/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:05:49,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:05:49,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:05:49,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:05:49,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:05:49,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:05:49,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:05:49,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:05:49,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:05:49,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:05:49,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:05:49,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:05:49,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:05:49,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:05:49,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:05:49,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:05:49,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:05:49,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:05:49,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:05:49,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:05:49,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:05:49,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:05:49,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:05:49,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:05:49,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:05:49,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:05:49,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:05:49,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:05:49,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:05:49,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:05:49,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:05:49,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:05:49,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:05:49,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:05:49,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:05:49,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:05:49,253 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 [2023-01-27 21:05:49,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:05:49,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:05:49,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:05:49,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:05:49,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:05:49,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:05:49,267 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:05:49,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:05:49,267 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:05:49,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:05:49,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:05:49,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:05:49,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:05:49,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:05:49,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:05:49,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:05:49,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:05:49,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:05:49,473 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:05:49,473 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:05:49,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-01-27 21:05:50,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:05:50,616 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:05:50,617 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-01-27 21:05:50,621 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3b836cf/3468f499b8c64e13a32a017d9a30d033/FLAG4a12809bc [2023-01-27 21:05:50,630 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3b836cf/3468f499b8c64e13a32a017d9a30d033 [2023-01-27 21:05:50,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:05:50,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:05:50,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:05:50,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:05:50,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:05:50,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476b9580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50, skipping insertion in model container [2023-01-27 21:05:50,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:05:50,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:05:50,770 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/parallel-parallel-sum-2.wvr.c[4225,4238] [2023-01-27 21:05:50,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:05:50,786 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:05:50,804 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/parallel-parallel-sum-2.wvr.c[4225,4238] [2023-01-27 21:05:50,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:05:50,813 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:05:50,813 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:05:50,818 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:05:50,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50 WrapperNode [2023-01-27 21:05:50,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:05:50,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:05:50,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:05:50,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:05:50,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,851 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 403 [2023-01-27 21:05:50,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:05:50,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:05:50,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:05:50,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:05:50,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:05:50,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:05:50,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:05:50,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:05:50,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (1/1) ... [2023-01-27 21:05:50,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:05:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:05:50,911 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) [2023-01-27 21:05:50,913 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 [2023-01-27 21:05:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:05:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:05:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:05:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:05:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:05:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:05:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:05:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:05:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-01-27 21:05:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-01-27 21:05:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-01-27 21:05:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:05:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:05:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:05:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:05:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:05:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:05:50,950 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:05:51,037 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:05:51,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:05:51,478 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:05:51,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:05:51,626 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-27 21:05:51,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:05:51 BoogieIcfgContainer [2023-01-27 21:05:51,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:05:51,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:05:51,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:05:51,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:05:51,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:05:50" (1/3) ... [2023-01-27 21:05:51,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d6028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:05:51, skipping insertion in model container [2023-01-27 21:05:51,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:05:50" (2/3) ... [2023-01-27 21:05:51,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d6028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:05:51, skipping insertion in model container [2023-01-27 21:05:51,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:05:51" (3/3) ... [2023-01-27 21:05:51,634 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-01-27 21:05:51,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:05:51,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:05:51,645 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:05:51,746 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-01-27 21:05:51,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 310 transitions, 692 flow [2023-01-27 21:05:51,851 INFO L130 PetriNetUnfolder]: 21/266 cut-off events. [2023-01-27 21:05:51,851 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-27 21:05:51,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 266 events. 21/266 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 228. Up to 3 conditions per place. [2023-01-27 21:05:51,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 310 transitions, 692 flow [2023-01-27 21:05:51,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 258 transitions, 564 flow [2023-01-27 21:05:51,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:05:51,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 258 transitions, 564 flow [2023-01-27 21:05:51,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 258 transitions, 564 flow [2023-01-27 21:05:51,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 258 transitions, 564 flow [2023-01-27 21:05:51,912 INFO L130 PetriNetUnfolder]: 21/258 cut-off events. [2023-01-27 21:05:51,912 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-27 21:05:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 258 events. 21/258 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 306 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 228. Up to 3 conditions per place. [2023-01-27 21:05:51,932 INFO L119 LiptonReduction]: Number of co-enabled transitions 8992 [2023-01-27 21:05:58,044 INFO L134 LiptonReduction]: Checked pairs total: 29590 [2023-01-27 21:05:58,045 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-01-27 21:05:58,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:05:58,062 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;@550ab46e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:05:58,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-01-27 21:05:58,074 INFO L130 PetriNetUnfolder]: 9/60 cut-off events. [2023-01-27 21:05:58,075 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-27 21:05:58,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:05:58,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:05:58,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:05:58,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:05:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1766388373, now seen corresponding path program 1 times [2023-01-27 21:05:58,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:05:58,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169262426] [2023-01-27 21:05:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:05:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:05:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:05:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:05:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:05:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169262426] [2023-01-27 21:05:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169262426] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:05:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:05:58,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:05:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585767237] [2023-01-27 21:05:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:05:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:05:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:05:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:05:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:05:58,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 551 [2023-01-27 21:05:58,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:58,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:05:58,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 551 [2023-01-27 21:05:58,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:05:59,305 INFO L130 PetriNetUnfolder]: 4669/6705 cut-off events. [2023-01-27 21:05:59,306 INFO L131 PetriNetUnfolder]: For 1489/1489 co-relation queries the response was YES. [2023-01-27 21:05:59,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 6705 events. 4669/6705 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 31411 event pairs, 3014 based on Foata normal form. 36/4933 useless extension candidates. Maximal degree in co-relation 7761. Up to 3367 conditions per place. [2023-01-27 21:05:59,327 INFO L137 encePairwiseOnDemand]: 545/551 looper letters, 38 selfloop transitions, 2 changer transitions 31/93 dead transitions. [2023-01-27 21:05:59,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 421 flow [2023-01-27 21:05:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:05:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:05:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1038 transitions. [2023-01-27 21:05:59,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470961887477314 [2023-01-27 21:05:59,339 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1038 transitions. [2023-01-27 21:05:59,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1038 transitions. [2023-01-27 21:05:59,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:05:59,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1038 transitions. [2023-01-27 21:05:59,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:59,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:59,351 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:59,352 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 170 flow. Second operand 4 states and 1038 transitions. [2023-01-27 21:05:59,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 421 flow [2023-01-27 21:05:59,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 359 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-01-27 21:05:59,371 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 156 flow [2023-01-27 21:05:59,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-01-27 21:05:59,374 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-01-27 21:05:59,374 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 156 flow [2023-01-27 21:05:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:05:59,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:05:59,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:05:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:05:59,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:05:59,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:05:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 117533720, now seen corresponding path program 1 times [2023-01-27 21:05:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:05:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404305042] [2023-01-27 21:05:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:05:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:05:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:05:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:05:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:05:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404305042] [2023-01-27 21:05:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404305042] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:05:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662313568] [2023-01-27 21:05:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:05:59,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:05:59,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:05:59,899 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) [2023-01-27 21:05:59,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:06:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:00,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 21:06:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:06:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:00,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:06:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:06:00,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662313568] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:06:00,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:06:00,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 13 [2023-01-27 21:06:00,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297444820] [2023-01-27 21:06:00,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:06:00,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:06:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:06:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:06:00,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-01-27 21:06:00,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 551 [2023-01-27 21:06:00,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:00,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:06:00,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 551 [2023-01-27 21:06:00,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:06:01,354 INFO L130 PetriNetUnfolder]: 5283/7284 cut-off events. [2023-01-27 21:06:01,354 INFO L131 PetriNetUnfolder]: For 1133/1141 co-relation queries the response was YES. [2023-01-27 21:06:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15431 conditions, 7284 events. 