/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:22:33,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:22:33,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:22:33,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:22:33,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:22:33,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:22:33,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:22:33,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:22:33,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:22:33,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:22:33,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:22:33,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:22:33,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:22:33,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:22:33,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:22:33,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:22:33,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:22:33,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:22:33,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:22:33,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:22:33,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:22:33,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:22:33,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:22:33,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:22:33,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:22:33,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:22:33,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:22:33,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:22:33,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:22:33,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:22:33,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:22:33,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:22:33,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:22:33,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:22:33,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:22:33,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:22:33,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:22:33,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:22:33,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:22:33,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:22:33,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:22:33,317 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-NoLbe.epf [2022-09-20 21:22:33,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:22:33,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:22:33,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:22:33,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:22:33,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:22:33,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:22:33,344 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:22:33,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:22:33,344 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:22:33,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:22:33,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:22:33,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:22:33,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:22:33,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:22:33,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:22:33,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:22:33,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:22:33,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:22:33,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:22:33,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:22:33,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:22:33,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:22:33,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:22:33,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:22:33,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:22:33,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:22:33,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:22:33,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:22:33,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:22:33,348 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:22:33,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:22:33,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:22:33,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:22:33,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:22:33,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:22:33,577 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:22:33,577 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:22:33,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-09-20 21:22:33,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7385c16e7/fb4ff13ef8d2468d8233dab91b582b4e/FLAGd0ed6092d [2022-09-20 21:22:33,977 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:22:33,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-09-20 21:22:33,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7385c16e7/fb4ff13ef8d2468d8233dab91b582b4e/FLAGd0ed6092d [2022-09-20 21:22:34,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7385c16e7/fb4ff13ef8d2468d8233dab91b582b4e [2022-09-20 21:22:34,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:22:34,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:22:34,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:22:34,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:22:34,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:22:34,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea7ee0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34, skipping insertion in model container [2022-09-20 21:22:34,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:22:34,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:22:34,559 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-09-20 21:22:34,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:22:34,573 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:22:34,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-09-20 21:22:34,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:22:34,607 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:22:34,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34 WrapperNode [2022-09-20 21:22:34,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:22:34,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:22:34,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:22:34,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:22:34,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,648 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-09-20 21:22:34,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:22:34,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:22:34,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:22:34,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:22:34,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:22:34,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:22:34,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:22:34,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:22:34,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (1/1) ... [2022-09-20 21:22:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:22:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:22:34,719 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) [2022-09-20 21:22:34,725 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 [2022-09-20 21:22:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:22:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:22:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:22:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:22:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:22:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:22:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:22:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:22:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:22:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:22:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:22:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:22:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:22:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:22:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:22:34,751 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:22:34,816 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:22:34,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:22:35,071 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:22:35,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:22:35,081 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-20 21:22:35,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:22:35 BoogieIcfgContainer [2022-09-20 21:22:35,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:22:35,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:22:35,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:22:35,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:22:35,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:22:34" (1/3) ... [2022-09-20 21:22:35,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6a0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:22:35, skipping insertion in model container [2022-09-20 21:22:35,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:22:34" (2/3) ... [2022-09-20 21:22:35,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6a0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:22:35, skipping insertion in model container [2022-09-20 21:22:35,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:22:35" (3/3) ... [2022-09-20 21:22:35,091 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-09-20 21:22:35,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:22:35,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:22:35,114 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:22:35,213 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 21:22:35,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2022-09-20 21:22:35,382 INFO L130 PetriNetUnfolder]: 17/209 cut-off events. [2022-09-20 21:22:35,383 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:22:35,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-09-20 21:22:35,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2022-09-20 21:22:35,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2022-09-20 21:22:35,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:22:35,420 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;@f2f421c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:22:35,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 21:22:35,474 INFO L130 PetriNetUnfolder]: 17/197 cut-off events. [2022-09-20 21:22:35,475 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:22:35,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:22:35,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:22:35,477 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)] === [2022-09-20 21:22:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:22:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash -544391092, now seen corresponding path program 1 times [2022-09-20 21:22:35,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:22:35,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445807196] [2022-09-20 21:22:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:22:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:22:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:22:35,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445807196] [2022-09-20 21:22:35,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445807196] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:22:35,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:22:35,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:22:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731962211] [2022-09-20 21:22:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:22:35,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:22:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:22:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:22:35,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:22:35,873 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 212 [2022-09-20 21:22:35,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 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) [2022-09-20 21:22:35,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:22:35,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 212 [2022-09-20 21:22:35,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:22:35,945 INFO L130 PetriNetUnfolder]: 5/186 cut-off events. [2022-09-20 21:22:35,945 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-20 21:22:35,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 186 events. 5/186 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 18/192 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2022-09-20 21:22:35,949 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 6 selfloop transitions, 0 changer transitions 7/186 dead transitions. [2022-09-20 21:22:35,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 402 flow [2022-09-20 21:22:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:22:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:22:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 404 transitions. [2022-09-20 21:22:35,966 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2022-09-20 21:22:35,967 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 404 transitions. [2022-09-20 21:22:35,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 404 transitions. [2022-09-20 21:22:35,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:22:35,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 404 transitions. [2022-09-20 21:22:35,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 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) [2022-09-20 21:22:35,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2022-09-20 21:22:35,984 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2022-09-20 21:22:35,986 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 2 states and 404 transitions. [2022-09-20 21:22:35,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 402 flow [2022-09-20 21:22:35,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:22:35,995 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 364 flow [2022-09-20 21:22:35,997 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2022-09-20 21:22:36,004 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -5 predicate places. [2022-09-20 21:22:36,004 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 364 flow [2022-09-20 21:22:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 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) [2022-09-20 21:22:36,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:22:36,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:22:36,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:22:36,006 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)] === [2022-09-20 21:22:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:22:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1340485429, now seen corresponding path program 1 times [2022-09-20 21:22:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:22:36,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924381299] [2022-09-20 21:22:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:22:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:22:36,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:22:36,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924381299] [2022-09-20 21:22:36,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924381299] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:22:36,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:22:36,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:22:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179646787] [2022-09-20 21:22:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:22:36,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:22:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:22:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:22:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:22:36,405 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 212 [2022-09-20 21:22:36,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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) [2022-09-20 21:22:36,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:22:36,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 212 [2022-09-20 21:22:36,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:22:36,610 INFO L130 PetriNetUnfolder]: 281/698 cut-off events. [2022-09-20 21:22:36,612 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-09-20 21:22:36,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 698 events. 281/698 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2623 event pairs, 65 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 1139. Up to 238 conditions per place. [2022-09-20 21:22:36,625 INFO L137 encePairwiseOnDemand]: 205/212 looper letters, 52 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2022-09-20 21:22:36,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 186 transitions, 496 flow [2022-09-20 21:22:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 21:22:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 21:22:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 905 transitions. [2022-09-20 21:22:36,629 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7114779874213837 [2022-09-20 21:22:36,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 905 transitions. [2022-09-20 21:22:36,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 905 transitions. [2022-09-20 21:22:36,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:22:36,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 905 transitions. [2022-09-20 21:22:36,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 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) [2022-09-20 21:22:36,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 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) [2022-09-20 21:22:36,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 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) [2022-09-20 21:22:36,637 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 364 flow. Second operand 6 states and 905 transitions. [2022-09-20 21:22:36,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 186 transitions, 496 flow [2022-09-20 21:22:36,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 186 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:22:36,644 INFO L231 Difference]: Finished difference. Result has 186 places, 180 transitions, 389 flow [2022-09-20 21:22:36,644 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=186, PETRI_TRANSITIONS=180} [2022-09-20 21:22:36,645 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -5 predicate places. [2022-09-20 21:22:36,645 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 180 transitions, 389 flow [2022-09-20 21:22:36,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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) [2022-09-20 21:22:36,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:22:36,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:22:36,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:22:36,646 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)] === [2022-09-20 21:22:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:22:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 101677721, now seen corresponding path program 1 times [2022-09-20 21:22:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:22:36,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865327653] [2022-09-20 21:22:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:36,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:22:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:22:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:22:36,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865327653] [2022-09-20 21:22:36,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865327653] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:22:36,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:22:36,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 21:22:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295142656] [2022-09-20 21:22:36,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:22:36,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:22:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:22:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:22:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-09-20 21:22:36,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 212 [2022-09-20 21:22:36,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 180 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 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) [2022-09-20 21:22:36,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:22:36,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 212 [2022-09-20 21:22:36,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:22:37,341 INFO L130 PetriNetUnfolder]: 283/725 cut-off events. [2022-09-20 21:22:37,341 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-09-20 21:22:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 725 events. 283/725 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2584 event pairs, 128 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 1324. Up to 385 conditions per place. [2022-09-20 21:22:37,347 INFO L137 encePairwiseOnDemand]: 196/212 looper letters, 73 selfloop transitions, 11 changer transitions 23/217 dead transitions. [2022-09-20 21:22:37,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 217 transitions, 683 flow [2022-09-20 21:22:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:22:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:22:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2022-09-20 21:22:37,350 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6362683438155137 [2022-09-20 21:22:37,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2022-09-20 21:22:37,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2022-09-20 21:22:37,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:22:37,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2022-09-20 21:22:37,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 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) [2022-09-20 21:22:37,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 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) [2022-09-20 21:22:37,358 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 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) [2022-09-20 21:22:37,358 INFO L175 Difference]: Start difference. First operand has 186 places, 180 transitions, 389 flow. Second operand 9 states and 1214 transitions. [2022-09-20 21:22:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 217 transitions, 683 flow [2022-09-20 21:22:37,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 217 transitions, 671 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:22:37,369 INFO L231 Difference]: Finished difference. Result has 194 places, 182 transitions, 427 flow [2022-09-20 21:22:37,370 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=427, PETRI_PLACES=194, PETRI_TRANSITIONS=182} [2022-09-20 21:22:37,373 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 3 predicate places. [2022-09-20 21:22:37,373 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 182 transitions, 427 flow [2022-09-20 21:22:37,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 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) [2022-09-20 21:22:37,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:22:37,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:22:37,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:22:37,374 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)] === [2022-09-20 21:22:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:22:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1293348198, now seen corresponding path program 1 times [2022-09-20 21:22:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:22:37,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699009909] [2022-09-20 21:22:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:22:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:22:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:22:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699009909] [2022-09-20 21:22:37,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699009909] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:22:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133290909] [2022-09-20 21:22:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:37,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:22:37,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:22:37,533 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) [2022-09-20 21:22:37,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:22:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:37,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:22:37,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:22:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:22:37,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:22:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:22:38,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133290909] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:22:38,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:22:38,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 21:22:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632917168] [2022-09-20 21:22:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:22:38,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:22:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:22:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:22:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:22:38,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 212 [2022-09-20 21:22:38,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 182 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 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) [2022-09-20 21:22:38,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:22:38,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 212 [2022-09-20 21:22:38,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:22:38,316 INFO L130 PetriNetUnfolder]: 51/345 cut-off events. [2022-09-20 21:22:38,317 INFO L131 PetriNetUnfolder]: For 101/111 co-relation queries the response was YES. [2022-09-20 21:22:38,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 345 events. 51/345 cut-off events. For 101/111 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 844 event pairs, 23 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 569. Up to 66 conditions per place. [2022-09-20 21:22:38,320 INFO L137 encePairwiseOnDemand]: 204/212 looper letters, 46 selfloop transitions, 7 changer transitions 0/189 dead transitions. [2022-09-20 21:22:38,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 189 transitions, 558 flow [2022-09-20 21:22:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:22:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:22:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2022-09-20 21:22:38,323 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7695417789757413 [2022-09-20 21:22:38,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2022-09-20 21:22:38,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2022-09-20 21:22:38,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:22:38,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2022-09-20 21:22:38,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 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) [2022-09-20 21:22:38,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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) [2022-09-20 21:22:38,334 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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) [2022-09-20 21:22:38,334 INFO L175 Difference]: Start difference. First operand has 194 places, 182 transitions, 427 flow. Second operand 7 states and 1142 transitions. [2022-09-20 21:22:38,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 189 transitions, 558 flow [2022-09-20 21:22:38,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 189 transitions, 532 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-20 21:22:38,340 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 435 flow [2022-09-20 21:22:38,340 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2022-09-20 21:22:38,342 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 3 predicate places. [2022-09-20 21:22:38,342 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 435 flow [2022-09-20 21:22:38,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 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) [2022-09-20 21:22:38,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:22:38,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:22:38,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 21:22:38,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:22:38,562 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)] === [2022-09-20 21:22:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:22:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash -460638022, now seen corresponding path program 1 times [2022-09-20 21:22:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:22:38,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783701663] [2022-09-20 21:22:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:22:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:22:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:22:40,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783701663] [2022-09-20 21:22:40,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783701663] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:22:40,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024413511] [2022-09-20 21:22:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:22:40,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:22:40,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:22:40,016 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) [2022-09-20 21:22:40,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:22:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:22:40,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 82 conjunts are in the unsatisfiable core [2022-09-20 21:22:40,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:22:40,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:22:40,236 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-20 21:22:40,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-20 21:22:40,303 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-20 21:22:40,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-09-20 21:22:40,725 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-09-20 21:22:40,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2022-09-20 21:22:41,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 21:22:41,986 INFO L356 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-09-20 21:22:41,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 41 [2022-09-20 21:22:42,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:22:42,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-20 21:22:42,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:22:43,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:22:43,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:22:43,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-09-20 21:22:44,635 INFO L356 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-09-20 21:22:44,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 16 [2022-09-20 21:22:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:22:44,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:22:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:22:55,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024413511] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:22:55,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:22:55,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 40, 19] total 84 [2022-09-20 21:22:55,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195871516] [2022-09-20 21:22:55,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:22:55,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-09-20 21:22:55,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:22:55,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-09-20 21:22:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6693, Unknown=11, NotChecked=0, Total=6972 [2022-09-20 21:22:55,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 212 [2022-09-20 21:22:55,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 435 flow. Second operand has 84 states, 84 states have (on average 72.53571428571429) internal successors, (6093), 84 states have internal predecessors, (6093), 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) [2022-09-20 21:22:55,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:22:55,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 212 [2022-09-20 21:22:55,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:23:27,997 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 115 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:24:09,933 WARN L233 SmtUtils]: Spent 15.46s on a formula simplification. DAG size of input: 94 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:25:01,760 WARN L233 SmtUtils]: Spent 17.27s on a formula simplification. DAG size of input: 74 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:26:50,909 INFO L130 PetriNetUnfolder]: 39028/67395 cut-off events. [2022-09-20 21:26:50,909 INFO L131 PetriNetUnfolder]: For 24758/31789 co-relation queries the response was YES. [2022-09-20 21:26:51,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149179 conditions, 67395 events. 39028/67395 cut-off events. For 24758/31789 co-relation queries the response was YES. Maximal size of possible extension queue 2549. Compared 627751 event pairs, 9401 based on Foata normal form. 7047/70807 useless extension candidates. Maximal degree in co-relation 149169. Up to 6279 conditions per place. [2022-09-20 21:26:51,442 INFO L137 encePairwiseOnDemand]: 142/212 looper letters, 2058 selfloop transitions, 1252 changer transitions 341/3713 dead transitions. [2022-09-20 21:26:51,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 3713 transitions, 17164 flow [2022-09-20 21:26:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 397 states. [2022-09-20 21:26:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2022-09-20 21:26:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 30911 transitions. [2022-09-20 21:26:51,512 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3672710422508436 [2022-09-20 21:26:51,512 INFO L72 ComplementDD]: Start complementDD. Operand 397 states and 30911 transitions. [2022-09-20 21:26:51,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 397 states and 30911 transitions. [2022-09-20 21:26:51,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:26:51,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 397 states and 30911 transitions. [2022-09-20 21:26:51,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 398 states, 397 states have (on average 77.86146095717883) internal successors, (30911), 397 states have internal predecessors, (30911), 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) [2022-09-20 21:26:51,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 398 states, 398 states have (on average 212.0) internal successors, (84376), 398 states have internal predecessors, (84376), 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) [2022-09-20 21:26:51,739 INFO L81 ComplementDD]: Finished complementDD. Result has 398 states, 398 states have (on average 212.0) internal successors, (84376), 398 states have internal predecessors, (84376), 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) [2022-09-20 21:26:51,739 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 435 flow. Second operand 397 states and 30911 transitions. [2022-09-20 21:26:51,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 3713 transitions, 17164 flow [2022-09-20 21:26:51,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 3713 transitions, 17007 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:26:51,891 INFO L231 Difference]: Finished difference. Result has 918 places, 1644 transitions, 11089 flow [2022-09-20 21:26:51,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=397, PETRI_FLOW=11089, PETRI_PLACES=918, PETRI_TRANSITIONS=1644} [2022-09-20 21:26:51,893 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 727 predicate places. [2022-09-20 21:26:51,893 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 1644 transitions, 11089 flow [2022-09-20 21:26:51,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 72.53571428571429) internal successors, (6093), 84 states have internal predecessors, (6093), 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) [2022-09-20 21:26:51,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:26:51,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:26:51,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:26:52,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:26:52,112 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)] === [2022-09-20 21:26:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:26:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2131638282, now seen corresponding path program 2 times [2022-09-20 21:26:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:26:52,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012003776] [2022-09-20 21:26:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:26:52,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:26:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:26:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:26:54,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:26:54,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012003776] [2022-09-20 21:26:54,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012003776] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:26:54,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99582897] [2022-09-20 21:26:54,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:26:54,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:26:54,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:26:54,328 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) [2022-09-20 21:26:54,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:26:54,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:26:54,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:26:54,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 66 conjunts are in the unsatisfiable core [2022-09-20 21:26:54,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:26:54,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:26:54,871 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 21:26:54,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-20 21:26:55,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-20 21:26:55,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:26:55,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-09-20 21:26:56,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:26:56,640 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-09-20 21:26:56,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 13 [2022-09-20 21:26:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:26:56,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:27:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:27:02,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99582897] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:27:02,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:27:02,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 29, 18] total 82 [2022-09-20 21:27:02,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315812553] [2022-09-20 21:27:02,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:27:02,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-09-20 21:27:02,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:27:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-09-20 21:27:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=6348, Unknown=14, NotChecked=0, Total=6642 [2022-09-20 21:27:02,492 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 212 [2022-09-20 21:27:02,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 1644 transitions, 11089 flow. Second operand has 82 states, 82 states have (on average 70.78048780487805) internal successors, (5804), 82 states have internal predecessors, (5804), 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) [2022-09-20 21:27:02,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:27:02,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 212 [2022-09-20 21:27:02,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand