2107/2107 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 51137 event pairs, 4038 based on Foata normal form. 396/7330 useless extension candidates. Maximal degree in co-relation 12639. Up to 4867 conditions per place. [2023-01-28 03:45:37,335 INFO L137 encePairwiseOnDemand]: 675/684 looper letters, 103 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2023-01-28 03:45:37,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 118 transitions, 556 flow [2023-01-28 03:45:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:45:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:45:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1417 transitions. [2023-01-28 03:45:37,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41432748538011693 [2023-01-28 03:45:37,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1417 transitions. [2023-01-28 03:45:37,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1417 transitions. [2023-01-28 03:45:37,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:37,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1417 transitions. [2023-01-28 03:45:37,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.4) internal successors, (1417), 5 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:37,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:37,346 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:37,346 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 132 flow. Second operand 5 states and 1417 transitions. [2023-01-28 03:45:37,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 118 transitions, 556 flow [2023-01-28 03:45:37,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 118 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 03:45:37,349 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 221 flow [2023-01-28 03:45:37,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-01-28 03:45:37,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2023-01-28 03:45:37,350 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 221 flow [2023-01-28 03:45:37,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.5) internal successors, (1070), 4 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:37,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:37,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:37,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:45:37,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:37,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash 495709722, now seen corresponding path program 1 times [2023-01-28 03:45:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486964708] [2023-01-28 03:45:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:45:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:37,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486964708] [2023-01-28 03:45:37,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486964708] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:37,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:45:37,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:45:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201601269] [2023-01-28 03:45:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:37,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:45:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:45:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:45:37,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 684 [2023-01-28 03:45:37,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 295.75) internal successors, (1183), 4 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:37,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:37,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 684 [2023-01-28 03:45:37,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:38,254 INFO L130 PetriNetUnfolder]: 7731/10993 cut-off events. [2023-01-28 03:45:38,254 INFO L131 PetriNetUnfolder]: For 3747/3747 co-relation queries the response was YES. [2023-01-28 03:45:38,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24850 conditions, 10993 events. 7731/10993 cut-off events. For 3747/3747 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 65257 event pairs, 4038 based on Foata normal form. 342/8907 useless extension candidates. Maximal degree in co-relation 15406. Up to 8436 conditions per place. [2023-01-28 03:45:38,288 INFO L137 encePairwiseOnDemand]: 681/684 looper letters, 51 selfloop transitions, 0 changer transitions 34/88 dead transitions. [2023-01-28 03:45:38,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 501 flow [2023-01-28 03:45:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:45:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:45:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1227 transitions. [2023-01-28 03:45:38,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44846491228070173 [2023-01-28 03:45:38,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1227 transitions. [2023-01-28 03:45:38,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1227 transitions. [2023-01-28 03:45:38,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:38,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1227 transitions. [2023-01-28 03:45:38,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:38,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 684.0) internal successors, (3420), 5 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:38,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 684.0) internal successors, (3420), 5 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:38,302 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 221 flow. Second operand 4 states and 1227 transitions. [2023-01-28 03:45:38,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 501 flow [2023-01-28 03:45:38,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 499 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 03:45:38,308 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 221 flow [2023-01-28 03:45:38,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-01-28 03:45:38,310 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-01-28 03:45:38,310 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 221 flow [2023-01-28 03:45:38,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.75) internal successors, (1183), 4 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:38,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:38,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:38,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:45:38,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:38,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1794749022, now seen corresponding path program 1 times [2023-01-28 03:45:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:38,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169177051] [2023-01-28 03:45:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:45:38,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:38,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169177051] [2023-01-28 03:45:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169177051] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:45:38,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:45:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491162423] [2023-01-28 03:45:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:38,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:45:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:45:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:45:38,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 684 [2023-01-28 03:45:38,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:38,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:38,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 684 [2023-01-28 03:45:38,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:39,273 INFO L130 PetriNetUnfolder]: 7691/10897 cut-off events. [2023-01-28 03:45:39,274 INFO L131 PetriNetUnfolder]: For 2109/2109 co-relation queries the response was YES. [2023-01-28 03:45:39,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24831 conditions, 10897 events. 