5283/7284 cut-off events. For 1133/1141 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 31914 event pairs, 2115 based on Foata normal form. 5/5876 useless extension candidates. Maximal degree in co-relation 15419. Up to 4193 conditions per place. [2023-01-27 21:06:01,380 INFO L137 encePairwiseOnDemand]: 543/551 looper letters, 81 selfloop transitions, 8 changer transitions 9/120 dead transitions. [2023-01-27 21:06:01,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 504 flow [2023-01-27 21:06:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:06:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:06:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1298 transitions. [2023-01-27 21:06:01,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711433756805808 [2023-01-27 21:06:01,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1298 transitions. [2023-01-27 21:06:01,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1298 transitions. [2023-01-27 21:06:01,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:06:01,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1298 transitions. [2023-01-27 21:06:01,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.6) internal successors, (1298), 5 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:01,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:01,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:01,389 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 156 flow. Second operand 5 states and 1298 transitions. [2023-01-27 21:06:01,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 504 flow [2023-01-27 21:06:01,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 494 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 21:06:01,396 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 211 flow [2023-01-27 21:06:01,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-01-27 21:06:01,397 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2023-01-27 21:06:01,397 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 211 flow [2023-01-27 21:06:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:01,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:06:01,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:06:01,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 21:06:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:01,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:06:01,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:06:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash 918312716, now seen corresponding path program 2 times [2023-01-27 21:06:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:06:01,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138130223] [2023-01-27 21:06:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:06:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:02,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:06:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138130223] [2023-01-27 21:06:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138130223] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:06:02,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212066742] [2023-01-27 21:06:02,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:06:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:06:02,087 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) [2023-01-27 21:06:02,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:06:02,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 21:06:02,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:06:02,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-27 21:06:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:06:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:06:02,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:06:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212066742] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:06:02,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:06:02,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-01-27 21:06:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754522163] [2023-01-27 21:06:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:06:02,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:06:02,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:06:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:06:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:06:02,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 551 [2023-01-27 21:06:02,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 255.16666666666666) internal successors, (1531), 6 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:02,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:06:02,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 551 [2023-01-27 21:06:02,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:06:03,284 INFO L130 PetriNetUnfolder]: 7715/10366 cut-off events. [2023-01-27 21:06:03,284 INFO L131 PetriNetUnfolder]: For 4941/4993 co-relation queries the response was YES. [2023-01-27 21:06:03,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25631 conditions, 10366 events. 7715/10366 cut-off events. For 4941/4993 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 46113 event pairs, 2067 based on Foata normal form. 31/9569 useless extension candidates. Maximal degree in co-relation 25617. Up to 3712 conditions per place. [2023-01-27 21:06:03,319 INFO L137 encePairwiseOnDemand]: 542/551 looper letters, 106 selfloop transitions, 12 changer transitions 9/149 dead transitions. [2023-01-27 21:06:03,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 149 transitions, 690 flow [2023-01-27 21:06:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:06:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:06:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1625 transitions. [2023-01-27 21:06:03,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49153055051421657 [2023-01-27 21:06:03,322 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1625 transitions. [2023-01-27 21:06:03,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1625 transitions. [2023-01-27 21:06:03,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:06:03,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1625 transitions. [2023-01-27 21:06:03,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.8333333333333) internal successors, (1625), 6 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:03,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:03,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 551.0) internal successors, (3857), 7 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:03,330 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 211 flow. Second operand 6 states and 1625 transitions. [2023-01-27 21:06:03,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 149 transitions, 690 flow [2023-01-27 21:06:03,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 149 transitions, 670 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 21:06:03,343 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 267 flow [2023-01-27 21:06:03,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-01-27 21:06:03,343 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2023-01-27 21:06:03,343 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 267 flow [2023-01-27 21:06:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.16666666666666) internal successors, (1531), 6 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:03,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:06:03,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:06:03,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 21:06:03,549 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,SelfDestructingSolverStorable2 [2023-01-27 21:06:03,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:06:03,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:06:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1783620550, now seen corresponding path program 1 times [2023-01-27 21:06:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:06:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764809346] [2023-01-27 21:06:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:06:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:06:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764809346] [2023-01-27 21:06:03,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764809346] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:06:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997034928] [2023-01-27 21:06:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:03,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:06:03,752 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) [2023-01-27 21:06:03,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 21:06:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:03,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 21:06:03,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:06:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:06:04,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:06:04,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997034928] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:06:04,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:06:04,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-01-27 21:06:04,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106005688] [2023-01-27 21:06:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:06:04,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:06:04,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:06:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:06:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:06:04,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 551 [2023-01-27 21:06:04,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:04,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:06:04,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 551 [2023-01-27 21:06:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:06:05,109 INFO L130 PetriNetUnfolder]: 11863/15713 cut-off events. [2023-01-27 21:06:05,110 INFO L131 PetriNetUnfolder]: For 8889/9087 co-relation queries the response was YES. [2023-01-27 21:06:05,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39689 conditions, 15713 events. 11863/15713 cut-off events. For 8889/9087 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 72010 event pairs, 2155 based on Foata normal form. 164/14651 useless extension candidates. Maximal degree in co-relation 39666. Up to 7293 conditions per place. [2023-01-27 21:06:05,172 INFO L137 encePairwiseOnDemand]: 545/551 looper letters, 96 selfloop transitions, 11 changer transitions 2/131 dead transitions. [2023-01-27 21:06:05,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 648 flow [2023-01-27 21:06:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:06:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:06:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1103 transitions. [2023-01-27 21:06:05,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004537205081669 [2023-01-27 21:06:05,175 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1103 transitions. [2023-01-27 21:06:05,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1103 transitions. [2023-01-27 21:06:05,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:06:05,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1103 transitions. [2023-01-27 21:06:05,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:05,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:05,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:05,180 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 267 flow. Second operand 4 states and 1103 transitions. [2023-01-27 21:06:05,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 648 flow [2023-01-27 21:06:05,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 131 transitions, 635 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 21:06:05,210 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 301 flow [2023-01-27 21:06:05,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2023-01-27 21:06:05,212 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2023-01-27 21:06:05,212 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 301 flow [2023-01-27 21:06:05,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:05,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:06:05,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:06:05,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 21:06:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:05,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:06:05,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:06:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1944478364, now seen corresponding path program 1 times [2023-01-27 21:06:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:06:05,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953712570] [2023-01-27 21:06:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:06:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:05,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:06:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953712570] [2023-01-27 21:06:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953712570] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:06:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659717850] [2023-01-27 21:06:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:06:05,651 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) [2023-01-27 21:06:05,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 21:06:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:05,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 21:06:05,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:06:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:06:05,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:06:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:06:05,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659717850] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:06:05,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:06:05,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-01-27 21:06:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884668634] [2023-01-27 21:06:05,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:06:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:06:05,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:06:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:06:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:06:05,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 551 [2023-01-27 21:06:05,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 301 flow. Second operand has 9 states, 9 states have (on average 248.77777777777777) internal successors, (2239), 9 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:05,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:06:05,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 551 [2023-01-27 21:06:05,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:06:07,406 INFO L130 PetriNetUnfolder]: 15199/20692 cut-off events. [2023-01-27 21:06:07,407 INFO L131 PetriNetUnfolder]: For 25443/25613 co-relation queries the response was YES. [2023-01-27 21:06:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52360 conditions, 20692 events. 