/usr/bin/java -Xmx8000000000 -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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:05:01,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:05:01,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:05:01,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:05:01,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:05:01,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:05:01,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:05:01,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:05:01,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:05:01,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:05:01,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:05:01,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:05:01,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:05:01,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:05:01,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:05:01,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:05:01,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:05:01,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:05:01,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:05:01,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:05:01,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:05:01,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:05:01,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:05:01,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:05:01,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:05:01,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:05:01,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:05:01,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:05:01,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:05:01,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:05:01,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:05:01,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:05:01,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:05:01,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:05:01,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:05:01,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:05:01,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:05:01,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:05:01,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:05:01,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:05:01,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:05:01,489 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 11:05:01,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:05:01,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:05:01,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:05:01,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:05:01,517 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:05:01,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:05:01,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:05:01,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:05:01,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:05:01,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:05:01,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:05:01,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:05:01,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:05:01,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:05:01,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:05:01,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:05:01,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:05:01,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:05:01,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:05:01,530 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 11:05:01,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:05:01,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:05:01,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:05:01,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:05:01,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:05:01,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:05:01,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:05:01,802 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:05:01,802 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:05:01,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2022-12-13 11:05:02,707 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:05:02,890 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:05:02,890 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2022-12-13 11:05:02,897 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a80182f0d/1c485eddc3354219a22f97c3b845cbe0/FLAG61c2155a7 [2022-12-13 11:05:02,912 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a80182f0d/1c485eddc3354219a22f97c3b845cbe0 [2022-12-13 11:05:02,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:05:02,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:05:02,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:05:02,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:05:02,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:05:02,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:05:02" (1/1) ... [2022-12-13 11:05:02,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d441d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:02, skipping insertion in model container [2022-12-13 11:05:02,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:05:02" (1/1) ... [2022-12-13 11:05:02,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:05:02,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:05:03,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,088 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-12-13 11:05:03,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:05:03,105 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:05:03,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:05:03,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:05:03,138 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-12-13 11:05:03,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:05:03,156 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:05:03,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03 WrapperNode [2022-12-13 11:05:03,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:05:03,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:05:03,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:05:03,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:05:03,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,199 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 121 [2022-12-13 11:05:03,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:05:03,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:05:03,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:05:03,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:05:03,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,229 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:05:03,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:05:03,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:05:03,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:05:03,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (1/1) ... [2022-12-13 11:05:03,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:05:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:05:03,266 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) [2022-12-13 11:05:03,286 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 [2022-12-13 11:05:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:05:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:05:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:05:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:05:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:05:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:05:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:05:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:05:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:05:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:05:03,299 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:05:03,397 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:05:03,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:05:03,607 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:05:03,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:05:03,632 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 11:05:03,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:05:03 BoogieIcfgContainer [2022-12-13 11:05:03,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:05:03,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:05:03,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:05:03,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:05:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:05:02" (1/3) ... [2022-12-13 11:05:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecdeaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:05:03, skipping insertion in model container [2022-12-13 11:05:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:05:03" (2/3) ... [2022-12-13 11:05:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecdeaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:05:03, skipping insertion in model container [2022-12-13 11:05:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:05:03" (3/3) ... [2022-12-13 11:05:03,640 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-12-13 11:05:03,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:05:03,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:05:03,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:05:03,717 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:05:03,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 171 transitions, 366 flow [2022-12-13 11:05:03,841 INFO L130 PetriNetUnfolder]: 16/168 cut-off events. [2022-12-13 11:05:03,841 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:05:03,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 168 events. 16/168 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 129. Up to 3 conditions per place. [2022-12-13 11:05:03,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 171 transitions, 366 flow [2022-12-13 11:05:03,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 158 transitions, 334 flow [2022-12-13 11:05:03,856 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:05:03,874 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 158 transitions, 334 flow [2022-12-13 11:05:03,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 158 transitions, 334 flow [2022-12-13 11:05:03,926 INFO L130 PetriNetUnfolder]: 16/158 cut-off events. [2022-12-13 11:05:03,926 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:05:03,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 16/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 129. Up to 3 conditions per place. [2022-12-13 11:05:03,938 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 158 transitions, 334 flow [2022-12-13 11:05:03,938 INFO L226 LiptonReduction]: Number of co-enabled transitions 1720 [2022-12-13 11:05:09,057 INFO L241 LiptonReduction]: Total number of compositions: 129 [2022-12-13 11:05:09,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:05:09,076 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=REPEATED_LIPTON_PN, 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;@2ad89381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:05:09,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 11:05:09,081 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2022-12-13 11:05:09,081 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:05:09,081 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:05:09,082 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:05:09,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:05:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:05:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash -662271631, now seen corresponding path program 1 times [2022-12-13 11:05:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:05:09,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998853789] [2022-12-13 11:05:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:09,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:05:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:05:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:05:09,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998853789] [2022-12-13 11:05:09,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998853789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:05:09,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:05:09,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:05:09,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693451900] [2022-12-13 11:05:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:05:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:05:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:05:09,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:05:09,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:05:09,649 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 29 [2022-12-13 11:05:09,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:09,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:05:09,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 29 [2022-12-13 11:05:09,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:05:09,847 INFO L130 PetriNetUnfolder]: 1154/1564 cut-off events. [2022-12-13 11:05:09,847 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-12-13 11:05:09,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3242 conditions, 1564 events. 1154/1564 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6159 event pairs, 311 based on Foata normal form. 1/933 useless extension candidates. Maximal degree in co-relation 1597. Up to 751 conditions per place. [2022-12-13 11:05:09,857 INFO L137 encePairwiseOnDemand]: 21/29 looper letters, 61 selfloop transitions, 10 changer transitions 1/75 dead transitions. [2022-12-13 11:05:09,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 75 transitions, 345 flow [2022-12-13 11:05:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:05:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:05:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2022-12-13 11:05:09,866 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6068965517241379 [2022-12-13 11:05:09,868 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 5 states and 88 transitions. [2022-12-13 11:05:09,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 75 transitions, 345 flow [2022-12-13 11:05:09,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 75 transitions, 311 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 11:05:09,874 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 122 flow [2022-12-13 11:05:09,875 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2022-12-13 11:05:09,878 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 11:05:09,878 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:05:09,879 INFO L89 Accepts]: Start accepts. Operand has 33 places, 37 transitions, 122 flow [2022-12-13 11:05:09,881 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:05:09,881 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:05:09,882 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 37 transitions, 122 flow [2022-12-13 11:05:09,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 37 transitions, 122 flow [2022-12-13 11:05:09,888 INFO L130 PetriNetUnfolder]: 19/79 cut-off events. [2022-12-13 11:05:09,888 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:05:09,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 79 events. 19/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 205 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 58. Up to 11 conditions per place. [2022-12-13 11:05:09,891 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 37 transitions, 122 flow [2022-12-13 11:05:09,891 INFO L226 LiptonReduction]: Number of co-enabled transitions 308 [2022-12-13 11:05:09,896 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:05:09,897 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 19 [2022-12-13 11:05:09,897 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 122 flow [2022-12-13 11:05:09,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:09,898 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:05:09,898 INFO L214 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] [2022-12-13 11:05:09,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:05:09,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:05:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:05:09,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2055672922, now seen corresponding path program 1 times [2022-12-13 11:05:09,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:05:09,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722148935] [2022-12-13 11:05:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:05:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:05:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:05:09,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722148935] [2022-12-13 11:05:09,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722148935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:05:09,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:05:09,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:05:09,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844818891] [2022-12-13 11:05:09,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:05:09,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:05:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:05:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:05:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:05:09,979 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-13 11:05:09,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:09,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:05:09,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-13 11:05:09,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:05:10,202 INFO L130 PetriNetUnfolder]: 1592/2188 cut-off events. [2022-12-13 11:05:10,203 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2022-12-13 11:05:10,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 2188 events. 1592/2188 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9369 event pairs, 516 based on Foata normal form. 66/1565 useless extension candidates. Maximal degree in co-relation 2555. Up to 1180 conditions per place. [2022-12-13 11:05:10,213 INFO L137 encePairwiseOnDemand]: 22/29 looper letters, 63 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2022-12-13 11:05:10,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 72 transitions, 350 flow [2022-12-13 11:05:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:05:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:05:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2022-12-13 11:05:10,215 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2022-12-13 11:05:10,215 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 122 flow. Second operand 5 states and 77 transitions. [2022-12-13 11:05:10,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 72 transitions, 350 flow [2022-12-13 11:05:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 72 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:05:10,216 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 141 flow [2022-12-13 11:05:10,217 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2022-12-13 11:05:10,217 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2022-12-13 11:05:10,217 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:05:10,217 INFO L89 Accepts]: Start accepts. Operand has 39 places, 37 transitions, 141 flow [2022-12-13 11:05:10,218 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:05:10,218 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:05:10,218 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 141 flow [2022-12-13 11:05:10,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 141 flow [2022-12-13 11:05:10,224 INFO L130 PetriNetUnfolder]: 19/84 cut-off events. [2022-12-13 11:05:10,224 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-12-13 11:05:10,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 84 events. 19/84 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 224 event pairs, 0 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 110. Up to 13 conditions per place. [2022-12-13 11:05:10,225 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 37 transitions, 141 flow [2022-12-13 11:05:10,225 INFO L226 LiptonReduction]: Number of co-enabled transitions 310 [2022-12-13 11:05:10,234 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [609] L113-14-->L95-3: Formula: (and (not (< |v_ULTIMATE.start_create_fresh_uint_array_~i~3#1_In_3| |v_ULTIMATE.start_create_fresh_uint_array_~size#1_In_5|)) (= |v_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset_In_3| |v_ULTIMATE.start_create_fresh_uint_array_#res#1.offset_Out_6|) (= |v_#pthreadsForks_Out_2| (+ |v_#pthreadsForks_In_1| 1)) (= |v_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base_In_3| |v_ULTIMATE.start_create_fresh_uint_array_#res#1.base_Out_6|) (= |v_#pthreadsForks_In_1| |v_ULTIMATE.start_main_#t~pre10#1_Out_2|) (= |v_ULTIMATE.start_create_fresh_uint_array_#res#1.offset_Out_6| v_~C~0.offset_Out_2) (= |v_#memory_int_Out_2| (store |v_#memory_int_In_1| |v_ULTIMATE.start_main_~#t1~0#1.base_In_1| (store (select |v_#memory_int_In_1| |v_ULTIMATE.start_main_~#t1~0#1.base_In_1|) |v_ULTIMATE.start_main_~#t1~0#1.offset_In_1| |v_ULTIMATE.start_main_#t~pre10#1_Out_2|))) (= |v_ULTIMATE.start_create_fresh_uint_array_#res#1.base_Out_6| v_~C~0.base_Out_2)) InVars {#pthreadsForks=|v_#pthreadsForks_In_1|, ULTIMATE.start_create_fresh_uint_array_~i~3#1=|v_ULTIMATE.start_create_fresh_uint_array_~i~3#1_In_3|, ULTIMATE.start_create_fresh_uint_array_~size#1=|v_ULTIMATE.start_create_fresh_uint_array_~size#1_In_5|, ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base=|v_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base_In_3|, #memory_int=|v_#memory_int_In_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_In_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_In_1|, ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset=|v_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset_In_3|} OutVars{ULTIMATE.start_create_fresh_uint_array_~i~3#1=|v_ULTIMATE.start_create_fresh_uint_array_~i~3#1_In_3|, ULTIMATE.start_create_fresh_uint_array_~size#1=|v_ULTIMATE.start_create_fresh_uint_array_~size#1_In_5|, ~C~0.base=v_~C~0.base_Out_2, ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base=|v_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base_In_3|, ULTIMATE.start_create_fresh_uint_array_#res#1.base=|v_ULTIMATE.start_create_fresh_uint_array_#res#1.base_Out_6|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_In_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_In_1|, ULTIMATE.start_main_#t~ret9#1.offset=|v_ULTIMATE.start_main_#t~ret9#1.offset_Out_2|, #pthreadsForks=|v_#pthreadsForks_Out_2|, ULTIMATE.start_main_#t~ret9#1.base=|v_ULTIMATE.start_main_#t~ret9#1.base_Out_2|, ULTIMATE.start_main_#t~pre10#1=|v_ULTIMATE.start_main_#t~pre10#1_Out_2|, #memory_int=|v_#memory_int_Out_2|, ~C~0.offset=v_~C~0.offset_Out_2, ULTIMATE.start_create_fresh_uint_array_#res#1.offset=|v_ULTIMATE.start_create_fresh_uint_array_#res#1.offset_Out_6|, ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset=|v_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset_In_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret9#1.offset, #pthreadsForks, ~C~0.base, ULTIMATE.start_main_#t~ret9#1.base, ULTIMATE.start_create_fresh_uint_array_#res#1.base, ULTIMATE.start_main_#t~pre10#1, #memory_int, ~C~0.offset, ULTIMATE.start_create_fresh_uint_array_#res#1.offset] and [417] $Ultimate##0-->L50-5: Formula: (= v_thread1Thread1of1ForFork1_~i~0_1 0) InVars {} OutVars{thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_~i~0] [2022-12-13 11:05:10,306 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:05:10,307 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 90 [2022-12-13 11:05:10,307 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 145 flow [2022-12-13 11:05:10,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:10,307 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:05:10,307 INFO L214 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] [2022-12-13 11:05:10,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:05:10,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:05:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:05:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1738655931, now seen corresponding path program 1 times [2022-12-13 11:05:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:05:10,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683706161] [2022-12-13 11:05:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:05:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:05:10,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:05:10,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683706161] [2022-12-13 11:05:10,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683706161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:05:10,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:05:10,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:05:10,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661026954] [2022-12-13 11:05:10,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:05:10,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:05:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:05:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:05:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:05:10,381 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-13 11:05:10,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:10,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:05:10,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-13 11:05:10,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:05:10,557 INFO L130 PetriNetUnfolder]: 904/1288 cut-off events. [2022-12-13 11:05:10,557 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2022-12-13 11:05:10,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 1288 events. 904/1288 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5225 event pairs, 449 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 2292. Up to 1012 conditions per place. [2022-12-13 11:05:10,562 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 4 changer transitions 30/63 dead transitions. [2022-12-13 11:05:10,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 315 flow [2022-12-13 11:05:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:05:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:05:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2022-12-13 11:05:10,564 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-13 11:05:10,564 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 145 flow. Second operand 5 states and 70 transitions. [2022-12-13 11:05:10,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 315 flow [2022-12-13 11:05:10,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 303 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 11:05:10,566 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 116 flow [2022-12-13 11:05:10,566 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2022-12-13 11:05:10,567 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2022-12-13 11:05:10,567 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:05:10,567 INFO L89 Accepts]: Start accepts. Operand has 42 places, 33 transitions, 116 flow [2022-12-13 11:05:10,568 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:05:10,568 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:05:10,568 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 33 transitions, 116 flow [2022-12-13 11:05:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 116 flow [2022-12-13 11:05:10,574 INFO L130 PetriNetUnfolder]: 13/52 cut-off events. [2022-12-13 11:05:10,574 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:05:10,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 52 events. 13/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 82. Up to 9 conditions per place. [2022-12-13 11:05:10,575 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 33 transitions, 116 flow [2022-12-13 11:05:10,575 INFO L226 LiptonReduction]: Number of co-enabled transitions 260 [2022-12-13 11:05:10,580 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:05:10,581 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 14 [2022-12-13 11:05:10,582 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 116 flow [2022-12-13 11:05:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:10,582 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:05:10,582 INFO L214 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] [2022-12-13 11:05:10,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:05:10,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:05:10,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:05:10,583 INFO L85 PathProgramCache]: Analyzing trace with hash 12397010, now seen corresponding path program 1 times [2022-12-13 11:05:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:05:10,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364298320] [2022-12-13 11:05:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:05:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:05:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:05:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364298320] [2022-12-13 11:05:10,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364298320] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:05:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142098491] [2022-12-13 11:05:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:10,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:05:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:05:10,691 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) [2022-12-13 11:05:10,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:05:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:10,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:05:10,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:05:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:05:10,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:05:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:05:10,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142098491] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 11:05:10,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:05:10,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-13 11:05:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337391273] [2022-12-13 11:05:10,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:05:10,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:05:10,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:05:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:05:10,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:05:10,856 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-13 11:05:10,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:10,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:05:10,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-13 11:05:10,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:05:10,960 INFO L130 PetriNetUnfolder]: 737/1000 cut-off events. [2022-12-13 11:05:10,961 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2022-12-13 11:05:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 1000 events. 737/1000 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3525 event pairs, 158 based on Foata normal form. 66/839 useless extension candidates. Maximal degree in co-relation 2436. Up to 720 conditions per place. [2022-12-13 11:05:10,966 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 40 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2022-12-13 11:05:10,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 246 flow [2022-12-13 11:05:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:05:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:05:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2022-12-13 11:05:10,967 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2022-12-13 11:05:10,967 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 116 flow. Second operand 5 states and 52 transitions. [2022-12-13 11:05:10,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 246 flow [2022-12-13 11:05:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 224 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-13 11:05:10,969 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 119 flow [2022-12-13 11:05:10,969 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2022-12-13 11:05:10,970 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2022-12-13 11:05:10,970 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:05:10,970 INFO L89 Accepts]: Start accepts. Operand has 36 places, 34 transitions, 119 flow [2022-12-13 11:05:10,971 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:05:10,971 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:05:10,971 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 34 transitions, 119 flow [2022-12-13 11:05:10,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 119 flow [2022-12-13 11:05:10,975 INFO L130 PetriNetUnfolder]: 12/44 cut-off events. [2022-12-13 11:05:10,975 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-12-13 11:05:10,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 44 events. 12/44 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 56. Up to 9 conditions per place. [2022-12-13 11:05:10,976 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 34 transitions, 119 flow [2022-12-13 11:05:10,976 INFO L226 LiptonReduction]: Number of co-enabled transitions 266 [2022-12-13 11:05:10,981 ERROR L806 SequenceRule]: Run adaptation not supported for post-scripts [2022-12-13 11:05:12,158 INFO L241 LiptonReduction]: Total number of compositions: 3 [2022-12-13 11:05:12,159 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1189 [2022-12-13 11:05:12,159 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 95 flow [2022-12-13 11:05:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:12,160 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:05:12,160 INFO L214 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] [2022-12-13 11:05:12,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:05:12,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:05:12,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:05:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:05:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2122193255, now seen corresponding path program 1 times [2022-12-13 11:05:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:05:12,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936575919] [2022-12-13 11:05:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:05:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:05:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:05:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:05:12,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:05:12,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936575919] [2022-12-13 11:05:12,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936575919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:05:12,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:05:12,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:05:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567766162] [2022-12-13 11:05:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:05:12,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:05:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:05:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:05:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:05:12,429 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-13 11:05:12,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:12,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:05:12,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-13 11:05:12,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:05:12,475 INFO L130 PetriNetUnfolder]: 180/282 cut-off events. [2022-12-13 11:05:12,475 INFO L131 PetriNetUnfolder]: For 62/192 co-relation queries the response was YES. [2022-12-13 11:05:12,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 282 events. 180/282 cut-off events. For 62/192 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 880 event pairs, 45 based on Foata normal form. 130/326 useless extension candidates. Maximal degree in co-relation 600. Up to 186 conditions per place. [2022-12-13 11:05:12,476 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2022-12-13 11:05:12,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 155 flow [2022-12-13 11:05:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:05:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:05:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-12-13 11:05:12,477 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31896551724137934 [2022-12-13 11:05:12,478 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 95 flow. Second operand 4 states and 37 transitions. [2022-12-13 11:05:12,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 155 flow [2022-12-13 11:05:12,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 139 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 11:05:12,478 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2022-12-13 11:05:12,478 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2022-12-13 11:05:12,480 INFO L295 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2022-12-13 11:05:12,481 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:05:12,481 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 0 transitions, 0 flow [2022-12-13 11:05:12,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-13 11:05:12,482 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:05:12,482 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:05:12,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-13 11:05:12,482 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-13 11:05:12,482 INFO L226 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 11:05:12,482 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:05:12,483 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-13 11:05:12,483 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-13 11:05:12,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:05:12,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 11:05:12,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 11:05:12,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 11:05:12,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 11:05:12,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:05:12,486 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 11:05:12,494 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:05:12,494 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:05:12,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:05:12 BasicIcfg [2022-12-13 11:05:12,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:05:12,503 INFO L158 Benchmark]: Toolchain (without parser) took 9588.29ms. Allocated memory was 205.5MB in the beginning and 331.4MB in the end (delta: 125.8MB). Free memory was 182.3MB in the beginning and 224.1MB in the end (delta: -41.7MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. [2022-12-13 11:05:12,503 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 183.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 11:05:12,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.56ms. Allocated memory is still 205.5MB. Free memory was 182.1MB in the beginning and 169.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 11:05:12,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.19ms. Allocated memory is still 205.5MB. Free memory was 169.0MB in the beginning and 167.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 11:05:12,506 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 205.5MB. Free memory was 167.5MB in the beginning and 165.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 11:05:12,506 INFO L158 Benchmark]: RCFGBuilder took 401.64ms. Allocated memory is still 205.5MB. Free memory was 165.9MB in the beginning and 147.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-13 11:05:12,506 INFO L158 Benchmark]: TraceAbstraction took 8866.72ms. Allocated memory was 205.5MB in the beginning and 331.4MB in the end (delta: 125.8MB). Free memory was 145.4MB in the beginning and 224.1MB in the end (delta: -78.6MB). Peak memory consumption was 48.8MB. Max. memory is 8.0GB. [2022-12-13 11:05:12,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 183.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.56ms. Allocated memory is still 205.5MB. Free memory was 182.1MB in the beginning and 169.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.19ms. Allocated memory is still 205.5MB. Free memory was 169.0MB in the beginning and 167.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 205.5MB. Free memory was 167.5MB in the beginning and 165.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 401.64ms. Allocated memory is still 205.5MB. Free memory was 165.9MB in the beginning and 147.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 8866.72ms. Allocated memory was 205.5MB in the beginning and 331.4MB in the end (delta: 125.8MB). Free memory was 145.4MB in the beginning and 224.1MB in the end (delta: -78.6MB). Peak memory consumption was 48.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 152 PlacesBefore, 33 PlacesAfterwards, 158 TransitionsBefore, 29 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 86 TrivialYvCompositions, 33 ConcurrentYvCompositions, 10 ChoiceCompositions, 129 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 927, independent: 907, independent conditional: 907, independent unconditional: 0, dependent: 20, dependent conditional: 20, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 896, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 896, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 896, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 55, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 927, independent: 24, independent conditional: 24, independent unconditional: 0, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 896, unknown conditional: 896, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 924, Positive cache size: 911, Positive conditional cache size: 911, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 33 PlacesBefore, 33 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, independent: 34, independent conditional: 34, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, independent: 22, independent conditional: 4, independent unconditional: 18, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 24, independent: 22, independent conditional: 4, independent unconditional: 18, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 24, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 38, independent: 12, independent conditional: 12, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 24, unknown conditional: 24, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 22, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 39 PlacesBefore, 39 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 310 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 93, independent: 83, independent conditional: 83, independent unconditional: 0, dependent: 10, dependent conditional: 10, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, independent: 24, independent conditional: 21, independent unconditional: 3, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, independent: 24, independent conditional: 21, independent unconditional: 3, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 93, independent: 59, independent conditional: 59, independent unconditional: 0, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 46, Positive conditional cache size: 46, Positive unconditional cache size: 0, Negative cache size: 4, Negative conditional cache size: 4, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 37 PlacesBefore, 37 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, independent: 18, independent conditional: 18, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, independent: 11, independent conditional: 1, independent unconditional: 10, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, independent: 11, independent conditional: 1, independent unconditional: 10, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21, independent: 7, independent conditional: 7, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 57, Positive conditional cache size: 57, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 36 PlacesBefore, 34 PlacesAfterwards, 34 TransitionsBefore, 30 TransitionsAfterwards, 266 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 68, independent: 62, independent conditional: 62, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, independent: 20, independent conditional: 16, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, independent: 20, independent conditional: 16, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 68, independent: 42, independent conditional: 42, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 77, Positive conditional cache size: 77, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 77, Positive conditional cache size: 77, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 191 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 4 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 536 SizeOfPredicates, 4 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 11:05:12,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...