7691/10897 cut-off events. For 2109/2109 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 62013 event pairs, 5510 based on Foata normal form. 4/8901 useless extension candidates. Maximal degree in co-relation 24819. Up to 10858 conditions per place. [2023-01-28 03:45:39,315 INFO L137 encePairwiseOnDemand]: 678/684 looper letters, 46 selfloop transitions, 4 changer transitions 16/68 dead transitions. [2023-01-28 03:45:39,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 435 flow [2023-01-28 03:45:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:45:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:45:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1063 transitions. [2023-01-28 03:45:39,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3885233918128655 [2023-01-28 03:45:39,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1063 transitions. [2023-01-28 03:45:39,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1063 transitions. [2023-01-28 03:45:39,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:39,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1063 transitions. [2023-01-28 03:45:39,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:39,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 684.0) internal successors, (3420), 5 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:39,324 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 684.0) internal successors, (3420), 5 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:39,324 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 221 flow. Second operand 4 states and 1063 transitions. [2023-01-28 03:45:39,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 435 flow [2023-01-28 03:45:39,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 431 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 03:45:39,334 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 218 flow [2023-01-28 03:45:39,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-01-28 03:45:39,334 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-01-28 03:45:39,334 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 218 flow [2023-01-28 03:45:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:39,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:39,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:39,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 03:45:39,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:39,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1481099649, now seen corresponding path program 1 times [2023-01-28 03:45:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:39,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486711870] [2023-01-28 03:45:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:45:39,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486711870] [2023-01-28 03:45:39,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486711870] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:39,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676502962] [2023-01-28 03:45:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:39,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:39,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:45:39,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:45:39,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:45:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:39,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:45:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:45:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:45:39,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 03:45:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676502962] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:39,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 03:45:39,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 03:45:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070601448] [2023-01-28 03:45:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:39,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:45:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:45:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:45:39,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 684 [2023-01-28 03:45:39,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:39,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:39,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 684 [2023-01-28 03:45:39,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:40,609 INFO L130 PetriNetUnfolder]: 7924/11566 cut-off events. [2023-01-28 03:45:40,609 INFO L131 PetriNetUnfolder]: For 4383/4383 co-relation queries the response was YES. [2023-01-28 03:45:40,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26335 conditions, 11566 events. 7924/11566 cut-off events. For 4383/4383 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 72409 event pairs, 4038 based on Foata normal form. 360/10081 useless extension candidates. Maximal degree in co-relation 26323. Up to 7896 conditions per place. [2023-01-28 03:45:40,639 INFO L137 encePairwiseOnDemand]: 680/684 looper letters, 48 selfloop transitions, 0 changer transitions 48/99 dead transitions. [2023-01-28 03:45:40,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 99 transitions, 570 flow [2023-01-28 03:45:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:45:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:45:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1523 transitions. [2023-01-28 03:45:40,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44532163742690056 [2023-01-28 03:45:40,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1523 transitions. [2023-01-28 03:45:40,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1523 transitions. [2023-01-28 03:45:40,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:40,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1523 transitions. [2023-01-28 03:45:40,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.6) internal successors, (1523), 5 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:40,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:40,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:40,649 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 218 flow. Second operand 5 states and 1523 transitions. [2023-01-28 03:45:40,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 99 transitions, 570 flow [2023-01-28 03:45:40,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 562 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 03:45:40,655 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 216 flow [2023-01-28 03:45:40,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-01-28 03:45:40,658 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-01-28 03:45:40,658 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 216 flow [2023-01-28 03:45:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:40,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:40,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:40,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:45:40,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 03:45:40,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:40,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1996153928, now seen corresponding path program 1 times [2023-01-28 03:45:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856716925] [2023-01-28 03:45:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:40,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:45:40,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:40,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856716925] [2023-01-28 03:45:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856716925] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:40,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987706464] [2023-01-28 03:45:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:45:40,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:45:41,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:45:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:41,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:45:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:45:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:45:41,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:45:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:45:41,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987706464] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:41,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:45:41,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 03:45:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101833809] [2023-01-28 03:45:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:41,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:45:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:45:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 03:45:41,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 684 [2023-01-28 03:45:41,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:41,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:41,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 684 [2023-01-28 03:45:41,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:41,768 INFO L130 PetriNetUnfolder]: 5396/7963 cut-off events. [2023-01-28 03:45:41,769 INFO L131 PetriNetUnfolder]: For 4493/4493 co-relation queries the response was YES. [2023-01-28 03:45:41,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 7963 events. 5396/7963 cut-off events. For 4493/4493 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 47738 event pairs, 1125 based on Foata normal form. 0/7223 useless extension candidates. Maximal degree in co-relation 19465. Up to 5461 conditions per place. [2023-01-28 03:45:41,798 INFO L137 encePairwiseOnDemand]: 678/684 looper letters, 59 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-01-28 03:45:41,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 408 flow [2023-01-28 03:45:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:45:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:45:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1312 transitions. [2023-01-28 03:45:41,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38362573099415204 [2023-01-28 03:45:41,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1312 transitions. [2023-01-28 03:45:41,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1312 transitions. [2023-01-28 03:45:41,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:41,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1312 transitions. [2023-01-28 03:45:41,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.4) internal successors, (1312), 5 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:41,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:41,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:41,808 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 216 flow. Second operand 5 states and 1312 transitions. [2023-01-28 03:45:41,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 408 flow [2023-01-28 03:45:41,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 390 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 03:45:41,818 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 233 flow [2023-01-28 03:45:41,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-01-28 03:45:41,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-01-28 03:45:41,819 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 233 flow [2023-01-28 03:45:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:41,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:41,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:41,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:45:42,025 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,SelfDestructingSolverStorable6 [2023-01-28 03:45:42,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:42,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1329329946, now seen corresponding path program 1 times [2023-01-28 03:45:42,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317275189] [2023-01-28 03:45:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:45:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:42,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317275189] [2023-01-28 03:45:42,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317275189] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:45:42,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:45:42,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:45:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65505873] [2023-01-28 03:45:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:45:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:45:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:45:42,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 684 [2023-01-28 03:45:42,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:42,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:42,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 684 [2023-01-28 03:45:42,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:43,249 INFO L130 PetriNetUnfolder]: 6057/9079 cut-off events. [2023-01-28 03:45:43,250 INFO L131 PetriNetUnfolder]: For 5733/5733 co-relation queries the response was YES. [2023-01-28 03:45:43,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22848 conditions, 9079 events. 6057/9079 cut-off events. For 5733/5733 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 55278 event pairs, 4110 based on Foata normal form. 159/8594 useless extension candidates. Maximal degree in co-relation 22834. Up to 6172 conditions per place. [2023-01-28 03:45:43,292 INFO L137 encePairwiseOnDemand]: 674/684 looper letters, 83 selfloop transitions, 9 changer transitions 56/150 dead transitions. [2023-01-28 03:45:43,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 150 transitions, 797 flow [2023-01-28 03:45:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:45:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:45:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2589 transitions. [2023-01-28 03:45:43,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3785087719298246 [2023-01-28 03:45:43,298 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2589 transitions. [2023-01-28 03:45:43,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2589 transitions. [2023-01-28 03:45:43,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:43,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2589 transitions. [2023-01-28 03:45:43,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 258.9) internal successors, (2589), 10 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:43,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 684.0) internal successors, (7524), 11 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:43,310 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 684.0) internal successors, (7524), 11 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:43,310 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 233 flow. Second operand 10 states and 2589 transitions. [2023-01-28 03:45:43,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 150 transitions, 797 flow [2023-01-28 03:45:43,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 150 transitions, 786 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 03:45:43,319 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 292 flow [2023-01-28 03:45:43,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-01-28 03:45:43,320 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2023-01-28 03:45:43,320 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 292 flow [2023-01-28 03:45:43,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:43,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:43,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:43,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 03:45:43,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:43,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash 284319270, now seen corresponding path program 2 times [2023-01-28 03:45:43,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:43,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388947343] [2023-01-28 03:45:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:43,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:45:43,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:43,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388947343] [2023-01-28 03:45:43,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388947343] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:43,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084770215] [2023-01-28 03:45:43,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:45:43,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:43,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:45:43,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:45:43,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:45:43,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:45:43,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:45:43,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:45:43,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:45:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:45:43,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:45:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:45:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084770215] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:43,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:45:43,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-28 03:45:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572889100] [2023-01-28 03:45:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:45:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:45:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:45:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:45:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:45:43,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 684 [2023-01-28 03:45:43,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:43,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:45:43,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 684 [2023-01-28 03:45:43,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:45:44,517 INFO L130 PetriNetUnfolder]: 5873/8812 cut-off events. [2023-01-28 03:45:44,517 INFO L131 PetriNetUnfolder]: For 12300/13004 co-relation queries the response was YES. [2023-01-28 03:45:44,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26233 conditions, 8812 events. 5873/8812 cut-off events. For 12300/13004 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 51024 event pairs, 677 based on Foata normal form. 1584/9854 useless extension candidates. Maximal degree in co-relation 26213. Up to 4204 conditions per place. [2023-01-28 03:45:44,547 INFO L137 encePairwiseOnDemand]: 675/684 looper letters, 89 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2023-01-28 03:45:44,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 124 transitions, 860 flow [2023-01-28 03:45:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:45:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:45:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2021 transitions. [2023-01-28 03:45:44,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36933479532163743 [2023-01-28 03:45:44,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2021 transitions. [2023-01-28 03:45:44,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2021 transitions. [2023-01-28 03:45:44,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:45:44,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2021 transitions. [2023-01-28 03:45:44,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:44,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 684.0) internal successors, (6156), 9 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:44,559 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 684.0) internal successors, (6156), 9 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:44,559 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 292 flow. Second operand 8 states and 2021 transitions. [2023-01-28 03:45:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 124 transitions, 860 flow [2023-01-28 03:45:44,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 835 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 03:45:44,568 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 324 flow [2023-01-28 03:45:44,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=324, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-01-28 03:45:44,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2023-01-28 03:45:44,569 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 324 flow [2023-01-28 03:45:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:45:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:45:44,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:45:44,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:45:44,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:44,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:45:44,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:45:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1369385218, now seen corresponding path program 1 times [2023-01-28 03:45:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:45:44,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631649580] [2023-01-28 03:45:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:44,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:45:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:45:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:45:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631649580] [2023-01-28 03:45:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631649580] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:45:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640924707] [2023-01-28 03:45:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:45:46,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:45:46,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:45:46,177 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:45:46,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:45:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:45:46,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 92 conjunts are in the unsatisfiable core [2023-01-28 03:45:46,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:45:46,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,388 INFO L321 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2023-01-28 03:45:46,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 21 [2023-01-28 03:45:46,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,479 INFO L321 Elim1Store]: treesize reduction 88, result has 19.3 percent of original size [2023-01-28 03:45:46,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 27 treesize of output 38 [2023-01-28 03:45:46,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,600 INFO L321 Elim1Store]: treesize reduction 48, result has 26.2 percent of original size [2023-01-28 03:45:46,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 26 treesize of output 32 [2023-01-28 03:45:46,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 03:45:46,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:45:46,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:45:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:46,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 03:45:47,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 03:45:47,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:45:47,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 03:45:47,547 INFO L321 Elim1Store]: treesize reduction 153, result has 30.8 percent of original size [2023-01-28 03:45:47,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 150 [2023-01-28 03:45:47,569 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 03:45:47,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 116 [2023-01-28 03:45:47,580 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 03:45:47,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 84 [2023-01-28 03:45:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:45:47,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:45:47,773 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:45:47,773 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 103 treesize of output 96 [2023-01-28 03:45:48,697 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) (let ((.cse11 (+ c_~A~0.offset .cse10))) (and (forall ((v_ArrVal_692 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_692))) (let ((.cse9 (select .cse6 c_~A~0.base))) (let ((.cse5 (select .cse9 .cse11))) (or (forall ((v_ArrVal_691 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse7 (select .cse6 ~B~0.base))) (let ((.cse0 (select .cse7 (+ .cse10 ~B~0.offset)))) (or (< c_~maxB~0 (+ .cse0 1)) (< .cse0 0) (forall ((|thread3Thread1of1ForFork2_~i~2#1| Int)) (let ((.cse8 (* |thread3Thread1of1ForFork2_~i~2#1| 4))) (let ((.cse1 (select .cse9 (+ c_~A~0.offset .cse8))) (.cse4 (select .cse7 (+ .cse8 ~B~0.offset)))) (or (< .cse1 0) (forall ((v_arrayElimCell_23 Int)) (let ((.cse2 (select .cse6 v_arrayElimCell_23)) (.cse3 (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_691) c_~mult~0.base))) (= (+ c_~res2~0 (select .cse2 (+ (select .cse3 (+ c_~mult~0.offset (* .cse1 4))) (* .cse4 4)))) (+ c_~res1~0 (select .cse2 (+ (select .cse3 (+ (* .cse5 4) c_~mult~0.offset)) (* .cse0 4))))))) (<= c_~maxA~0 .cse1) (< .cse4 0) (<= c_~maxB~0 .cse4))))))))) (< c_~maxA~0 (+ .cse5 1))))))) (forall ((v_ArrVal_692 (Array Int Int))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_692))) (let ((.cse20 (select .cse15 c_~A~0.base))) (let ((.cse14 (select .cse20 .cse11))) (or (forall ((v_ArrVal_691 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse18 (select .cse15 ~B~0.base))) (let ((.cse12 (select .cse18 (+ .cse10 ~B~0.offset)))) (or (< c_~maxB~0 (+ .cse12 1)) (forall ((|thread3Thread1of1ForFork2_~i~2#1| Int)) (let ((.cse19 (* |thread3Thread1of1ForFork2_~i~2#1| 4))) (let ((.cse13 (select .cse20 (+ c_~A~0.offset .cse19))) (.cse17 (select .cse18 (+ .cse19 ~B~0.offset)))) (or (< .cse13 0) (= .cse13 .cse14) (forall ((v_arrayElimCell_23 Int) (v_arrayElimCell_22 Int)) (let ((.cse16 (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_691) c_~mult~0.base))) (= (+ c_~res2~0 (select (select .cse15 v_arrayElimCell_23) (+ (select .cse16 (+ c_~mult~0.offset (* .cse13 4))) (* .cse17 4)))) (+ c_~res1~0 (select (select .cse15 v_arrayElimCell_22) (+ (select .cse16 (+ (* .cse14 4) c_~mult~0.offset)) (* .cse12 4))))))) (<= c_~maxA~0 .cse13) (< .cse17 0) (<= c_~maxB~0 .cse17))))) (< .cse12 0))))) (< c_~maxA~0 (+ .cse14 1)))))))))) is different from false [2023-01-28 03:45:48,896 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) (let ((.cse10 (+ c_~A~0.offset .cse9))) (and (forall ((v_ArrVal_689 (Array Int Int)) (v_ArrVal_690 (Array Int Int)) (v_ArrVal_692 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_690) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_692))) (let ((.cse8 (select .cse4 c_~A~0.base))) (let ((.cse2 (select .cse8 .cse10))) (or (forall ((v_ArrVal_691 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse6 (select .cse4 ~B~0.base))) (let ((.cse0 (select .cse6 (+ .cse9 ~B~0.offset)))) (or (< c_~maxB~0 (+ .cse0 1)) (< .cse0 0) (forall ((|thread3Thread1of1ForFork2_~i~2#1| Int)) (let ((.cse7 (* |thread3Thread1of1ForFork2_~i~2#1| 4))) (let ((.cse3 (select .cse8 (+ c_~A~0.offset .cse7))) (.cse1 (select .cse6 (+ .cse7 ~B~0.offset)))) (or (<= c_~maxB~0 .cse1) (= .cse2 .cse3) (< .cse1 0) (< .cse3 0) (<= c_~maxA~0 .cse3) (forall ((v_arrayElimCell_23 Int) (v_arrayElimCell_22 Int)) (let ((.cse5 (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_689) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_691) c_~mult~0.base))) (= (+ (select (select .cse4 v_arrayElimCell_23) (+ (select .cse5 (+ c_~mult~0.offset (* .cse3 4))) (* .cse1 4))) c_~res2~0) (+ (select (select .cse4 v_arrayElimCell_22) (+ (select .cse5 (+ c_~mult~0.offset (* .cse2 4))) (* .cse0 4))) c_~res1~0)))))))))))) (< c_~maxA~0 (+ .cse2 1))))))) (forall ((v_ArrVal_689 (Array Int Int)) (v_ArrVal_690 (Array Int Int)) (v_ArrVal_692 (Array Int Int))) (let ((.cse17 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_690) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_692))) (let ((.cse20 (select .cse17 c_~A~0.base))) (let ((.cse16 (select .cse20 .cse10))) (or (forall ((v_ArrVal_691 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse18 (select .cse17 ~B~0.base))) (let ((.cse11 (select .cse18 (+ .cse9 ~B~0.offset)))) (or (< c_~maxB~0 (+ .cse11 1)) (< .cse11 0) (forall ((|thread3Thread1of1ForFork2_~i~2#1| Int)) (let ((.cse19 (* |thread3Thread1of1ForFork2_~i~2#1| 4))) (let ((.cse13 (select .cse20 (+ c_~A~0.offset .cse19))) (.cse12 (select .cse18 (+ .cse19 ~B~0.offset)))) (or (<= c_~maxB~0 .cse12) (< .cse12 0) (< .cse13 0) (<= c_~maxA~0 .cse13) (forall ((v_arrayElimCell_23 Int)) (let ((.cse14 (select .cse17 v_arrayElimCell_23)) (.cse15 (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_689) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_691) c_~mult~0.base))) (= (+ (select .cse14 (+ (select .cse15 (+ c_~mult~0.offset (* .cse16 4))) (* .cse11 4))) c_~res1~0) (+ (select .cse14 (+ (select .cse15 (+ c_~mult~0.offset (* .cse13 4))) (* .cse12 4))) c_~res2~0)))))))))))) (< c_~maxA~0 (+ .cse16 1)))))))))) is different from false Received shutdown request... [2023-01-28 04:00:01,788 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:00:01,799 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:00:02,085 WARN L238 SmtUtils]: Removed 443 from assertion stack [2023-01-28 04:00:02,087 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:00:02,093 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 04:00:02,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:02,287 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3785 for 853051ms.. [2023-01-28 04:00:02,289 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:00:02,289 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:00:02,289 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:00:02,289 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:02,291 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:00:02,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:00:02,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:00:02 BasicIcfg [2023-01-28 04:00:02,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:00:02,294 INFO L158 Benchmark]: Toolchain (without parser) took 878605.40ms. Allocated memory was 367.0MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 337.0MB in the beginning and 754.3MB in the end (delta: -417.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-28 04:00:02,294 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 255.9MB. Free memory is still 214.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:00:02,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.06ms. Allocated memory is still 367.0MB. Free memory was 337.0MB in the beginning and 324.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:00:02,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.46ms. Allocated memory is still 367.0MB. Free memory was 324.3MB in the beginning and 321.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 04:00:02,295 INFO L158 Benchmark]: Boogie Preprocessor took 30.24ms. Allocated memory is still 367.0MB. Free memory was 321.1MB in the beginning and 318.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:00:02,295 INFO L158 Benchmark]: RCFGBuilder took 767.84ms. Allocated memory is still 367.0MB. Free memory was 318.7MB in the beginning and 319.8MB in the end (delta: -1.1MB). Peak memory consumption was 38.0MB. Max. memory is 16.0GB. [2023-01-28 04:00:02,295 INFO L158 Benchmark]: TraceAbstraction took 877507.01ms. Allocated memory was 367.0MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 318.9MB in the beginning and 754.3MB in the end (delta: -435.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-28 04:00:02,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 255.9MB. Free memory is still 214.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 238.06ms. Allocated memory is still 367.0MB. Free memory was 337.0MB in the beginning and 324.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.46ms. Allocated memory is still 367.0MB. Free memory was 324.3MB in the beginning and 321.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.24ms. Allocated memory is still 367.0MB. Free memory was 321.1MB in the beginning and 318.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 767.84ms. Allocated memory is still 367.0MB. Free memory was 318.7MB in the beginning and 319.8MB in the end (delta: -1.1MB). Peak memory consumption was 38.0MB. Max. memory is 16.0GB. * TraceAbstraction took 877507.01ms. Allocated memory was 367.0MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 318.9MB in the beginning and 754.3MB in the end (delta: -435.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1s, 292 PlacesBefore, 41 PlacesAfterwards, 317 TransitionsBefore, 42 TransitionsAfterwards, 11934 CoEnabledTransitionPairs, 8 FixpointIterations, 153 TrivialSequentialCompositions, 91 ConcurrentSequentialCompositions, 43 TrivialYvCompositions, 43 ConcurrentYvCompositions, 24 ChoiceCompositions, 354 TotalNumberOfCompositions, 13624 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11520, independent: 11391, independent conditional: 0, independent unconditional: 11391, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7015, independent: 6979, independent conditional: 0, independent unconditional: 6979, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11520, independent: 4412, independent conditional: 0, independent unconditional: 4412, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 7015, unknown conditional: 0, unknown unconditional: 7015] , Statistics on independence cache: Total cache size (in pairs): 159, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3785 for 853051ms.. - TimeoutResultAtElement [Line: 104]: 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 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3785 for 853051ms.. - TimeoutResultAtElement [Line: 102]: 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 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3785 for 853051ms.. - TimeoutResultAtElement [Line: 103]: 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 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3785 for 853051ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 401 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: 877.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 482 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 482 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1351 IncrementalHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 5 mSDtfsCounter, 1351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=9, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 364 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1132 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 33/38 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