15199/20692 cut-off events. For 25443/25613 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 105822 event pairs, 2824 based on Foata normal form. 1074/20023 useless extension candidates. Maximal degree in co-relation 49911. Up to 10211 conditions per place. [2023-01-27 21:06:07,484 INFO L137 encePairwiseOnDemand]: 542/551 looper letters, 122 selfloop transitions, 18 changer transitions 68/230 dead transitions. [2023-01-27 21:06:07,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 230 transitions, 1136 flow [2023-01-27 21:06:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:06:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:06:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2842 transitions. [2023-01-27 21:06:07,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2023-01-27 21:06:07,489 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2842 transitions. [2023-01-27 21:06:07,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2842 transitions. [2023-01-27 21:06:07,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:06:07,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2842 transitions. [2023-01-27 21:06:07,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 258.3636363636364) internal successors, (2842), 11 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:07,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 551.0) internal successors, (6612), 12 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:07,500 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 551.0) internal successors, (6612), 12 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:07,500 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 301 flow. Second operand 11 states and 2842 transitions. [2023-01-27 21:06:07,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 230 transitions, 1136 flow [2023-01-27 21:06:07,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 230 transitions, 1120 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 21:06:07,513 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 356 flow [2023-01-27 21:06:07,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=356, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2023-01-27 21:06:07,513 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 17 predicate places. [2023-01-27 21:06:07,513 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 356 flow [2023-01-27 21:06:07,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 248.77777777777777) internal successors, (2239), 9 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:07,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:06:07,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-01-27 21:06:07,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 21:06:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:07,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:06:07,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:06:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash -501703849, now seen corresponding path program 1 times [2023-01-27 21:06:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:06:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108728715] [2023-01-27 21:06:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:06:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:08,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:06:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108728715] [2023-01-27 21:06:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108728715] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:06:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691897207] [2023-01-27 21:06:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:08,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:06:08,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:06:08,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 21:06:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:08,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 74 conjunts are in the unsatisfiable core [2023-01-27 21:06:08,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:06:09,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 21:06:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:06:09,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:06:09,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:06:09,592 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 27 treesize of output 18 [2023-01-27 21:06:09,605 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 21:06:09,605 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 27 treesize of output 14 [2023-01-27 21:06:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:06:09,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691897207] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:06:09,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:06:09,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2023-01-27 21:06:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323612386] [2023-01-27 21:06:09,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:06:09,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 21:06:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:06:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 21:06:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-01-27 21:06:09,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 551 [2023-01-27 21:06:09,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 356 flow. Second operand has 18 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:09,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:06:09,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 551 [2023-01-27 21:06:09,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:06:18,601 INFO L130 PetriNetUnfolder]: 79866/104592 cut-off events. [2023-01-27 21:06:18,601 INFO L131 PetriNetUnfolder]: For 105368/105528 co-relation queries the response was YES. [2023-01-27 21:06:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281581 conditions, 104592 events. 79866/104592 cut-off events. For 105368/105528 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 581335 event pairs, 8642 based on Foata normal form. 2114/100170 useless extension candidates. Maximal degree in co-relation 281566. Up to 15773 conditions per place. [2023-01-27 21:06:19,115 INFO L137 encePairwiseOnDemand]: 537/551 looper letters, 694 selfloop transitions, 170 changer transitions 81/960 dead transitions. [2023-01-27 21:06:19,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 960 transitions, 5353 flow [2023-01-27 21:06:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-27 21:06:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-27 21:06:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8531 transitions. [2023-01-27 21:06:19,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418452935694315 [2023-01-27 21:06:19,130 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8531 transitions. [2023-01-27 21:06:19,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8531 transitions. [2023-01-27 21:06:19,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:06:19,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8531 transitions. [2023-01-27 21:06:19,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 230.56756756756758) internal successors, (8531), 37 states have internal predecessors, (8531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:19,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 551.0) internal successors, (20938), 38 states have internal predecessors, (20938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:19,164 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 551.0) internal successors, (20938), 38 states have internal predecessors, (20938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:19,164 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 356 flow. Second operand 37 states and 8531 transitions. [2023-01-27 21:06:19,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 960 transitions, 5353 flow [2023-01-27 21:06:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 960 transitions, 5185 flow, removed 73 selfloop flow, removed 3 redundant places. [2023-01-27 21:06:19,414 INFO L231 Difference]: Finished difference. Result has 138 places, 258 transitions, 1990 flow [2023-01-27 21:06:19,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1990, PETRI_PLACES=138, PETRI_TRANSITIONS=258} [2023-01-27 21:06:19,415 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 67 predicate places. [2023-01-27 21:06:19,415 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 258 transitions, 1990 flow [2023-01-27 21:06:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:19,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:06:19,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-01-27 21:06:19,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 21:06:19,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:19,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:06:19,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:06:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1680073653, now seen corresponding path program 1 times [2023-01-27 21:06:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:06:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674174711] [2023-01-27 21:06:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:06:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:06:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674174711] [2023-01-27 21:06:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674174711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:06:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578049186] [2023-01-27 21:06:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:06:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:06:20,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:06:20,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:06:20,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 21:06:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:06:20,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-27 21:06:20,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:06:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:06:21,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 21:06:21,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:06:21,452 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 17 treesize of output 15 [2023-01-27 21:06:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:21,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:06:21,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2023-01-27 21:06:21,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:06:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:06:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578049186] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:06:22,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:06:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-01-27 21:06:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860684553] [2023-01-27 21:06:22,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:06:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:06:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:06:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:06:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=774, Unknown=1, NotChecked=0, Total=870 [2023-01-27 21:06:22,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 551 [2023-01-27 21:06:22,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 258 transitions, 1990 flow. Second operand has 30 states, 30 states have (on average 202.3) internal successors, (6069), 30 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:06:22,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:06:22,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 551 [2023-01-27 21:06:22,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:07:06,398 INFO L130 PetriNetUnfolder]: 156421/206681 cut-off events. [2023-01-27 21:07:06,398 INFO L131 PetriNetUnfolder]: For 372285/372465 co-relation queries the response was YES. [2023-01-27 21:07:07,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618919 conditions, 206681 events. 156421/206681 cut-off events. For 372285/372465 co-relation queries the response was YES. Maximal size of possible extension queue 3904. Compared 1254684 event pairs, 9660 based on Foata normal form. 499/193989 useless extension candidates. Maximal degree in co-relation 618882. Up to 31490 conditions per place. [2023-01-27 21:07:08,574 INFO L137 encePairwiseOnDemand]: 533/551 looper letters, 1305 selfloop transitions, 444 changer transitions 146/1906 dead transitions. [2023-01-27 21:07:08,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1906 transitions, 12862 flow [2023-01-27 21:07:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-01-27 21:07:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-01-27 21:07:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 17662 transitions. [2023-01-27 21:07:08,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39573390692567945 [2023-01-27 21:07:08,616 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 17662 transitions. [2023-01-27 21:07:08,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 17662 transitions. [2023-01-27 21:07:08,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:07:08,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 17662 transitions. [2023-01-27 21:07:08,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 218.0493827160494) internal successors, (17662), 81 states have internal predecessors, (17662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:08,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 551.0) internal successors, (45182), 82 states have internal predecessors, (45182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:08,683 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 551.0) internal successors, (45182), 82 states have internal predecessors, (45182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:08,683 INFO L175 Difference]: Start difference. First operand has 138 places, 258 transitions, 1990 flow. Second operand 81 states and 17662 transitions. [2023-01-27 21:07:08,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1906 transitions, 12862 flow [2023-01-27 21:07:14,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 1906 transitions, 11712 flow, removed 452 selfloop flow, removed 14 redundant places. [2023-01-27 21:07:14,825 INFO L231 Difference]: Finished difference. Result has 244 places, 604 transitions, 5796 flow [2023-01-27 21:07:14,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=5796, PETRI_PLACES=244, PETRI_TRANSITIONS=604} [2023-01-27 21:07:14,826 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 173 predicate places. [2023-01-27 21:07:14,826 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 604 transitions, 5796 flow [2023-01-27 21:07:14,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 202.3) internal successors, (6069), 30 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:14,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:07:14,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-01-27 21:07:14,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 21:07:15,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:07:15,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:07:15,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:07:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1353551839, now seen corresponding path program 1 times [2023-01-27 21:07:15,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:07:15,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353309924] [2023-01-27 21:07:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:07:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:07:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:07:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:07:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:07:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353309924] [2023-01-27 21:07:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353309924] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:07:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559346377] [2023-01-27 21:07:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:07:15,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:07:15,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:07:15,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:07:15,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 21:07:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:07:15,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 92 conjunts are in the unsatisfiable core [2023-01-27 21:07:15,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:07:16,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:07:16,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 21:07:16,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 21:07:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:07:17,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:07:17,256 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse1 (+ c_~s22~0 c_~s12~0)) (.cse0 (+ c_~x~0.offset 4 (* c_~i1~0 4)))) (and (forall ((v_ArrVal_537 (Array Int Int))) (<= (+ c_~s11~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t6~0#1.base| v_ArrVal_537) c_~x~0.base) .cse0) c_~s21~0) .cse1)) (forall ((v_ArrVal_537 (Array Int Int))) (<= .cse1 (+ c_~s11~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t6~0#1.base| v_ArrVal_537) c_~x~0.base) .cse0) c_~s21~0))))) (<= c_~n~0 c_~i1~0) (<= (+ c_~i1~0 2) c_~n~0)) is different from false [2023-01-27 21:07:17,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:07:17,295 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 62 treesize of output 43 [2023-01-27 21:07:17,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-01-27 21:07:17,311 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:07:17,316 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 21:07:17,316 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 27 treesize of output 14 [2023-01-27 21:07:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-27 21:07:17,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559346377] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:07:17,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:07:17,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-01-27 21:07:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981104674] [2023-01-27 21:07:17,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:07:17,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 21:07:17,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:07:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 21:07:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=654, Unknown=1, NotChecked=52, Total=812 [2023-01-27 21:07:17,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 551 [2023-01-27 21:07:17,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 604 transitions, 5796 flow. Second operand has 29 states, 29 states have (on average 202.17241379310346) internal successors, (5863), 29 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:07:17,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:07:17,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 551 [2023-01-27 21:07:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:08:48,912 INFO L130 PetriNetUnfolder]: 350083/459333 cut-off events. [2023-01-27 21:08:48,912 INFO L131 PetriNetUnfolder]: For 1662335/1662595 co-relation queries the response was YES. [2023-01-27 21:08:55,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504783 conditions, 459333 events. 350083/459333 cut-off events. For 1662335/1662595 co-relation queries the response was YES. Maximal size of possible extension queue 8596. Compared 2980387 event pairs, 22465 based on Foata normal form. 460/431006 useless extension candidates. Maximal degree in co-relation 1504708. Up to 76612 conditions per place. [2023-01-27 21:08:56,699 INFO L137 encePairwiseOnDemand]: 510/551 looper letters, 1481 selfloop transitions, 1169 changer transitions 229/2890 dead transitions. [2023-01-27 21:08:56,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 2890 transitions, 26424 flow [2023-01-27 21:08:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-01-27 21:08:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-01-27 21:08:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 18051 transitions. [2023-01-27 21:08:56,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39951750697180294 [2023-01-27 21:08:56,737 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 18051 transitions. [2023-01-27 21:08:56,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 18051 transitions. [2023-01-27 21:08:56,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:08:56,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 18051 transitions. [2023-01-27 21:08:56,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 220.1341463414634) internal successors, (18051), 82 states have internal predecessors, (18051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:08:56,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 551.0) internal successors, (45733), 83 states have internal predecessors, (45733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:08:56,827 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 551.0) internal successors, (45733), 83 states have internal predecessors, (45733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:08:56,827 INFO L175 Difference]: Start difference. First operand has 244 places, 604 transitions, 5796 flow. Second operand 82 states and 18051 transitions. [2023-01-27 21:08:56,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 2890 transitions, 26424 flow [2023-01-27 21:10:27,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 2890 transitions, 24196 flow, removed 1105 selfloop flow, removed 11 redundant places. [2023-01-27 21:10:27,454 INFO L231 Difference]: Finished difference. Result has 334 places, 1557 transitions, 18406 flow [2023-01-27 21:10:27,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=18406, PETRI_PLACES=334, PETRI_TRANSITIONS=1557} [2023-01-27 21:10:27,456 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 263 predicate places. [2023-01-27 21:10:27,456 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 1557 transitions, 18406 flow [2023-01-27 21:10:27,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 202.17241379310346) internal successors, (5863), 29 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:27,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:27,457 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-01-27 21:10:27,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 21:10:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:10:27,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-01-27 21:10:27,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 647707253, now seen corresponding path program 2 times [2023-01-27 21:10:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458805806] [2023-01-27 21:10:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:27,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:28,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:28,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458805806] [2023-01-27 21:10:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458805806] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:10:28,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069351359] [2023-01-27 21:10:28,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:10:28,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:10:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:10:28,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:10:28,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 21:10:28,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:10:28,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:10:28,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 74 conjunts are in the unsatisfiable core [2023-01-27 21:10:28,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:10:29,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 21:10:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:10:29,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:10:29,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:10:29,217 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 27 treesize of output 18 [2023-01-27 21:10:29,231 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 21:10:29,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2023-01-27 21:10:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:10:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069351359] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:10:29,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:10:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2023-01-27 21:10:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510921912] [2023-01-27 21:10:29,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:10:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 21:10:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 21:10:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-01-27 21:10:29,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 551 [2023-01-27 21:10:29,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 1557 transitions, 18406 flow. Second operand has 18 states, 18 states have (on average 213.16666666666666) internal successors, (3837), 18 states have internal predecessors, (3837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:29,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:29,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 551 [2023-01-27 21:10:29,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand