/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:47:49,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:47:49,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:47:49,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:47:49,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:47:49,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:47:49,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:47:49,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:47:49,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:47:49,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:47:49,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:47:49,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:47:49,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:47:49,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:47:49,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:47:49,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:47:49,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:47:49,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:47:49,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:47:49,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:47:49,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:47:49,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:47:49,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:47:49,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:47:49,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:47:49,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:47:49,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:47:49,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:47:49,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:47:49,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:47:49,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:47:49,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:47:49,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:47:49,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:47:49,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:47:49,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:47:49,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:47:49,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:47:49,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:47:49,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:47:49,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:47:49,488 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-SemanticLbe.epf [2022-12-05 20:47:49,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:47:49,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:47:49,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:47:49,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:47:49,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:47:49,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:47:49,510 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:47:49,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:47:49,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:47:49,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:47:49,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:47:49,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:47:49,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:47:49,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:47:49,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:47:49,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:47:49,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:49,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:47:49,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:47:49,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:47:49,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:47:49,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:47:49,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:47:49,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:47:49,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:47:49,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:47:49,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:47:49,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:47:49,773 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:47:49,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2022-12-05 20:47:50,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:47:50,897 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:47:50,898 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2022-12-05 20:47:50,902 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02e1f23e/98f19c6059924d3ab8701d9cff083e67/FLAG08b300c59 [2022-12-05 20:47:50,912 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02e1f23e/98f19c6059924d3ab8701d9cff083e67 [2022-12-05 20:47:50,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:47:50,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:47:50,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:50,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:47:50,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:47:50,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:50" (1/1) ... [2022-12-05 20:47:50,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea612e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:50, skipping insertion in model container [2022-12-05 20:47:50,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:50" (1/1) ... [2022-12-05 20:47:50,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:47:50,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:47:51,110 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/array-eq-trans.wvr.c[2737,2750] [2022-12-05 20:47:51,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:51,134 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:47:51,170 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/array-eq-trans.wvr.c[2737,2750] [2022-12-05 20:47:51,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:51,183 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:47:51,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51 WrapperNode [2022-12-05 20:47:51,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:51,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:51,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:47:51,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:47:51,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,235 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 204 [2022-12-05 20:47:51,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:51,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:47:51,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:47:51,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:47:51,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:47:51,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:47:51,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:47:51,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:47:51,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (1/1) ... [2022-12-05 20:47:51,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:51,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:51,324 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) [2022-12-05 20:47:51,347 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 [2022-12-05 20:47:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 20:47:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 20:47:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 20:47:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:47:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 20:47:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:47:51,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:47:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:47:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:47:51,374 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:47:51,474 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:47:51,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:47:51,966 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:47:51,973 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:47:51,974 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 20:47:51,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:51 BoogieIcfgContainer [2022-12-05 20:47:51,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:47:51,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:47:51,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:47:51,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:47:51,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:47:50" (1/3) ... [2022-12-05 20:47:51,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b3ad17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:51, skipping insertion in model container [2022-12-05 20:47:51,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:51" (2/3) ... [2022-12-05 20:47:51,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b3ad17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:51, skipping insertion in model container [2022-12-05 20:47:51,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:51" (3/3) ... [2022-12-05 20:47:52,007 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-12-05 20:47:52,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:47:52,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:47:52,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:47:52,152 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 20:47:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 281 transitions, 586 flow [2022-12-05 20:47:52,246 INFO L130 PetriNetUnfolder]: 30/278 cut-off events. [2022-12-05 20:47:52,246 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 20:47:52,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 30/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 238 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 183. Up to 3 conditions per place. [2022-12-05 20:47:52,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 281 transitions, 586 flow [2022-12-05 20:47:52,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 554 flow [2022-12-05 20:47:52,257 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:47:52,273 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 268 transitions, 554 flow [2022-12-05 20:47:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 554 flow [2022-12-05 20:47:52,317 INFO L130 PetriNetUnfolder]: 30/268 cut-off events. [2022-12-05 20:47:52,317 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 20:47:52,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 268 events. 30/268 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 235 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 183. Up to 3 conditions per place. [2022-12-05 20:47:52,321 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 268 transitions, 554 flow [2022-12-05 20:47:52,321 INFO L188 LiptonReduction]: Number of co-enabled transitions 2688 [2022-12-05 20:48:01,481 INFO L203 LiptonReduction]: Total number of compositions: 235 [2022-12-05 20:48:01,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:48:01,513 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cf97c23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:48:01,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 20:48:01,524 INFO L130 PetriNetUnfolder]: 8/28 cut-off events. [2022-12-05 20:48:01,524 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 20:48:01,524 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:01,525 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:48:01,526 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)] === [2022-12-05 20:48:01,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1493623861, now seen corresponding path program 1 times [2022-12-05 20:48:01,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:01,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820348711] [2022-12-05 20:48:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:01,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:48:02,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820348711] [2022-12-05 20:48:02,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820348711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:48:02,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:48:02,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:48:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396008816] [2022-12-05 20:48:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:48:02,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:48:02,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:48:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:48:02,102 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:02,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 76 flow. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:02,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:02,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:02,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:02,239 INFO L130 PetriNetUnfolder]: 385/548 cut-off events. [2022-12-05 20:48:02,239 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-05 20:48:02,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 548 events. 385/548 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1448 event pairs, 186 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 484. Up to 289 conditions per place. [2022-12-05 20:48:02,248 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 28 selfloop transitions, 2 changer transitions 25/55 dead transitions. [2022-12-05 20:48:02,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 55 transitions, 256 flow [2022-12-05 20:48:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:48:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:48:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2022-12-05 20:48:02,258 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2022-12-05 20:48:02,259 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 76 flow. Second operand 4 states and 57 transitions. [2022-12-05 20:48:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 55 transitions, 256 flow [2022-12-05 20:48:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 55 transitions, 232 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 20:48:02,264 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 80 flow [2022-12-05 20:48:02,265 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2022-12-05 20:48:02,268 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2022-12-05 20:48:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 80 flow [2022-12-05 20:48:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:02,269 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:02,269 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:48:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:48:02,269 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)] === [2022-12-05 20:48:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1796768195, now seen corresponding path program 1 times [2022-12-05 20:48:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:02,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812018129] [2022-12-05 20:48:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:48:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812018129] [2022-12-05 20:48:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812018129] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:02,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137447841] [2022-12-05 20:48:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:02,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:48:02,473 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) [2022-12-05 20:48:02,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 20:48:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:02,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 20:48:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:48:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:48:02,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:48:02,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:02,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-12-05 20:48:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:48:02,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137447841] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:02,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 20:48:02,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 9 [2022-12-05 20:48:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623334827] [2022-12-05 20:48:02,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:48:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:48:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:02,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:48:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-05 20:48:02,864 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:02,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 80 flow. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:02,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:02,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:02,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:03,033 INFO L130 PetriNetUnfolder]: 400/578 cut-off events. [2022-12-05 20:48:03,033 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-12-05 20:48:03,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 578 events. 400/578 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1780 event pairs, 93 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1241. Up to 268 conditions per place. [2022-12-05 20:48:03,035 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 4 changer transitions 17/65 dead transitions. [2022-12-05 20:48:03,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 65 transitions, 296 flow [2022-12-05 20:48:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:48:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:48:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2022-12-05 20:48:03,041 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45517241379310347 [2022-12-05 20:48:03,042 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 80 flow. Second operand 5 states and 66 transitions. [2022-12-05 20:48:03,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 65 transitions, 296 flow [2022-12-05 20:48:03,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 65 transitions, 282 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-05 20:48:03,044 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 94 flow [2022-12-05 20:48:03,045 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-12-05 20:48:03,045 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2022-12-05 20:48:03,045 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 94 flow [2022-12-05 20:48:03,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:03,046 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:03,046 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:48:03,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 20:48:03,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:03,260 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)] === [2022-12-05 20:48:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1948705535, now seen corresponding path program 1 times [2022-12-05 20:48:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:03,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319760798] [2022-12-05 20:48:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:48:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319760798] [2022-12-05 20:48:03,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319760798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:48:03,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:48:03,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:48:03,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502421701] [2022-12-05 20:48:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:48:03,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:48:03,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:48:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:48:03,360 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:03,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:03,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:03,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:03,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:03,484 INFO L130 PetriNetUnfolder]: 381/567 cut-off events. [2022-12-05 20:48:03,484 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-05 20:48:03,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 567 events. 381/567 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 199 based on Foata normal form. 40/443 useless extension candidates. Maximal degree in co-relation 1287. Up to 459 conditions per place. [2022-12-05 20:48:03,486 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 29 selfloop transitions, 3 changer transitions 29/61 dead transitions. [2022-12-05 20:48:03,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 282 flow [2022-12-05 20:48:03,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:48:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:48:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2022-12-05 20:48:03,489 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3505747126436782 [2022-12-05 20:48:03,489 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 94 flow. Second operand 6 states and 61 transitions. [2022-12-05 20:48:03,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 282 flow [2022-12-05 20:48:03,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 61 transitions, 275 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-05 20:48:03,490 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 107 flow [2022-12-05 20:48:03,490 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2022-12-05 20:48:03,491 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2022-12-05 20:48:03,491 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 107 flow [2022-12-05 20:48:03,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:03,492 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:03,492 INFO L213 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] [2022-12-05 20:48:03,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:48:03,492 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)] === [2022-12-05 20:48:03,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1851797942, now seen corresponding path program 1 times [2022-12-05 20:48:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:03,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184363993] [2022-12-05 20:48:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:48:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:03,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184363993] [2022-12-05 20:48:03,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184363993] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:03,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391114360] [2022-12-05 20:48:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:48:03,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:48:03,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 20:48:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:03,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 20:48:03,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:48:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:48:03,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:48:03,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:03,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-12-05 20:48:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:48:03,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391114360] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:03,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 20:48:03,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 11 [2022-12-05 20:48:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469583766] [2022-12-05 20:48:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:48:03,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:48:03,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:48:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-05 20:48:03,915 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:03,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 107 flow. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:03,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:03,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:03,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:04,093 INFO L130 PetriNetUnfolder]: 734/1100 cut-off events. [2022-12-05 20:48:04,094 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2022-12-05 20:48:04,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 1100 events. 734/1100 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4034 event pairs, 173 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 2593. Up to 380 conditions per place. [2022-12-05 20:48:04,098 INFO L137 encePairwiseOnDemand]: 22/29 looper letters, 61 selfloop transitions, 6 changer transitions 16/83 dead transitions. [2022-12-05 20:48:04,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 83 transitions, 429 flow [2022-12-05 20:48:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:48:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:48:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2022-12-05 20:48:04,099 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3891625615763547 [2022-12-05 20:48:04,099 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 107 flow. Second operand 7 states and 79 transitions. [2022-12-05 20:48:04,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 83 transitions, 429 flow [2022-12-05 20:48:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 83 transitions, 405 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-05 20:48:04,101 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 123 flow [2022-12-05 20:48:04,101 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2022-12-05 20:48:04,102 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2022-12-05 20:48:04,102 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 123 flow [2022-12-05 20:48:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:04,102 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:04,102 INFO L213 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] [2022-12-05 20:48:04,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 20:48:04,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-05 20:48:04,307 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)] === [2022-12-05 20:48:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1836114166, now seen corresponding path program 1 times [2022-12-05 20:48:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:04,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857633381] [2022-12-05 20:48:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:04,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857633381] [2022-12-05 20:48:04,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857633381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:48:04,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:48:04,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:48:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530300911] [2022-12-05 20:48:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:48:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:48:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:48:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:48:04,410 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:04,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:04,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:04,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:04,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:04,579 INFO L130 PetriNetUnfolder]: 699/1067 cut-off events. [2022-12-05 20:48:04,579 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2022-12-05 20:48:04,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 1067 events. 699/1067 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3828 event pairs, 210 based on Foata normal form. 38/978 useless extension candidates. Maximal degree in co-relation 2713. Up to 575 conditions per place. [2022-12-05 20:48:04,583 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 48 selfloop transitions, 4 changer transitions 16/68 dead transitions. [2022-12-05 20:48:04,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 357 flow [2022-12-05 20:48:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:48:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:48:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2022-12-05 20:48:04,585 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4413793103448276 [2022-12-05 20:48:04,585 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 123 flow. Second operand 5 states and 64 transitions. [2022-12-05 20:48:04,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 357 flow [2022-12-05 20:48:04,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 349 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 20:48:04,589 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 135 flow [2022-12-05 20:48:04,589 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2022-12-05 20:48:04,591 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2022-12-05 20:48:04,591 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 135 flow [2022-12-05 20:48:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:04,591 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:04,591 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:48:04,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:48:04,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 20:48:04,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1161227274, now seen corresponding path program 1 times [2022-12-05 20:48:04,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:04,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888610013] [2022-12-05 20:48:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888610013] [2022-12-05 20:48:05,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888610013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661494013] [2022-12-05 20:48:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:05,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:48:05,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:48:05,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 20:48:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:05,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-05 20:48:05,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:48:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:05,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:48:05,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:05,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 284 [2022-12-05 20:48:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:24,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661494013] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:24,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 20:48:24,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 13 [2022-12-05 20:48:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045377370] [2022-12-05 20:48:24,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:48:24,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:48:24,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:48:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-12-05 20:48:24,580 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:24,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 135 flow. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:24,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:24,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:24,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:24,710 INFO L130 PetriNetUnfolder]: 786/1174 cut-off events. [2022-12-05 20:48:24,710 INFO L131 PetriNetUnfolder]: For 743/743 co-relation queries the response was YES. [2022-12-05 20:48:24,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1174 events. 786/1174 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4351 event pairs, 133 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 3111. Up to 995 conditions per place. [2022-12-05 20:48:24,715 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 48 selfloop transitions, 4 changer transitions 1/53 dead transitions. [2022-12-05 20:48:24,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 297 flow [2022-12-05 20:48:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:48:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:48:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-12-05 20:48:24,716 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-12-05 20:48:24,716 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 135 flow. Second operand 3 states and 48 transitions. [2022-12-05 20:48:24,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 297 flow [2022-12-05 20:48:24,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 288 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 20:48:24,718 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 163 flow [2022-12-05 20:48:24,718 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-12-05 20:48:24,719 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2022-12-05 20:48:24,719 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 163 flow [2022-12-05 20:48:24,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:24,719 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:24,719 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:48:24,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 20:48:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:24,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 20:48:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1923014394, now seen corresponding path program 1 times [2022-12-05 20:48:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:24,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633550498] [2022-12-05 20:48:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:25,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633550498] [2022-12-05 20:48:25,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633550498] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:25,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906603385] [2022-12-05 20:48:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:25,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:25,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:48:25,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:48:25,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 20:48:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:25,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 20:48:25,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:48:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:25,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:48:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:25,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906603385] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:48:25,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:48:25,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-12-05 20:48:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202054817] [2022-12-05 20:48:25,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:48:25,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 20:48:25,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:48:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 20:48:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-05 20:48:25,468 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:48:25,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 163 flow. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:25,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:48:25,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:48:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:48:25,900 INFO L130 PetriNetUnfolder]: 2373/3582 cut-off events. [2022-12-05 20:48:25,900 INFO L131 PetriNetUnfolder]: For 3399/3399 co-relation queries the response was YES. [2022-12-05 20:48:25,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9990 conditions, 3582 events. 2373/3582 cut-off events. For 3399/3399 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17114 event pairs, 1002 based on Foata normal form. 116/3696 useless extension candidates. Maximal degree in co-relation 5152. Up to 999 conditions per place. [2022-12-05 20:48:25,913 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 85 selfloop transitions, 7 changer transitions 20/112 dead transitions. [2022-12-05 20:48:25,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 112 transitions, 679 flow [2022-12-05 20:48:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:48:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:48:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2022-12-05 20:48:25,916 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45320197044334976 [2022-12-05 20:48:25,916 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 163 flow. Second operand 7 states and 92 transitions. [2022-12-05 20:48:25,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 112 transitions, 679 flow [2022-12-05 20:48:25,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 112 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:48:25,921 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 217 flow [2022-12-05 20:48:25,921 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2022-12-05 20:48:25,921 INFO L294 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2022-12-05 20:48:25,921 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 217 flow [2022-12-05 20:48:25,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:48:25,922 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:48:25,922 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:48:25,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-05 20:48:26,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:26,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 20:48:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:48:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1630419178, now seen corresponding path program 1 times [2022-12-05 20:48:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:48:26,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696215394] [2022-12-05 20:48:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:48:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 20:48:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:48:26,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696215394] [2022-12-05 20:48:26,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696215394] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:48:26,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056726571] [2022-12-05 20:48:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:48:26,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:48:26,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:48:26,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:48:26,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 20:48:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:48:26,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-05 20:48:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:48:26,967 INFO L321 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2022-12-05 20:48:26,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2022-12-05 20:48:27,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:48:27,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:48:27,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:48:27,049 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-12-05 20:48:27,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 45 [2022-12-05 20:48:27,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-05 20:48:27,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:48:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:48:27,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:48:27,225 INFO L321 Elim1Store]: treesize reduction 68, result has 23.6 percent of original size [2022-12-05 20:48:27,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 31 treesize of output 39 [2022-12-05 20:48:27,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-05 20:48:27,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 20:48:27,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 20:48:27,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 20:48:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:48:27,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:48:29,256 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-12-05 20:48:29,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 107 [2022-12-05 20:48:29,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:29,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64261 treesize of output 59408 [2022-12-05 20:48:29,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:29,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59243 treesize of output 51891 [2022-12-05 20:48:29,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:29,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51819 treesize of output 37043 [2022-12-05 20:48:30,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:48:30,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36971 treesize of output 33331 Received shutdown request... [2022-12-05 21:02:12,995 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-12-05 21:02:12,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 21:02:12,998 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 21:02:13,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-05 21:02:13,008 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 21:02:13,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:02:13,204 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-12-05 21:02:13,205 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 21:02:13,205 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 21:02:13,205 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 21:02:13,206 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:02:13,209 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:02:13,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:02:13,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:02:13 BasicIcfg [2022-12-05 21:02:13,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:02:13,214 INFO L158 Benchmark]: Toolchain (without parser) took 862299.35ms. Allocated memory was 232.8MB in the beginning and 868.2MB in the end (delta: 635.4MB). Free memory was 209.0MB in the beginning and 577.1MB in the end (delta: -368.1MB). Peak memory consumption was 537.4MB. Max. memory is 8.0GB. [2022-12-05 21:02:13,214 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 232.8MB. Free memory was 208.7MB in the beginning and 208.5MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:02:13,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.46ms. Allocated memory is still 232.8MB. Free memory was 208.5MB in the beginning and 196.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 21:02:13,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.24ms. Allocated memory is still 232.8MB. Free memory was 196.4MB in the beginning and 194.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:02:13,215 INFO L158 Benchmark]: Boogie Preprocessor took 45.89ms. Allocated memory is still 232.8MB. Free memory was 194.3MB in the beginning and 192.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:02:13,215 INFO L158 Benchmark]: RCFGBuilder took 709.91ms. Allocated memory is still 232.8MB. Free memory was 192.2MB in the beginning and 169.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 21:02:13,216 INFO L158 Benchmark]: TraceAbstraction took 861218.43ms. Allocated memory was 232.8MB in the beginning and 868.2MB in the end (delta: 635.4MB). Free memory was 168.6MB in the beginning and 577.1MB in the end (delta: -408.5MB). Peak memory consumption was 497.5MB. Max. memory is 8.0GB. [2022-12-05 21:02:13,218 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 232.8MB. Free memory was 208.7MB in the beginning and 208.5MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.46ms. Allocated memory is still 232.8MB. Free memory was 208.5MB in the beginning and 196.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.24ms. Allocated memory is still 232.8MB. Free memory was 196.4MB in the beginning and 194.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.89ms. Allocated memory is still 232.8MB. Free memory was 194.3MB in the beginning and 192.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 709.91ms. Allocated memory is still 232.8MB. Free memory was 192.2MB in the beginning and 169.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 861218.43ms. Allocated memory was 232.8MB in the beginning and 868.2MB in the end (delta: 635.4MB). Free memory was 168.6MB in the beginning and 577.1MB in the end (delta: -408.5MB). Peak memory consumption was 497.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 248 PlacesBefore, 31 PlacesAfterwards, 268 TransitionsBefore, 29 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 171 TrivialYvCompositions, 46 ConcurrentYvCompositions, 18 ChoiceCompositions, 235 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1777, independent: 1742, independent conditional: 1742, independent unconditional: 0, dependent: 35, dependent conditional: 35, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1777, independent: 1742, independent conditional: 0, independent unconditional: 1742, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1777, independent: 1742, independent conditional: 0, independent unconditional: 1742, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1777, independent: 1742, independent conditional: 0, independent unconditional: 1742, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1583, independent: 1562, independent conditional: 0, independent unconditional: 1562, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1583, independent: 1562, independent conditional: 0, independent unconditional: 1562, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1777, independent: 180, independent conditional: 0, independent unconditional: 180, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1583, unknown conditional: 0, unknown unconditional: 1583] , Statistics on independence cache: Total cache size (in pairs): 2787, Positive cache size: 2766, Positive conditional cache size: 0, Positive unconditional cache size: 2766, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 297 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: 861.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 534 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 534 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 967 IncrementalHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 0 mSDtfsCounter, 967 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 144 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=7, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 4267 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1143 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 21/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown