/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:30:56,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:30:56,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:30:56,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:30:56,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:30:56,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:30:56,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:30:56,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:30:56,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:30:56,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:30:56,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:30:56,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:30:56,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:30:56,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:30:56,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:30:56,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:30:56,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:30:56,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:30:56,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:30:56,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:30:56,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:30:56,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:30:56,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:30:56,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:30:56,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:30:56,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:30:56,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:30:56,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:30:56,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:30:56,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:30:56,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:30:56,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:30:56,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:30:56,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:30:56,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:30:56,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:30:56,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:30:56,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:30:56,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:30:56,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:30:56,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:30:56,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:30:56,321 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:30:56,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:30:56,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:30:56,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:30:56,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:30:56,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:30:56,322 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:30:56,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:30:56,322 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:30:56,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:30:56,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:30:56,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:30:56,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:30:56,324 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:30:56,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:30:56,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:30:56,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:30:56,516 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:30:56,522 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:30:56,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-01-28 02:30:57,632 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:30:57,782 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:30:57,783 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-01-28 02:30:57,787 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3646c2936/12197c7e10bd49e49e5403a00e4992f7/FLAG7834d9a2f [2023-01-28 02:30:57,796 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3646c2936/12197c7e10bd49e49e5403a00e4992f7 [2023-01-28 02:30:57,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:30:57,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:30:57,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:30:57,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:30:57,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:30:57,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598ebd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57, skipping insertion in model container [2023-01-28 02:30:57,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:30:57,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:30:57,915 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c[2482,2495] [2023-01-28 02:30:57,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:30:57,927 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:30:57,940 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c[2482,2495] [2023-01-28 02:30:57,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:30:57,951 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:30:57,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57 WrapperNode [2023-01-28 02:30:57,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:30:57,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:30:57,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:30:57,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:30:57,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,978 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 202 [2023-01-28 02:30:57,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:30:57,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:30:57,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:30:57,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:30:57,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:57,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:30:57,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:30:57,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:30:58,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:30:58,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (1/1) ... [2023-01-28 02:30:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:30:58,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:30:58,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:30:58,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:30:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:30:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:30:58,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:30:58,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:30:58,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:30:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:30:58,051 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:30:58,115 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:30:58,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:30:58,379 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:30:58,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:30:58,387 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 02:30:58,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:30:58 BoogieIcfgContainer [2023-01-28 02:30:58,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:30:58,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:30:58,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:30:58,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:30:58,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:30:57" (1/3) ... [2023-01-28 02:30:58,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7307ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:30:58, skipping insertion in model container [2023-01-28 02:30:58,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:30:57" (2/3) ... [2023-01-28 02:30:58,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7307ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:30:58, skipping insertion in model container [2023-01-28 02:30:58,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:30:58" (3/3) ... [2023-01-28 02:30:58,409 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-01-28 02:30:58,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:30:58,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:30:58,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:30:58,523 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 02:30:58,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 478 flow [2023-01-28 02:30:58,642 INFO L130 PetriNetUnfolder]: 21/229 cut-off events. [2023-01-28 02:30:58,642 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:30:58,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 229 events. 21/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 150. Up to 3 conditions per place. [2023-01-28 02:30:58,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 478 flow [2023-01-28 02:30:58,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 221 transitions, 454 flow [2023-01-28 02:30:58,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:30:58,660 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 221 transitions, 454 flow [2023-01-28 02:30:58,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 221 transitions, 454 flow [2023-01-28 02:30:58,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 221 transitions, 454 flow [2023-01-28 02:30:58,689 INFO L130 PetriNetUnfolder]: 21/221 cut-off events. [2023-01-28 02:30:58,689 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:30:58,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 221 events. 21/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 150. Up to 3 conditions per place. [2023-01-28 02:30:58,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2023-01-28 02:31:03,971 INFO L134 LiptonReduction]: Checked pairs total: 5413 [2023-01-28 02:31:03,971 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-01-28 02:31:03,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:31:03,986 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;@42caca6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:31:03,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 02:31:03,992 INFO L130 PetriNetUnfolder]: 5/22 cut-off events. [2023-01-28 02:31:03,992 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:31:03,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:03,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:03,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:03,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash 40498280, now seen corresponding path program 1 times [2023-01-28 02:31:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:04,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688808682] [2023-01-28 02:31:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688808682] [2023-01-28 02:31:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688808682] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:31:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061408279] [2023-01-28 02:31:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:04,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:31:04,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:31:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:31:04,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:31:04,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:04,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:04,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:31:04,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:04,921 INFO L130 PetriNetUnfolder]: 177/320 cut-off events. [2023-01-28 02:31:04,922 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-01-28 02:31:04,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 320 events. 177/320 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1171 event pairs, 20 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 320. Up to 134 conditions per place. [2023-01-28 02:31:04,927 INFO L137 encePairwiseOnDemand]: 475/483 looper letters, 60 selfloop transitions, 10 changer transitions 4/74 dead transitions. [2023-01-28 02:31:04,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 74 transitions, 335 flow [2023-01-28 02:31:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:31:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:31:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1381 transitions. [2023-01-28 02:31:04,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3574016563146998 [2023-01-28 02:31:04,945 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1381 transitions. [2023-01-28 02:31:04,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1381 transitions. [2023-01-28 02:31:04,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:04,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1381 transitions. [2023-01-28 02:31:04,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.625) internal successors, (1381), 8 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:04,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:04,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:04,966 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 58 flow. Second operand 8 states and 1381 transitions. [2023-01-28 02:31:04,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 74 transitions, 335 flow [2023-01-28 02:31:04,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 74 transitions, 309 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:04,972 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 113 flow [2023-01-28 02:31:04,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=113, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-01-28 02:31:04,976 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-01-28 02:31:04,976 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 113 flow [2023-01-28 02:31:04,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:04,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:04,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:04,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:31:04,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:04,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1445248948, now seen corresponding path program 2 times [2023-01-28 02:31:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82532815] [2023-01-28 02:31:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:04,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:05,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82532815] [2023-01-28 02:31:05,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82532815] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:05,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:31:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085525889] [2023-01-28 02:31:05,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:05,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:31:05,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:31:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:31:05,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:31:05,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:05,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:05,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:31:05,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:05,399 INFO L130 PetriNetUnfolder]: 182/340 cut-off events. [2023-01-28 02:31:05,400 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-28 02:31:05,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 340 events. 182/340 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1316 event pairs, 22 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 527. Up to 134 conditions per place. [2023-01-28 02:31:05,402 INFO L137 encePairwiseOnDemand]: 476/483 looper letters, 54 selfloop transitions, 12 changer transitions 8/74 dead transitions. [2023-01-28 02:31:05,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 74 transitions, 365 flow [2023-01-28 02:31:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:31:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:31:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1378 transitions. [2023-01-28 02:31:05,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35662525879917184 [2023-01-28 02:31:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1378 transitions. [2023-01-28 02:31:05,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1378 transitions. [2023-01-28 02:31:05,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:05,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1378 transitions. [2023-01-28 02:31:05,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.25) internal successors, (1378), 8 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:05,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:05,417 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:05,417 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 113 flow. Second operand 8 states and 1378 transitions. [2023-01-28 02:31:05,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 74 transitions, 365 flow [2023-01-28 02:31:05,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 74 transitions, 363 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 02:31:05,422 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 161 flow [2023-01-28 02:31:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=161, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-01-28 02:31:05,423 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-01-28 02:31:05,423 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 161 flow [2023-01-28 02:31:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:05,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:31:05,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:05,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:05,427 INFO L85 PathProgramCache]: Analyzing trace with hash 168744916, now seen corresponding path program 1 times [2023-01-28 02:31:05,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:05,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014626354] [2023-01-28 02:31:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014626354] [2023-01-28 02:31:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014626354] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310961527] [2023-01-28 02:31:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:05,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:05,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:05,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:05,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:31:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:05,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 02:31:05,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:06,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:06,191 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 164 treesize of output 145 [2023-01-28 02:31:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:06,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:06,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:06,446 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 185 treesize of output 165 [2023-01-28 02:31:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310961527] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:06,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-28 02:31:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021684160] [2023-01-28 02:31:06,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 02:31:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 02:31:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-01-28 02:31:06,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:31:06,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 161 flow. Second operand has 20 states, 20 states have (on average 164.9) internal successors, (3298), 20 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:06,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:06,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:31:06,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:07,376 INFO L130 PetriNetUnfolder]: 497/913 cut-off events. [2023-01-28 02:31:07,377 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-01-28 02:31:07,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 913 events. 497/913 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4453 event pairs, 190 based on Foata normal form. 26/827 useless extension candidates. Maximal degree in co-relation 2101. Up to 333 conditions per place. [2023-01-28 02:31:07,380 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 115 selfloop transitions, 24 changer transitions 8/147 dead transitions. [2023-01-28 02:31:07,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 147 transitions, 805 flow [2023-01-28 02:31:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 02:31:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 02:31:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2743 transitions. [2023-01-28 02:31:07,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549430641821946 [2023-01-28 02:31:07,386 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2743 transitions. [2023-01-28 02:31:07,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2743 transitions. [2023-01-28 02:31:07,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:07,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2743 transitions. [2023-01-28 02:31:07,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.4375) internal successors, (2743), 16 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 483.0) internal successors, (8211), 17 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,402 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 483.0) internal successors, (8211), 17 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,402 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 161 flow. Second operand 16 states and 2743 transitions. [2023-01-28 02:31:07,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 147 transitions, 805 flow [2023-01-28 02:31:07,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 147 transitions, 788 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 02:31:07,406 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 333 flow [2023-01-28 02:31:07,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=333, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-01-28 02:31:07,407 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-01-28 02:31:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 333 flow [2023-01-28 02:31:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 164.9) internal successors, (3298), 20 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:07,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:07,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:31:07,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:07,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:07,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash 924557380, now seen corresponding path program 2 times [2023-01-28 02:31:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623128978] [2023-01-28 02:31:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623128978] [2023-01-28 02:31:07,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623128978] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553269456] [2023-01-28 02:31:07,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:31:07,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:07,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:07,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:07,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:31:07,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:31:07,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:07,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 02:31:07,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:07,962 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:07,962 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 126 treesize of output 107 [2023-01-28 02:31:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:08,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:08,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553269456] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:08,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:08,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-01-28 02:31:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881766147] [2023-01-28 02:31:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:08,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:31:08,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:08,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:31:08,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:31:08,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:31:08,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:08,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:31:08,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:08,212 INFO L130 PetriNetUnfolder]: 559/1071 cut-off events. [2023-01-28 02:31:08,212 INFO L131 PetriNetUnfolder]: For 1615/1615 co-relation queries the response was YES. [2023-01-28 02:31:08,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1071 events. 559/1071 cut-off events. For 1615/1615 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5746 event pairs, 88 based on Foata normal form. 38/975 useless extension candidates. Maximal degree in co-relation 2599. Up to 457 conditions per place. [2023-01-28 02:31:08,216 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 72 selfloop transitions, 30 changer transitions 6/108 dead transitions. [2023-01-28 02:31:08,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 108 transitions, 741 flow [2023-01-28 02:31:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:31:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:31:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1379 transitions. [2023-01-28 02:31:08,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35688405797101447 [2023-01-28 02:31:08,219 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1379 transitions. [2023-01-28 02:31:08,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1379 transitions. [2023-01-28 02:31:08,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:08,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1379 transitions. [2023-01-28 02:31:08,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,225 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,225 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 333 flow. Second operand 8 states and 1379 transitions. [2023-01-28 02:31:08,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 108 transitions, 741 flow [2023-01-28 02:31:08,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 108 transitions, 698 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:08,232 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 497 flow [2023-01-28 02:31:08,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-01-28 02:31:08,233 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 44 predicate places. [2023-01-28 02:31:08,233 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 497 flow [2023-01-28 02:31:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:08,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:08,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:08,440 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 [2023-01-28 02:31:08,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:08,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1125552358, now seen corresponding path program 1 times [2023-01-28 02:31:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:08,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808010216] [2023-01-28 02:31:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:08,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808010216] [2023-01-28 02:31:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808010216] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346586204] [2023-01-28 02:31:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:08,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:08,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:08,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:31:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:08,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:31:08,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:08,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346586204] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:08,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:08,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-28 02:31:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838543618] [2023-01-28 02:31:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:08,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:31:08,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:31:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:31:08,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 483 [2023-01-28 02:31:08,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 497 flow. Second operand has 7 states, 7 states have (on average 172.42857142857142) internal successors, (1207), 7 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:08,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 483 [2023-01-28 02:31:08,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:08,962 INFO L130 PetriNetUnfolder]: 599/1159 cut-off events. [2023-01-28 02:31:08,962 INFO L131 PetriNetUnfolder]: For 2711/2711 co-relation queries the response was YES. [2023-01-28 02:31:08,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 1159 events. 599/1159 cut-off events. For 2711/2711 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6308 event pairs, 194 based on Foata normal form. 0/1027 useless extension candidates. Maximal degree in co-relation 3090. Up to 234 conditions per place. [2023-01-28 02:31:08,967 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 102 selfloop transitions, 17 changer transitions 8/127 dead transitions. [2023-01-28 02:31:08,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 127 transitions, 980 flow [2023-01-28 02:31:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:31:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:31:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1791 transitions. [2023-01-28 02:31:08,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37080745341614907 [2023-01-28 02:31:08,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1791 transitions. [2023-01-28 02:31:08,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1791 transitions. [2023-01-28 02:31:08,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:08,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1791 transitions. [2023-01-28 02:31:08,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 179.1) internal successors, (1791), 10 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,978 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,978 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 497 flow. Second operand 10 states and 1791 transitions. [2023-01-28 02:31:08,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 127 transitions, 980 flow [2023-01-28 02:31:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 127 transitions, 969 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:08,986 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 550 flow [2023-01-28 02:31:08,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=550, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-01-28 02:31:08,987 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 54 predicate places. [2023-01-28 02:31:08,987 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 550 flow [2023-01-28 02:31:08,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 172.42857142857142) internal successors, (1207), 7 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:08,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:08,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:09,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:09,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:09,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:09,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1919531260, now seen corresponding path program 1 times [2023-01-28 02:31:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:09,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619260075] [2023-01-28 02:31:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619260075] [2023-01-28 02:31:09,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619260075] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:09,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:09,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:31:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34024962] [2023-01-28 02:31:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:09,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:31:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:31:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:31:09,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 483 [2023-01-28 02:31:09,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 550 flow. Second operand has 5 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:09,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 483 [2023-01-28 02:31:09,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:09,366 INFO L130 PetriNetUnfolder]: 463/919 cut-off events. [2023-01-28 02:31:09,367 INFO L131 PetriNetUnfolder]: For 2411/2411 co-relation queries the response was YES. [2023-01-28 02:31:09,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3081 conditions, 919 events. 463/919 cut-off events. For 2411/2411 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4733 event pairs, 314 based on Foata normal form. 24/942 useless extension candidates. Maximal degree in co-relation 2854. Up to 766 conditions per place. [2023-01-28 02:31:09,371 INFO L137 encePairwiseOnDemand]: 478/483 looper letters, 52 selfloop transitions, 2 changer transitions 26/80 dead transitions. [2023-01-28 02:31:09,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 685 flow [2023-01-28 02:31:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:31:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:31:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 909 transitions. [2023-01-28 02:31:09,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763975155279503 [2023-01-28 02:31:09,373 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 909 transitions. [2023-01-28 02:31:09,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 909 transitions. [2023-01-28 02:31:09,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:09,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 909 transitions. [2023-01-28 02:31:09,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.8) internal successors, (909), 5 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 483.0) internal successors, (2898), 6 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 483.0) internal successors, (2898), 6 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,377 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 550 flow. Second operand 5 states and 909 transitions. [2023-01-28 02:31:09,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 685 flow [2023-01-28 02:31:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 635 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-01-28 02:31:09,388 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 343 flow [2023-01-28 02:31:09,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-01-28 02:31:09,389 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 49 predicate places. [2023-01-28 02:31:09,389 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 343 flow [2023-01-28 02:31:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:09,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:09,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:31:09,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:09,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash -106514784, now seen corresponding path program 1 times [2023-01-28 02:31:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937060852] [2023-01-28 02:31:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937060852] [2023-01-28 02:31:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937060852] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:31:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220382970] [2023-01-28 02:31:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:31:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:31:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:31:09,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 483 [2023-01-28 02:31:09,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:09,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 483 [2023-01-28 02:31:09,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:09,543 INFO L130 PetriNetUnfolder]: 266/526 cut-off events. [2023-01-28 02:31:09,543 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2023-01-28 02:31:09,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 526 events. 266/526 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2212 event pairs, 158 based on Foata normal form. 24/549 useless extension candidates. Maximal degree in co-relation 1793. Up to 375 conditions per place. [2023-01-28 02:31:09,545 INFO L137 encePairwiseOnDemand]: 478/483 looper letters, 32 selfloop transitions, 4 changer transitions 22/58 dead transitions. [2023-01-28 02:31:09,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 430 flow [2023-01-28 02:31:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:31:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:31:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2023-01-28 02:31:09,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755693581780538 [2023-01-28 02:31:09,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2023-01-28 02:31:09,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2023-01-28 02:31:09,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:09,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2023-01-28 02:31:09,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 483.0) internal successors, (2898), 6 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 483.0) internal successors, (2898), 6 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,551 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 343 flow. Second operand 5 states and 907 transitions. [2023-01-28 02:31:09,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 430 flow [2023-01-28 02:31:09,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 392 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:09,556 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 176 flow [2023-01-28 02:31:09,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2023-01-28 02:31:09,556 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 35 predicate places. [2023-01-28 02:31:09,557 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 176 flow [2023-01-28 02:31:09,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:09,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:09,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:09,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:31:09,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:09,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1869828197, now seen corresponding path program 1 times [2023-01-28 02:31:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127105642] [2023-01-28 02:31:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:10,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127105642] [2023-01-28 02:31:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127105642] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:10,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303635814] [2023-01-28 02:31:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:10,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:10,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:10,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:31:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:10,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 02:31:10,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:10,279 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:10,323 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:10,394 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:10,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:13,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:13,733 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 1 case distinctions, treesize of input 48 treesize of output 37 [2023-01-28 02:31:13,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:13,745 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 598 treesize of output 546 [2023-01-28 02:31:13,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:13,773 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 255 [2023-01-28 02:31:13,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:13,784 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 223 [2023-01-28 02:31:13,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:13,971 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 1 case distinctions, treesize of input 48 treesize of output 37 [2023-01-28 02:31:13,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:13,982 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 1206 treesize of output 1090 [2023-01-28 02:31:14,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:14,011 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 255 [2023-01-28 02:31:14,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:14,022 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 223 [2023-01-28 02:31:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303635814] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:14,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:14,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2023-01-28 02:31:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862286910] [2023-01-28 02:31:14,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:14,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:31:14,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:31:14,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=526, Unknown=36, NotChecked=0, Total=702 [2023-01-28 02:31:14,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 483 [2023-01-28 02:31:14,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 36 transitions, 176 flow. Second operand has 27 states, 27 states have (on average 138.55555555555554) internal successors, (3741), 27 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:14,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:14,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 483 [2023-01-28 02:31:14,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:15,170 INFO L130 PetriNetUnfolder]: 588/1042 cut-off events. [2023-01-28 02:31:15,170 INFO L131 PetriNetUnfolder]: For 3058/3058 co-relation queries the response was YES. [2023-01-28 02:31:15,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3664 conditions, 1042 events. 588/1042 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4968 event pairs, 76 based on Foata normal form. 32/1072 useless extension candidates. Maximal degree in co-relation 3626. Up to 313 conditions per place. [2023-01-28 02:31:15,177 INFO L137 encePairwiseOnDemand]: 469/483 looper letters, 77 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2023-01-28 02:31:15,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 672 flow [2023-01-28 02:31:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1869 transitions. [2023-01-28 02:31:15,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2976588628762542 [2023-01-28 02:31:15,181 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1869 transitions. [2023-01-28 02:31:15,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1869 transitions. [2023-01-28 02:31:15,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:15,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1869 transitions. [2023-01-28 02:31:15,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.76923076923077) internal successors, (1869), 13 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:15,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:15,192 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:15,192 INFO L175 Difference]: Start difference. First operand has 60 places, 36 transitions, 176 flow. Second operand 13 states and 1869 transitions. [2023-01-28 02:31:15,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 672 flow [2023-01-28 02:31:15,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 100 transitions, 554 flow, removed 55 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:15,201 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 281 flow [2023-01-28 02:31:15,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=281, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-01-28 02:31:15,202 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 33 predicate places. [2023-01-28 02:31:15,202 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 281 flow [2023-01-28 02:31:15,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 138.55555555555554) internal successors, (3741), 27 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:15,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:15,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:15,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:15,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:15,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:15,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1008614899, now seen corresponding path program 2 times [2023-01-28 02:31:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428688507] [2023-01-28 02:31:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:15,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428688507] [2023-01-28 02:31:15,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428688507] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:15,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796549924] [2023-01-28 02:31:15,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:31:15,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:15,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:15,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:15,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:31:15,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:31:15,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:15,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:31:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:16,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:16,183 INFO L321 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2023-01-28 02:31:16,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 90 treesize of output 91 [2023-01-28 02:31:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796549924] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:16,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 23 [2023-01-28 02:31:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405097554] [2023-01-28 02:31:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:16,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:31:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:31:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-01-28 02:31:16,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 483 [2023-01-28 02:31:16,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 281 flow. Second operand has 10 states, 10 states have (on average 150.9) internal successors, (1509), 10 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:16,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:16,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 483 [2023-01-28 02:31:16,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:16,752 INFO L130 PetriNetUnfolder]: 702/1236 cut-off events. [2023-01-28 02:31:16,752 INFO L131 PetriNetUnfolder]: For 2149/2149 co-relation queries the response was YES. [2023-01-28 02:31:16,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4479 conditions, 1236 events. 702/1236 cut-off events. For 2149/2149 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6064 event pairs, 198 based on Foata normal form. 4/1240 useless extension candidates. Maximal degree in co-relation 4439. Up to 652 conditions per place. [2023-01-28 02:31:16,758 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 72 selfloop transitions, 39 changer transitions 0/111 dead transitions. [2023-01-28 02:31:16,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 833 flow [2023-01-28 02:31:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2019 transitions. [2023-01-28 02:31:16,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3215480172001911 [2023-01-28 02:31:16,762 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2019 transitions. [2023-01-28 02:31:16,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2019 transitions. [2023-01-28 02:31:16,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:16,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2019 transitions. [2023-01-28 02:31:16,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.30769230769232) internal successors, (2019), 13 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:16,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:16,770 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:16,770 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 281 flow. Second operand 13 states and 2019 transitions. [2023-01-28 02:31:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 833 flow [2023-01-28 02:31:16,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 111 transitions, 799 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-28 02:31:16,776 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 556 flow [2023-01-28 02:31:16,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=556, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-01-28 02:31:16,777 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 46 predicate places. [2023-01-28 02:31:16,777 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 556 flow [2023-01-28 02:31:16,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.9) internal successors, (1509), 10 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:16,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:16,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:16,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 02:31:16,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:16,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:16,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:16,985 INFO L85 PathProgramCache]: Analyzing trace with hash -571449319, now seen corresponding path program 3 times [2023-01-28 02:31:16,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:16,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220763797] [2023-01-28 02:31:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:16,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220763797] [2023-01-28 02:31:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220763797] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092984113] [2023-01-28 02:31:17,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:31:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:17,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:17,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 02:31:17,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:31:17,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:17,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:31:17,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:17,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:17,927 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 02:31:17,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 58 treesize of output 58 [2023-01-28 02:31:17,958 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:17,959 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 12 treesize of output 4 [2023-01-28 02:31:17,963 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:17,963 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 12 treesize of output 4 [2023-01-28 02:31:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092984113] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:18,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:18,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2023-01-28 02:31:18,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161747851] [2023-01-28 02:31:18,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:18,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 02:31:18,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 02:31:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:31:18,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:31:18,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 556 flow. Second operand has 22 states, 22 states have (on average 146.72727272727272) internal successors, (3228), 22 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:18,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:31:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:18,804 INFO L130 PetriNetUnfolder]: 790/1412 cut-off events. [2023-01-28 02:31:18,805 INFO L131 PetriNetUnfolder]: For 5103/5103 co-relation queries the response was YES. [2023-01-28 02:31:18,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6307 conditions, 1412 events. 790/1412 cut-off events. For 5103/5103 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7256 event pairs, 272 based on Foata normal form. 32/1444 useless extension candidates. Maximal degree in co-relation 6260. Up to 759 conditions per place. [2023-01-28 02:31:18,812 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 84 selfloop transitions, 33 changer transitions 0/117 dead transitions. [2023-01-28 02:31:18,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 1096 flow [2023-01-28 02:31:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:31:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:31:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1663 transitions. [2023-01-28 02:31:18,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3130058347449652 [2023-01-28 02:31:18,815 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1663 transitions. [2023-01-28 02:31:18,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1663 transitions. [2023-01-28 02:31:18,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:18,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1663 transitions. [2023-01-28 02:31:18,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.1818181818182) internal successors, (1663), 11 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,822 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,822 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 556 flow. Second operand 11 states and 1663 transitions. [2023-01-28 02:31:18,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 1096 flow [2023-01-28 02:31:18,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 117 transitions, 1006 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:18,834 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 688 flow [2023-01-28 02:31:18,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2023-01-28 02:31:18,835 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2023-01-28 02:31:18,835 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 688 flow [2023-01-28 02:31:18,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 146.72727272727272) internal successors, (3228), 22 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:18,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:18,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 02:31:19,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:19,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:19,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash -20464861, now seen corresponding path program 4 times [2023-01-28 02:31:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483932484] [2023-01-28 02:31:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:19,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483932484] [2023-01-28 02:31:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483932484] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:19,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539458103] [2023-01-28 02:31:19,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:31:19,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:19,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:19,441 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:19,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 02:31:19,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:31:19,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:19,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 02:31:19,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:19,561 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:19,589 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:19,612 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:19,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:31:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539458103] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:19,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 22 [2023-01-28 02:31:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304513083] [2023-01-28 02:31:19,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 02:31:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 02:31:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:31:19,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 483 [2023-01-28 02:31:19,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 688 flow. Second operand has 22 states, 22 states have (on average 139.04545454545453) internal successors, (3059), 22 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:19,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:19,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 483 [2023-01-28 02:31:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:20,930 INFO L130 PetriNetUnfolder]: 948/1710 cut-off events. [2023-01-28 02:31:20,930 INFO L131 PetriNetUnfolder]: For 7364/7364 co-relation queries the response was YES. [2023-01-28 02:31:20,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7957 conditions, 1710 events. 948/1710 cut-off events. For 7364/7364 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9299 event pairs, 230 based on Foata normal form. 32/1742 useless extension candidates. Maximal degree in co-relation 7906. Up to 894 conditions per place. [2023-01-28 02:31:20,942 INFO L137 encePairwiseOnDemand]: 469/483 looper letters, 86 selfloop transitions, 61 changer transitions 0/147 dead transitions. [2023-01-28 02:31:20,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 147 transitions, 1409 flow [2023-01-28 02:31:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1870 transitions. [2023-01-28 02:31:20,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29781812390508045 [2023-01-28 02:31:20,946 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1870 transitions. [2023-01-28 02:31:20,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1870 transitions. [2023-01-28 02:31:20,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:20,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1870 transitions. [2023-01-28 02:31:20,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.84615384615384) internal successors, (1870), 13 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,955 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,955 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 688 flow. Second operand 13 states and 1870 transitions. [2023-01-28 02:31:20,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 147 transitions, 1409 flow [2023-01-28 02:31:20,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 147 transitions, 1329 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-01-28 02:31:20,975 INFO L231 Difference]: Finished difference. Result has 90 places, 108 transitions, 1106 flow [2023-01-28 02:31:20,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1106, PETRI_PLACES=90, PETRI_TRANSITIONS=108} [2023-01-28 02:31:20,976 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-01-28 02:31:20,976 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 108 transitions, 1106 flow [2023-01-28 02:31:20,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 139.04545454545453) internal successors, (3059), 22 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:20,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:21,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:21,181 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:21,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1451051645, now seen corresponding path program 5 times [2023-01-28 02:31:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:21,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110541646] [2023-01-28 02:31:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:21,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:21,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110541646] [2023-01-28 02:31:21,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110541646] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899641001] [2023-01-28 02:31:21,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:31:21,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:21,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:21,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:21,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 02:31:21,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:31:21,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:21,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 02:31:21,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:31:21,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:31:21,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899641001] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:21,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:31:21,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-28 02:31:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96441453] [2023-01-28 02:31:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:21,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:31:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:31:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-01-28 02:31:21,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 483 [2023-01-28 02:31:21,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 108 transitions, 1106 flow. Second operand has 6 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:21,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 483 [2023-01-28 02:31:21,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:22,122 INFO L130 PetriNetUnfolder]: 932/1654 cut-off events. [2023-01-28 02:31:22,122 INFO L131 PetriNetUnfolder]: For 9795/9795 co-relation queries the response was YES. [2023-01-28 02:31:22,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 1654 events. 932/1654 cut-off events. For 9795/9795 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8865 event pairs, 310 based on Foata normal form. 4/1658 useless extension candidates. Maximal degree in co-relation 8693. Up to 1017 conditions per place. [2023-01-28 02:31:22,131 INFO L137 encePairwiseOnDemand]: 475/483 looper letters, 100 selfloop transitions, 30 changer transitions 0/130 dead transitions. [2023-01-28 02:31:22,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 1487 flow [2023-01-28 02:31:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:31:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:31:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1071 transitions. [2023-01-28 02:31:22,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2023-01-28 02:31:22,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1071 transitions. [2023-01-28 02:31:22,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1071 transitions. [2023-01-28 02:31:22,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:22,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1071 transitions. [2023-01-28 02:31:22,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 483.0) internal successors, (3381), 7 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,137 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 483.0) internal successors, (3381), 7 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,138 INFO L175 Difference]: Start difference. First operand has 90 places, 108 transitions, 1106 flow. Second operand 6 states and 1071 transitions. [2023-01-28 02:31:22,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 1487 flow [2023-01-28 02:31:22,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 130 transitions, 1441 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:22,161 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 1130 flow [2023-01-28 02:31:22,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1130, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2023-01-28 02:31:22,162 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 67 predicate places. [2023-01-28 02:31:22,162 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 1130 flow [2023-01-28 02:31:22,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:22,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:22,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 02:31:22,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 02:31:22,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:22,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash -900067187, now seen corresponding path program 6 times [2023-01-28 02:31:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:22,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297905110] [2023-01-28 02:31:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:22,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297905110] [2023-01-28 02:31:22,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297905110] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424453097] [2023-01-28 02:31:22,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:31:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:22,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:22,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 02:31:22,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 02:31:22,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:22,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:31:22,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:23,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:23,179 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:23,179 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 20 treesize of output 4 [2023-01-28 02:31:23,214 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:31:23,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 82 treesize of output 66 [2023-01-28 02:31:23,234 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:23,234 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 20 treesize of output 4 [2023-01-28 02:31:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424453097] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:23,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 22 [2023-01-28 02:31:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278564646] [2023-01-28 02:31:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:23,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:31:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:31:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-01-28 02:31:23,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 483 [2023-01-28 02:31:23,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 1130 flow. Second operand has 10 states, 10 states have (on average 150.9) internal successors, (1509), 10 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:23,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 483 [2023-01-28 02:31:23,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:23,912 INFO L130 PetriNetUnfolder]: 916/1598 cut-off events. [2023-01-28 02:31:23,912 INFO L131 PetriNetUnfolder]: For 9260/9260 co-relation queries the response was YES. [2023-01-28 02:31:23,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 1598 events. 916/1598 cut-off events. For 9260/9260 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8387 event pairs, 216 based on Foata normal form. 4/1602 useless extension candidates. Maximal degree in co-relation 8530. Up to 812 conditions per place. [2023-01-28 02:31:23,921 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 80 selfloop transitions, 62 changer transitions 0/142 dead transitions. [2023-01-28 02:31:23,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 142 transitions, 1599 flow [2023-01-28 02:31:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:31:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:31:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2018 transitions. [2023-01-28 02:31:23,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32138875617136486 [2023-01-28 02:31:23,925 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2018 transitions. [2023-01-28 02:31:23,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2018 transitions. [2023-01-28 02:31:23,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:23,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2018 transitions. [2023-01-28 02:31:23,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.23076923076923) internal successors, (2018), 13 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,932 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,932 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 1130 flow. Second operand 13 states and 2018 transitions. [2023-01-28 02:31:23,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 142 transitions, 1599 flow [2023-01-28 02:31:23,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 142 transitions, 1541 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:23,959 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 1198 flow [2023-01-28 02:31:23,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1198, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2023-01-28 02:31:23,959 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 76 predicate places. [2023-01-28 02:31:23,959 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 1198 flow [2023-01-28 02:31:23,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.9) internal successors, (1509), 10 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:23,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:23,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 02:31:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 02:31:24,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:24,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -525642385, now seen corresponding path program 7 times [2023-01-28 02:31:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539890095] [2023-01-28 02:31:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:24,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:24,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539890095] [2023-01-28 02:31:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539890095] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:24,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017903563] [2023-01-28 02:31:24,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:31:24,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:24,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:24,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 02:31:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:24,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 02:31:24,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:24,743 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:24,801 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:24,833 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:25,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:25,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,364 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 1 case distinctions, treesize of input 48 treesize of output 37 [2023-01-28 02:31:25,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,373 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 598 treesize of output 546 [2023-01-28 02:31:25,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,395 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 255 [2023-01-28 02:31:25,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,405 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 223 [2023-01-28 02:31:25,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,607 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 1 case distinctions, treesize of input 48 treesize of output 37 [2023-01-28 02:31:25,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,616 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 1206 treesize of output 1090 [2023-01-28 02:31:25,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,642 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 239 [2023-01-28 02:31:25,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:25,652 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 223 [2023-01-28 02:31:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:25,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017903563] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:25,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:25,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2023-01-28 02:31:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184879215] [2023-01-28 02:31:25,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:25,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 02:31:25,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 02:31:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=684, Unknown=10, NotChecked=0, Total=812 [2023-01-28 02:31:25,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 483 [2023-01-28 02:31:25,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 1198 flow. Second operand has 29 states, 29 states have (on average 138.51724137931035) internal successors, (4017), 29 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:25,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 483 [2023-01-28 02:31:25,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:26,691 INFO L130 PetriNetUnfolder]: 1202/2132 cut-off events. [2023-01-28 02:31:26,692 INFO L131 PetriNetUnfolder]: For 13561/13561 co-relation queries the response was YES. [2023-01-28 02:31:26,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11780 conditions, 2132 events. 1202/2132 cut-off events. For 13561/13561 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12156 event pairs, 228 based on Foata normal form. 4/2136 useless extension candidates. Maximal degree in co-relation 11720. Up to 927 conditions per place. [2023-01-28 02:31:26,717 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 79 selfloop transitions, 103 changer transitions 0/182 dead transitions. [2023-01-28 02:31:26,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 182 transitions, 2240 flow [2023-01-28 02:31:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:31:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:31:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1988 transitions. [2023-01-28 02:31:26,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2939958592132505 [2023-01-28 02:31:26,725 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1988 transitions. [2023-01-28 02:31:26,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1988 transitions. [2023-01-28 02:31:26,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:26,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1988 transitions. [2023-01-28 02:31:26,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 142.0) internal successors, (1988), 14 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 483.0) internal successors, (7245), 15 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,739 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 483.0) internal successors, (7245), 15 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,739 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 1198 flow. Second operand 14 states and 1988 transitions. [2023-01-28 02:31:26,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 182 transitions, 2240 flow [2023-01-28 02:31:26,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 182 transitions, 2115 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:26,781 INFO L231 Difference]: Finished difference. Result has 110 places, 144 transitions, 1863 flow [2023-01-28 02:31:26,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1863, PETRI_PLACES=110, PETRI_TRANSITIONS=144} [2023-01-28 02:31:26,782 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 85 predicate places. [2023-01-28 02:31:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 144 transitions, 1863 flow [2023-01-28 02:31:26,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 138.51724137931035) internal successors, (4017), 29 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:26,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:26,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 02:31:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 02:31:26,989 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:26,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1427234071, now seen corresponding path program 8 times [2023-01-28 02:31:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135257803] [2023-01-28 02:31:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:27,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:27,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135257803] [2023-01-28 02:31:27,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135257803] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:27,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524595544] [2023-01-28 02:31:27,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:31:27,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:27,339 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:27,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 02:31:27,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:31:27,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:27,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:31:27,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:27,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:27,777 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:27,778 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 20 treesize of output 4 [2023-01-28 02:31:27,814 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:31:27,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 82 treesize of output 66 [2023-01-28 02:31:27,832 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:27,836 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 20 treesize of output 4 [2023-01-28 02:31:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:27,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524595544] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:27,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:27,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2023-01-28 02:31:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422808863] [2023-01-28 02:31:27,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:27,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 02:31:27,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 02:31:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:31:27,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:31:27,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 144 transitions, 1863 flow. Second operand has 22 states, 22 states have (on average 146.8181818181818) internal successors, (3230), 22 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:27,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:27,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:31:27,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:28,673 INFO L130 PetriNetUnfolder]: 1170/2100 cut-off events. [2023-01-28 02:31:28,673 INFO L131 PetriNetUnfolder]: For 17969/17969 co-relation queries the response was YES. [2023-01-28 02:31:28,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 2100 events. 1170/2100 cut-off events. For 17969/17969 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11860 event pairs, 292 based on Foata normal form. 32/2132 useless extension candidates. Maximal degree in co-relation 12973. Up to 1203 conditions per place. [2023-01-28 02:31:28,688 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 128 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2023-01-28 02:31:28,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 183 transitions, 2513 flow [2023-01-28 02:31:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:31:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:31:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1662 transitions. [2023-01-28 02:31:28,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31281761716544326 [2023-01-28 02:31:28,690 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1662 transitions. [2023-01-28 02:31:28,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1662 transitions. [2023-01-28 02:31:28,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:28,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1662 transitions. [2023-01-28 02:31:28,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.0909090909091) internal successors, (1662), 11 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,695 INFO L175 Difference]: Start difference. First operand has 110 places, 144 transitions, 1863 flow. Second operand 11 states and 1662 transitions. [2023-01-28 02:31:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 183 transitions, 2513 flow [2023-01-28 02:31:28,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 183 transitions, 2392 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-01-28 02:31:28,762 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 2021 flow [2023-01-28 02:31:28,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2021, PETRI_PLACES=118, PETRI_TRANSITIONS=150} [2023-01-28 02:31:28,762 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 93 predicate places. [2023-01-28 02:31:28,762 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 2021 flow [2023-01-28 02:31:28,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 146.8181818181818) internal successors, (3230), 22 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:28,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:28,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:28,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 02:31:28,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:28,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -134892999, now seen corresponding path program 9 times [2023-01-28 02:31:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126778833] [2023-01-28 02:31:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126778833] [2023-01-28 02:31:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126778833] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699448160] [2023-01-28 02:31:29,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:31:29,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:29,466 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:29,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 02:31:29,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:31:29,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:29,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 02:31:29,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:29,725 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:29,766 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:29,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:29,921 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:31:29,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-01-28 02:31:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:29,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:30,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,621 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 1 case distinctions, treesize of input 42 treesize of output 31 [2023-01-28 02:31:30,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,629 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 70 treesize of output 66 [2023-01-28 02:31:30,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,637 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 55 [2023-01-28 02:31:30,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,669 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 1 case distinctions, treesize of input 42 treesize of output 31 [2023-01-28 02:31:30,676 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,677 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 70 treesize of output 66 [2023-01-28 02:31:30,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,685 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 55 [2023-01-28 02:31:30,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,707 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 1 case distinctions, treesize of input 188 treesize of output 104 [2023-01-28 02:31:30,719 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:30,720 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 3750 treesize of output 3350 [2023-01-28 02:31:30,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,792 INFO L350 Elim1Store]: Elim1 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 854 treesize of output 806 [2023-01-28 02:31:30,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,812 INFO L350 Elim1Store]: Elim1 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 752 treesize of output 664 [2023-01-28 02:31:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:31,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699448160] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:31,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2023-01-28 02:31:31,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944461323] [2023-01-28 02:31:31,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 02:31:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 02:31:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=787, Unknown=21, NotChecked=0, Total=930 [2023-01-28 02:31:31,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 483 [2023-01-28 02:31:31,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 2021 flow. Second operand has 31 states, 31 states have (on average 138.6451612903226) internal successors, (4298), 31 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:31,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:31,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 483 [2023-01-28 02:31:31,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:32,588 INFO L130 PetriNetUnfolder]: 1202/2156 cut-off events. [2023-01-28 02:31:32,588 INFO L131 PetriNetUnfolder]: For 20029/20029 co-relation queries the response was YES. [2023-01-28 02:31:32,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13749 conditions, 2156 events. 1202/2156 cut-off events. For 20029/20029 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12246 event pairs, 190 based on Foata normal form. 40/2196 useless extension candidates. Maximal degree in co-relation 13680. Up to 1132 conditions per place. [2023-01-28 02:31:32,611 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 135 selfloop transitions, 57 changer transitions 0/192 dead transitions. [2023-01-28 02:31:32,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 192 transitions, 2825 flow [2023-01-28 02:31:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:31:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:31:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1570 transitions. [2023-01-28 02:31:32,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2955015998494259 [2023-01-28 02:31:32,614 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1570 transitions. [2023-01-28 02:31:32,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1570 transitions. [2023-01-28 02:31:32,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:32,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1570 transitions. [2023-01-28 02:31:32,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.72727272727272) internal successors, (1570), 11 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,618 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,618 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 2021 flow. Second operand 11 states and 1570 transitions. [2023-01-28 02:31:32,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 192 transitions, 2825 flow [2023-01-28 02:31:32,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 192 transitions, 2736 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-01-28 02:31:32,681 INFO L231 Difference]: Finished difference. Result has 124 places, 153 transitions, 2146 flow [2023-01-28 02:31:32,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2146, PETRI_PLACES=124, PETRI_TRANSITIONS=153} [2023-01-28 02:31:32,681 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 99 predicate places. [2023-01-28 02:31:32,681 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 153 transitions, 2146 flow [2023-01-28 02:31:32,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 138.6451612903226) internal successors, (4298), 31 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:32,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:32,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:32,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:32,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 02:31:32,887 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:32,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash -71803201, now seen corresponding path program 10 times [2023-01-28 02:31:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812783444] [2023-01-28 02:31:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812783444] [2023-01-28 02:31:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812783444] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753364472] [2023-01-28 02:31:33,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:31:33,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:33,354 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:33,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 02:31:33,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:31:33,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:33,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 02:31:33,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:33,522 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:33,557 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:33,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:33,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 02:31:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:33,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:34,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:34,201 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 1 case distinctions, treesize of input 191 treesize of output 107 [2023-01-28 02:31:34,211 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:31:34,212 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 2126 treesize of output 1886 [2023-01-28 02:31:34,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:34,245 INFO L350 Elim1Store]: Elim1 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 922 treesize of output 826 [2023-01-28 02:31:34,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:34,261 INFO L350 Elim1Store]: Elim1 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 818 treesize of output 766 [2023-01-28 02:31:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753364472] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:36,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:36,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-01-28 02:31:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865113533] [2023-01-28 02:31:36,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:36,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 02:31:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 02:31:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=661, Unknown=17, NotChecked=0, Total=812 [2023-01-28 02:31:36,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 483 [2023-01-28 02:31:36,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 153 transitions, 2146 flow. Second operand has 29 states, 29 states have (on average 138.6206896551724) internal successors, (4020), 29 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:36,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:36,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 483 [2023-01-28 02:31:36,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:39,083 INFO L130 PetriNetUnfolder]: 2136/3876 cut-off events. [2023-01-28 02:31:39,084 INFO L131 PetriNetUnfolder]: For 36806/36806 co-relation queries the response was YES. [2023-01-28 02:31:39,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23507 conditions, 3876 events. 2136/3876 cut-off events. For 36806/36806 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24984 event pairs, 432 based on Foata normal form. 24/3900 useless extension candidates. Maximal degree in co-relation 23436. Up to 1152 conditions per place. [2023-01-28 02:31:39,111 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 183 selfloop transitions, 122 changer transitions 0/305 dead transitions. [2023-01-28 02:31:39,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 305 transitions, 4306 flow [2023-01-28 02:31:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:31:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:31:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2739 transitions. [2023-01-28 02:31:39,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2984635501797973 [2023-01-28 02:31:39,114 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2739 transitions. [2023-01-28 02:31:39,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2739 transitions. [2023-01-28 02:31:39,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:39,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2739 transitions. [2023-01-28 02:31:39,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 144.1578947368421) internal successors, (2739), 19 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 483.0) internal successors, (9660), 20 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,121 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 483.0) internal successors, (9660), 20 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,122 INFO L175 Difference]: Start difference. First operand has 124 places, 153 transitions, 2146 flow. Second operand 19 states and 2739 transitions. [2023-01-28 02:31:39,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 305 transitions, 4306 flow [2023-01-28 02:31:39,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 305 transitions, 4137 flow, removed 47 selfloop flow, removed 8 redundant places. [2023-01-28 02:31:39,259 INFO L231 Difference]: Finished difference. Result has 141 places, 190 transitions, 2848 flow [2023-01-28 02:31:39,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2848, PETRI_PLACES=141, PETRI_TRANSITIONS=190} [2023-01-28 02:31:39,260 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 116 predicate places. [2023-01-28 02:31:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 190 transitions, 2848 flow [2023-01-28 02:31:39,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 138.6206896551724) internal successors, (4020), 29 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:39,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 02:31:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 02:31:39,465 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:39,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1227810281, now seen corresponding path program 11 times [2023-01-28 02:31:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:39,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415896857] [2023-01-28 02:31:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:39,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415896857] [2023-01-28 02:31:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415896857] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340218896] [2023-01-28 02:31:39,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:31:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:39,978 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:39,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 02:31:40,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:31:40,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:40,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 02:31:40,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:31:40,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 02:31:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:31:40,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:40,490 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) (let ((.cse5 (forall ((~a2~0.offset Int) (v_ArrVal_607 (Array Int Int)) (~a2~0.base Int)) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_607) ~a2~0.base) (+ ~a2~0.offset .cse3)) |c_thread1Thread1of1ForFork0_#t~mem1#1|))))) (and (forall ((~a2~0.offset Int) (v_ArrVal_607 (Array Int Int)) (~a2~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_607))) (let ((.cse2 (select .cse4 ~a2~0.base))) (let ((.cse1 (select .cse2 ~a2~0.offset)) (.cse0 (select (select .cse4 c_~a1~0.base) c_~a1~0.offset))) (or (< (+ 2147483647 .cse0) .cse1) (= .cse0 .cse1) (not (= (select .cse2 (+ ~a2~0.offset .cse3)) |c_thread1Thread1of1ForFork0_#t~mem1#1|)) (< (+ .cse1 2147483648) .cse0)))))) (or (< 0 c_~n1~0) .cse5) (or (< 0 c_~n2~0) .cse5)))) is different from false [2023-01-28 02:31:40,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:40,589 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 365 treesize of output 429 [2023-01-28 02:31:40,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:40,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 244 [2023-01-28 02:31:40,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 209 [2023-01-28 02:31:40,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 203 [2023-01-28 02:31:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:31:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340218896] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:43,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:43,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2023-01-28 02:31:43,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852076311] [2023-01-28 02:31:43,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:43,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 02:31:43,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 02:31:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=515, Unknown=1, NotChecked=46, Total=650 [2023-01-28 02:31:43,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 483 [2023-01-28 02:31:43,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 190 transitions, 2848 flow. Second operand has 26 states, 26 states have (on average 143.03846153846155) internal successors, (3719), 26 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:43,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:43,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 483 [2023-01-28 02:31:43,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:47,023 INFO L130 PetriNetUnfolder]: 2032/3676 cut-off events. [2023-01-28 02:31:47,023 INFO L131 PetriNetUnfolder]: For 41979/41979 co-relation queries the response was YES. [2023-01-28 02:31:47,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23868 conditions, 3676 events. 2032/3676 cut-off events. For 41979/41979 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23463 event pairs, 694 based on Foata normal form. 76/3752 useless extension candidates. Maximal degree in co-relation 23791. Up to 2697 conditions per place. [2023-01-28 02:31:47,078 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 162 selfloop transitions, 59 changer transitions 0/221 dead transitions. [2023-01-28 02:31:47,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 221 transitions, 3556 flow [2023-01-28 02:31:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:31:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:31:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1614 transitions. [2023-01-28 02:31:47,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037831733483907 [2023-01-28 02:31:47,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1614 transitions. [2023-01-28 02:31:47,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1614 transitions. [2023-01-28 02:31:47,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:47,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1614 transitions. [2023-01-28 02:31:47,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.72727272727272) internal successors, (1614), 11 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:47,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:47,085 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:47,085 INFO L175 Difference]: Start difference. First operand has 141 places, 190 transitions, 2848 flow. Second operand 11 states and 1614 transitions. [2023-01-28 02:31:47,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 221 transitions, 3556 flow [2023-01-28 02:31:47,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 221 transitions, 3314 flow, removed 44 selfloop flow, removed 8 redundant places. [2023-01-28 02:31:47,230 INFO L231 Difference]: Finished difference. Result has 144 places, 185 transitions, 2678 flow [2023-01-28 02:31:47,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=2527, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2678, PETRI_PLACES=144, PETRI_TRANSITIONS=185} [2023-01-28 02:31:47,231 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 119 predicate places. [2023-01-28 02:31:47,231 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 185 transitions, 2678 flow [2023-01-28 02:31:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 143.03846153846155) internal successors, (3719), 26 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:47,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:47,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:47,436 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:47,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash 806001645, now seen corresponding path program 12 times [2023-01-28 02:31:47,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:47,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644791852] [2023-01-28 02:31:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:47,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:47,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:47,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644791852] [2023-01-28 02:31:47,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644791852] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:47,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952162657] [2023-01-28 02:31:47,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:31:47,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:47,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:47,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:47,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 02:31:47,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 02:31:47,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:47,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:31:47,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:48,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:48,729 INFO L321 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2023-01-28 02:31:48,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 206 treesize of output 223 [2023-01-28 02:31:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952162657] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:48,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:48,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 9] total 26 [2023-01-28 02:31:48,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254606029] [2023-01-28 02:31:48,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:48,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:31:48,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:48,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:31:48,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:31:48,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 483 [2023-01-28 02:31:48,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 185 transitions, 2678 flow. Second operand has 9 states, 9 states have (on average 144.11111111111111) internal successors, (1297), 9 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:48,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:48,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 483 [2023-01-28 02:31:48,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:49,987 INFO L130 PetriNetUnfolder]: 2130/3900 cut-off events. [2023-01-28 02:31:49,987 INFO L131 PetriNetUnfolder]: For 39081/39081 co-relation queries the response was YES. [2023-01-28 02:31:50,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24739 conditions, 3900 events. 2130/3900 cut-off events. For 39081/39081 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25434 event pairs, 446 based on Foata normal form. 6/3906 useless extension candidates. Maximal degree in co-relation 24662. Up to 2077 conditions per place. [2023-01-28 02:31:50,015 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 123 selfloop transitions, 127 changer transitions 4/254 dead transitions. [2023-01-28 02:31:50,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 254 transitions, 3891 flow [2023-01-28 02:31:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:31:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:31:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1785 transitions. [2023-01-28 02:31:50,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3079710144927536 [2023-01-28 02:31:50,017 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1785 transitions. [2023-01-28 02:31:50,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1785 transitions. [2023-01-28 02:31:50,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:50,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1785 transitions. [2023-01-28 02:31:50,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 148.75) internal successors, (1785), 12 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 483.0) internal successors, (6279), 13 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,022 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 483.0) internal successors, (6279), 13 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,022 INFO L175 Difference]: Start difference. First operand has 144 places, 185 transitions, 2678 flow. Second operand 12 states and 1785 transitions. [2023-01-28 02:31:50,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 254 transitions, 3891 flow [2023-01-28 02:31:50,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 254 transitions, 3741 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:50,166 INFO L231 Difference]: Finished difference. Result has 153 places, 225 transitions, 3596 flow [2023-01-28 02:31:50,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3596, PETRI_PLACES=153, PETRI_TRANSITIONS=225} [2023-01-28 02:31:50,166 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 128 predicate places. [2023-01-28 02:31:50,167 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 225 transitions, 3596 flow [2023-01-28 02:31:50,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 144.11111111111111) internal successors, (1297), 9 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:50,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:50,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:50,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 02:31:50,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:50,372 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:50,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1568119743, now seen corresponding path program 13 times [2023-01-28 02:31:50,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:50,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540869770] [2023-01-28 02:31:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:50,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540869770] [2023-01-28 02:31:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540869770] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990665736] [2023-01-28 02:31:50,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:31:50,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:50,761 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:50,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 02:31:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:50,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 02:31:50,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:51,005 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:51,055 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:51,099 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:51,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:51,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,650 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 1 case distinctions, treesize of input 48 treesize of output 37 [2023-01-28 02:31:51,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,658 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 294 treesize of output 274 [2023-01-28 02:31:51,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,667 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 239 [2023-01-28 02:31:51,676 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,677 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 223 [2023-01-28 02:31:51,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,808 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 1 case distinctions, treesize of input 48 treesize of output 37 [2023-01-28 02:31:51,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,817 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 1206 treesize of output 1090 [2023-01-28 02:31:51,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,850 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 239 [2023-01-28 02:31:51,860 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:51,861 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 223 [2023-01-28 02:31:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990665736] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:52,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:52,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2023-01-28 02:31:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202423394] [2023-01-28 02:31:52,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:52,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:31:52,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:52,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:31:52,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=560, Unknown=14, NotChecked=0, Total=702 [2023-01-28 02:31:52,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 483 [2023-01-28 02:31:52,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 225 transitions, 3596 flow. Second operand has 27 states, 27 states have (on average 138.55555555555554) internal successors, (3741), 27 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:52,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:52,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 483 [2023-01-28 02:31:52,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:53,444 INFO L130 PetriNetUnfolder]: 2092/3794 cut-off events. [2023-01-28 02:31:53,445 INFO L131 PetriNetUnfolder]: For 45543/45543 co-relation queries the response was YES. [2023-01-28 02:31:53,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26519 conditions, 3794 events. 2092/3794 cut-off events. For 45543/45543 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24530 event pairs, 410 based on Foata normal form. 8/3802 useless extension candidates. Maximal degree in co-relation 26437. Up to 1889 conditions per place. [2023-01-28 02:31:53,471 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 97 selfloop transitions, 156 changer transitions 1/254 dead transitions. [2023-01-28 02:31:53,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 254 transitions, 4231 flow [2023-01-28 02:31:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:31:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:31:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2132 transitions. [2023-01-28 02:31:53,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29427191166321603 [2023-01-28 02:31:53,474 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2132 transitions. [2023-01-28 02:31:53,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2132 transitions. [2023-01-28 02:31:53,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:53,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2132 transitions. [2023-01-28 02:31:53,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.13333333333333) internal successors, (2132), 15 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:53,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 483.0) internal successors, (7728), 16 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:53,479 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 483.0) internal successors, (7728), 16 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:53,479 INFO L175 Difference]: Start difference. First operand has 153 places, 225 transitions, 3596 flow. Second operand 15 states and 2132 transitions. [2023-01-28 02:31:53,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 254 transitions, 4231 flow [2023-01-28 02:31:53,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 254 transitions, 4122 flow, removed 53 selfloop flow, removed 2 redundant places. [2023-01-28 02:31:53,657 INFO L231 Difference]: Finished difference. Result has 167 places, 223 transitions, 3770 flow [2023-01-28 02:31:53,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3770, PETRI_PLACES=167, PETRI_TRANSITIONS=223} [2023-01-28 02:31:53,658 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 142 predicate places. [2023-01-28 02:31:53,658 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 223 transitions, 3770 flow [2023-01-28 02:31:53,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 138.55555555555554) internal successors, (3741), 27 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:53,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:53,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:53,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:53,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:31:53,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1588118134, now seen corresponding path program 1 times [2023-01-28 02:31:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:53,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023734153] [2023-01-28 02:31:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:54,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023734153] [2023-01-28 02:31:54,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023734153] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361739625] [2023-01-28 02:31:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:54,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:54,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:54,537 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:54,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 02:31:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:54,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 02:31:54,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:54,743 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:31:54,780 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:54,812 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:31:55,055 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:31:55,055 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 39 treesize of output 19 [2023-01-28 02:31:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:55,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:01,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:01,996 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:32:02,006 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:32:02,006 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 278 treesize of output 253 [2023-01-28 02:32:02,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:02,016 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 222 [2023-01-28 02:32:02,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:02,027 INFO L350 Elim1Store]: Elim1 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 214 treesize of output 206 [2023-01-28 02:32:02,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:02,380 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:32:02,390 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:32:02,391 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 566 treesize of output 509 [2023-01-28 02:32:02,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:02,412 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 238 [2023-01-28 02:32:02,421 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:02,422 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 206 [2023-01-28 02:32:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361739625] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:02,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 35 [2023-01-28 02:32:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076452362] [2023-01-28 02:32:02,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:02,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-01-28 02:32:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-01-28 02:32:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1077, Unknown=14, NotChecked=0, Total=1332 [2023-01-28 02:32:02,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 483 [2023-01-28 02:32:02,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 223 transitions, 3770 flow. Second operand has 37 states, 37 states have (on average 129.56756756756758) internal successors, (4794), 37 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:02,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:02,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 483 [2023-01-28 02:32:02,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:05,354 INFO L130 PetriNetUnfolder]: 2252/4152 cut-off events. [2023-01-28 02:32:05,354 INFO L131 PetriNetUnfolder]: For 53684/53684 co-relation queries the response was YES. [2023-01-28 02:32:05,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29631 conditions, 4152 events. 2252/4152 cut-off events. For 53684/53684 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27813 event pairs, 388 based on Foata normal form. 10/4162 useless extension candidates. Maximal degree in co-relation 29544. Up to 1461 conditions per place. [2023-01-28 02:32:05,386 INFO L137 encePairwiseOnDemand]: 467/483 looper letters, 279 selfloop transitions, 125 changer transitions 11/415 dead transitions. [2023-01-28 02:32:05,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 415 transitions, 6489 flow [2023-01-28 02:32:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 02:32:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 02:32:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3247 transitions. [2023-01-28 02:32:05,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2801069703243616 [2023-01-28 02:32:05,389 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3247 transitions. [2023-01-28 02:32:05,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3247 transitions. [2023-01-28 02:32:05,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:05,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3247 transitions. [2023-01-28 02:32:05,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 135.29166666666666) internal successors, (3247), 24 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 483.0) internal successors, (12075), 25 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,398 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 483.0) internal successors, (12075), 25 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,398 INFO L175 Difference]: Start difference. First operand has 167 places, 223 transitions, 3770 flow. Second operand 24 states and 3247 transitions. [2023-01-28 02:32:05,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 415 transitions, 6489 flow [2023-01-28 02:32:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 415 transitions, 6381 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-01-28 02:32:05,600 INFO L231 Difference]: Finished difference. Result has 189 places, 271 transitions, 4561 flow [2023-01-28 02:32:05,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4561, PETRI_PLACES=189, PETRI_TRANSITIONS=271} [2023-01-28 02:32:05,600 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 164 predicate places. [2023-01-28 02:32:05,600 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 271 transitions, 4561 flow [2023-01-28 02:32:05,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 129.56756756756758) internal successors, (4794), 37 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:05,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:05,601 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] [2023-01-28 02:32:05,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:05,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:05,805 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:05,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1970275389, now seen corresponding path program 1 times [2023-01-28 02:32:05,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:05,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797362038] [2023-01-28 02:32:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:32:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:06,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797362038] [2023-01-28 02:32:06,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797362038] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:06,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592575050] [2023-01-28 02:32:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:06,129 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:06,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 02:32:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:06,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 02:32:06,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:06,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:06,518 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 130 treesize of output 111 [2023-01-28 02:32:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:32:06,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:06,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:06,816 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 185 treesize of output 165 [2023-01-28 02:32:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:32:07,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592575050] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:07,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:07,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2023-01-28 02:32:07,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761982765] [2023-01-28 02:32:07,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:07,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:32:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:32:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:32:07,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:32:07,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 271 transitions, 4561 flow. Second operand has 27 states, 27 states have (on average 165.22222222222223) internal successors, (4461), 27 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:07,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:07,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:32:07,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:09,629 INFO L130 PetriNetUnfolder]: 5541/10406 cut-off events. [2023-01-28 02:32:09,629 INFO L131 PetriNetUnfolder]: For 147387/147387 co-relation queries the response was YES. [2023-01-28 02:32:09,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75845 conditions, 10406 events. 5541/10406 cut-off events. For 147387/147387 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 84580 event pairs, 815 based on Foata normal form. 314/10720 useless extension candidates. Maximal degree in co-relation 75407. Up to 4092 conditions per place. [2023-01-28 02:32:09,723 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 696 selfloop transitions, 229 changer transitions 21/946 dead transitions. [2023-01-28 02:32:09,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 946 transitions, 17285 flow [2023-01-28 02:32:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:32:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:32:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3251 transitions. [2023-01-28 02:32:09,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35425520322545495 [2023-01-28 02:32:09,727 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3251 transitions. [2023-01-28 02:32:09,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3251 transitions. [2023-01-28 02:32:09,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:09,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3251 transitions. [2023-01-28 02:32:09,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 171.10526315789474) internal successors, (3251), 19 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:09,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 483.0) internal successors, (9660), 20 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:09,734 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 483.0) internal successors, (9660), 20 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:09,734 INFO L175 Difference]: Start difference. First operand has 189 places, 271 transitions, 4561 flow. Second operand 19 states and 3251 transitions. [2023-01-28 02:32:09,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 946 transitions, 17285 flow [2023-01-28 02:32:10,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 946 transitions, 16866 flow, removed 88 selfloop flow, removed 9 redundant places. [2023-01-28 02:32:10,597 INFO L231 Difference]: Finished difference. Result has 204 places, 492 transitions, 9058 flow [2023-01-28 02:32:10,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9058, PETRI_PLACES=204, PETRI_TRANSITIONS=492} [2023-01-28 02:32:10,597 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 179 predicate places. [2023-01-28 02:32:10,597 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 492 transitions, 9058 flow [2023-01-28 02:32:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 165.22222222222223) internal successors, (4461), 27 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:10,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:10,598 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] [2023-01-28 02:32:10,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:10,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:10,802 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:10,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1997958036, now seen corresponding path program 2 times [2023-01-28 02:32:10,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:10,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194033148] [2023-01-28 02:32:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:10,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194033148] [2023-01-28 02:32:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194033148] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594269912] [2023-01-28 02:32:11,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:32:11,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:11,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:11,354 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:11,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 02:32:11,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:32:11,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:11,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 02:32:11,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:11,807 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:11,808 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 39 treesize of output 19 [2023-01-28 02:32:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:32:11,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:32:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594269912] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:32:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:32:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650576181] [2023-01-28 02:32:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:32:11,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:32:11,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 492 transitions, 9058 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:11,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:11,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:32:11,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:14,148 INFO L130 PetriNetUnfolder]: 5556/10466 cut-off events. [2023-01-28 02:32:14,148 INFO L131 PetriNetUnfolder]: For 171064/171064 co-relation queries the response was YES. [2023-01-28 02:32:14,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80752 conditions, 10466 events. 5556/10466 cut-off events. For 171064/171064 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 85792 event pairs, 2130 based on Foata normal form. 15/10481 useless extension candidates. Maximal degree in co-relation 78879. Up to 7629 conditions per place. [2023-01-28 02:32:14,229 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 454 selfloop transitions, 89 changer transitions 14/557 dead transitions. [2023-01-28 02:32:14,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 557 transitions, 11037 flow [2023-01-28 02:32:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:32:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:32:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1774 transitions. [2023-01-28 02:32:14,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33389798607189913 [2023-01-28 02:32:14,231 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1774 transitions. [2023-01-28 02:32:14,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1774 transitions. [2023-01-28 02:32:14,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:14,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1774 transitions. [2023-01-28 02:32:14,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.27272727272728) internal successors, (1774), 11 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,236 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:14,236 INFO L175 Difference]: Start difference. First operand has 204 places, 492 transitions, 9058 flow. Second operand 11 states and 1774 transitions. [2023-01-28 02:32:14,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 557 transitions, 11037 flow [2023-01-28 02:32:15,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 557 transitions, 10887 flow, removed 71 selfloop flow, removed 4 redundant places. [2023-01-28 02:32:15,730 INFO L231 Difference]: Finished difference. Result has 213 places, 500 transitions, 9337 flow [2023-01-28 02:32:15,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=8928, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9337, PETRI_PLACES=213, PETRI_TRANSITIONS=500} [2023-01-28 02:32:15,730 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 188 predicate places. [2023-01-28 02:32:15,730 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 500 transitions, 9337 flow [2023-01-28 02:32:15,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:15,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:15,731 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] [2023-01-28 02:32:15,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-01-28 02:32:15,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:15,936 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:15,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 773329696, now seen corresponding path program 3 times [2023-01-28 02:32:15,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:15,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687020370] [2023-01-28 02:32:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:16,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:16,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687020370] [2023-01-28 02:32:16,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687020370] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:16,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740689196] [2023-01-28 02:32:16,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:32:16,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:16,469 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:16,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 02:32:16,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:32:16,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:16,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 02:32:16,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:16,896 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:16,897 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 39 treesize of output 19 [2023-01-28 02:32:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:32:16,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:32:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740689196] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:16,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:32:16,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:32:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859940788] [2023-01-28 02:32:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:16,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:16,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:32:16,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:32:16,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 500 transitions, 9337 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:16,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:16,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:32:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:19,492 INFO L130 PetriNetUnfolder]: 5556/10476 cut-off events. [2023-01-28 02:32:19,492 INFO L131 PetriNetUnfolder]: For 177652/177652 co-relation queries the response was YES. [2023-01-28 02:32:19,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81812 conditions, 10476 events. 5556/10476 cut-off events. For 177652/177652 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 85763 event pairs, 2134 based on Foata normal form. 25/10501 useless extension candidates. Maximal degree in co-relation 81181. Up to 7629 conditions per place. [2023-01-28 02:32:19,587 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 452 selfloop transitions, 81 changer transitions 19/552 dead transitions. [2023-01-28 02:32:19,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 552 transitions, 11057 flow [2023-01-28 02:32:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:32:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:32:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1775 transitions. [2023-01-28 02:32:19,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33408620365142105 [2023-01-28 02:32:19,591 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1775 transitions. [2023-01-28 02:32:19,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1775 transitions. [2023-01-28 02:32:19,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:19,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1775 transitions. [2023-01-28 02:32:19,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.36363636363637) internal successors, (1775), 11 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,595 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:19,595 INFO L175 Difference]: Start difference. First operand has 213 places, 500 transitions, 9337 flow. Second operand 11 states and 1775 transitions. [2023-01-28 02:32:19,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 552 transitions, 11057 flow [2023-01-28 02:32:20,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 552 transitions, 10869 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-28 02:32:21,004 INFO L231 Difference]: Finished difference. Result has 216 places, 492 transitions, 9185 flow [2023-01-28 02:32:21,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=9153, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9185, PETRI_PLACES=216, PETRI_TRANSITIONS=492} [2023-01-28 02:32:21,005 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 191 predicate places. [2023-01-28 02:32:21,005 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 492 transitions, 9185 flow [2023-01-28 02:32:21,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:21,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:21,005 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] [2023-01-28 02:32:21,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:21,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 02:32:21,210 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:21,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 176099406, now seen corresponding path program 4 times [2023-01-28 02:32:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108508069] [2023-01-28 02:32:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108508069] [2023-01-28 02:32:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108508069] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020182985] [2023-01-28 02:32:21,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:32:21,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:21,708 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:21,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 02:32:21,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:32:21,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:21,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 46 conjunts are in the unsatisfiable core [2023-01-28 02:32:21,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:21,853 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:32:21,882 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:32:21,906 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:32:22,050 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:22,050 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 52 treesize of output 24 [2023-01-28 02:32:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:32:22,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:32:22,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020182985] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:22,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:32:22,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 11] total 23 [2023-01-28 02:32:22,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673522394] [2023-01-28 02:32:22,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:22,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:32:22,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:32:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-01-28 02:32:22,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 483 [2023-01-28 02:32:22,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 492 transitions, 9185 flow. Second operand has 8 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:22,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:22,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 483 [2023-01-28 02:32:22,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:26,250 INFO L130 PetriNetUnfolder]: 6111/11546 cut-off events. [2023-01-28 02:32:26,250 INFO L131 PetriNetUnfolder]: For 203729/203729 co-relation queries the response was YES. [2023-01-28 02:32:26,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92624 conditions, 11546 events. 6111/11546 cut-off events. For 203729/203729 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 96230 event pairs, 2380 based on Foata normal form. 5/11551 useless extension candidates. Maximal degree in co-relation 91902. Up to 9866 conditions per place. [2023-01-28 02:32:26,388 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 566 selfloop transitions, 54 changer transitions 8/628 dead transitions. [2023-01-28 02:32:26,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 628 transitions, 13070 flow [2023-01-28 02:32:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:32:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:32:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1378 transitions. [2023-01-28 02:32:26,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35662525879917184 [2023-01-28 02:32:26,391 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1378 transitions. [2023-01-28 02:32:26,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1378 transitions. [2023-01-28 02:32:26,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:26,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1378 transitions. [2023-01-28 02:32:26,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.25) internal successors, (1378), 8 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:26,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:26,394 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:26,394 INFO L175 Difference]: Start difference. First operand has 216 places, 492 transitions, 9185 flow. Second operand 8 states and 1378 transitions. [2023-01-28 02:32:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 628 transitions, 13070 flow [2023-01-28 02:32:28,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 628 transitions, 12734 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-01-28 02:32:28,491 INFO L231 Difference]: Finished difference. Result has 215 places, 528 transitions, 10116 flow [2023-01-28 02:32:28,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=9005, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10116, PETRI_PLACES=215, PETRI_TRANSITIONS=528} [2023-01-28 02:32:28,492 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 190 predicate places. [2023-01-28 02:32:28,492 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 528 transitions, 10116 flow [2023-01-28 02:32:28,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:28,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:28,492 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] [2023-01-28 02:32:28,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:28,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 02:32:28,697 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:28,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 706975026, now seen corresponding path program 5 times [2023-01-28 02:32:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358459235] [2023-01-28 02:32:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358459235] [2023-01-28 02:32:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358459235] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671323486] [2023-01-28 02:32:29,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:32:29,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:29,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:29,124 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:29,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 02:32:29,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:32:29,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:29,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 02:32:29,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:29,367 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:32:29,420 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:32:29,458 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:32:29,726 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:29,726 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 39 treesize of output 19 [2023-01-28 02:32:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:29,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:34,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:34,684 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:32:34,694 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:32:34,695 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 278 treesize of output 253 [2023-01-28 02:32:34,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:34,705 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 222 [2023-01-28 02:32:34,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:34,714 INFO L350 Elim1Store]: Elim1 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 214 treesize of output 206 [2023-01-28 02:32:34,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:34,964 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:32:34,975 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:32:34,976 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 566 treesize of output 509 [2023-01-28 02:32:34,997 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:34,997 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 238 [2023-01-28 02:32:35,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:35,008 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 206 [2023-01-28 02:32:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671323486] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:35,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:35,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 33 [2023-01-28 02:32:35,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585482397] [2023-01-28 02:32:35,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 02:32:35,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 02:32:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=969, Unknown=13, NotChecked=0, Total=1190 [2023-01-28 02:32:35,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 483 [2023-01-28 02:32:35,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 528 transitions, 10116 flow. Second operand has 35 states, 35 states have (on average 129.5142857142857) internal successors, (4533), 35 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:35,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:35,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 483 [2023-01-28 02:32:35,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:39,342 INFO L130 PetriNetUnfolder]: 6007/11563 cut-off events. [2023-01-28 02:32:39,342 INFO L131 PetriNetUnfolder]: For 199959/199959 co-relation queries the response was YES. [2023-01-28 02:32:39,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90881 conditions, 11563 events. 6007/11563 cut-off events. For 199959/199959 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 98595 event pairs, 1584 based on Foata normal form. 130/11693 useless extension candidates. Maximal degree in co-relation 90156. Up to 5748 conditions per place. [2023-01-28 02:32:39,445 INFO L137 encePairwiseOnDemand]: 467/483 looper letters, 393 selfloop transitions, 240 changer transitions 32/665 dead transitions. [2023-01-28 02:32:39,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 665 transitions, 13009 flow [2023-01-28 02:32:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 02:32:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 02:32:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2963 transitions. [2023-01-28 02:32:39,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27884434406173536 [2023-01-28 02:32:39,448 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2963 transitions. [2023-01-28 02:32:39,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2963 transitions. [2023-01-28 02:32:39,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:39,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2963 transitions. [2023-01-28 02:32:39,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 134.6818181818182) internal successors, (2963), 22 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:39,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 483.0) internal successors, (11109), 23 states have internal predecessors, (11109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:39,455 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 483.0) internal successors, (11109), 23 states have internal predecessors, (11109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:39,455 INFO L175 Difference]: Start difference. First operand has 215 places, 528 transitions, 10116 flow. Second operand 22 states and 2963 transitions. [2023-01-28 02:32:39,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 665 transitions, 13009 flow [2023-01-28 02:32:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 665 transitions, 12948 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 02:32:41,530 INFO L231 Difference]: Finished difference. Result has 240 places, 557 transitions, 11199 flow [2023-01-28 02:32:41,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=9902, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11199, PETRI_PLACES=240, PETRI_TRANSITIONS=557} [2023-01-28 02:32:41,530 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 215 predicate places. [2023-01-28 02:32:41,531 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 557 transitions, 11199 flow [2023-01-28 02:32:41,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 129.5142857142857) internal successors, (4533), 35 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:41,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:41,531 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] [2023-01-28 02:32:41,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:41,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 02:32:41,736 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:41,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1885109360, now seen corresponding path program 6 times [2023-01-28 02:32:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:41,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669424442] [2023-01-28 02:32:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669424442] [2023-01-28 02:32:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669424442] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405819803] [2023-01-28 02:32:42,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:32:42,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:42,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:42,214 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:42,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 02:32:42,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 02:32:42,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:32:42,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 02:32:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:42,701 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:42,702 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 39 treesize of output 19 [2023-01-28 02:32:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:32:42,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:32:42,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405819803] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:32:42,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:32:42,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:32:42,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306295559] [2023-01-28 02:32:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:32:42,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:32:42,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:32:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:32:42,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:32:42,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 557 transitions, 11199 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:42,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:42,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:32:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:45,757 INFO L130 PetriNetUnfolder]: 5962/11478 cut-off events. [2023-01-28 02:32:45,757 INFO L131 PetriNetUnfolder]: For 214391/214391 co-relation queries the response was YES. [2023-01-28 02:32:45,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93355 conditions, 11478 events. 5962/11478 cut-off events. For 214391/214391 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 97922 event pairs, 2155 based on Foata normal form. 10/11488 useless extension candidates. Maximal degree in co-relation 92788. Up to 7709 conditions per place. [2023-01-28 02:32:45,857 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 522 selfloop transitions, 68 changer transitions 28/618 dead transitions. [2023-01-28 02:32:45,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 618 transitions, 13102 flow [2023-01-28 02:32:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:32:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:32:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2087 transitions. [2023-01-28 02:32:45,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33237776716037587 [2023-01-28 02:32:45,859 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2087 transitions. [2023-01-28 02:32:45,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2087 transitions. [2023-01-28 02:32:45,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:32:45,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2087 transitions. [2023-01-28 02:32:45,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.53846153846155) internal successors, (2087), 13 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,864 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:45,864 INFO L175 Difference]: Start difference. First operand has 240 places, 557 transitions, 11199 flow. Second operand 13 states and 2087 transitions. [2023-01-28 02:32:45,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 618 transitions, 13102 flow [2023-01-28 02:32:47,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 618 transitions, 12536 flow, removed 114 selfloop flow, removed 14 redundant places. [2023-01-28 02:32:47,800 INFO L231 Difference]: Finished difference. Result has 239 places, 547 transitions, 10575 flow [2023-01-28 02:32:47,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10687, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10575, PETRI_PLACES=239, PETRI_TRANSITIONS=547} [2023-01-28 02:32:47,801 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 214 predicate places. [2023-01-28 02:32:47,801 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 547 transitions, 10575 flow [2023-01-28 02:32:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:47,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:32:47,802 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] [2023-01-28 02:32:47,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 02:32:48,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:48,004 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:32:48,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:32:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1136977276, now seen corresponding path program 7 times [2023-01-28 02:32:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:32:48,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241482014] [2023-01-28 02:32:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:32:48,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:32:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:48,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:32:48,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241482014] [2023-01-28 02:32:48,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241482014] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:32:48,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935079047] [2023-01-28 02:32:48,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:32:48,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:32:48,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:32:48,669 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:32:48,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 02:32:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:32:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 02:32:48,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:32:48,938 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:32:48,986 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:32:49,038 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:32:49,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:32:49,342 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 39 treesize of output 19 [2023-01-28 02:32:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:49,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:56,336 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:56,336 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:32:56,346 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:32:56,346 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 278 treesize of output 253 [2023-01-28 02:32:56,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:56,358 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 222 [2023-01-28 02:32:56,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:56,368 INFO L350 Elim1Store]: Elim1 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 214 treesize of output 206 [2023-01-28 02:32:56,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:56,587 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:32:56,597 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:32:56,597 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 278 treesize of output 253 [2023-01-28 02:32:56,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:56,608 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 222 [2023-01-28 02:32:56,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:56,617 INFO L350 Elim1Store]: Elim1 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 214 treesize of output 206 [2023-01-28 02:32:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:32:57,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935079047] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:57,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:57,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 34 [2023-01-28 02:32:57,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332799397] [2023-01-28 02:32:57,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-28 02:32:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-28 02:32:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1075, Unknown=16, NotChecked=0, Total=1260 [2023-01-28 02:32:57,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 483 [2023-01-28 02:32:57,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 547 transitions, 10575 flow. Second operand has 36 states, 36 states have (on average 129.58333333333334) internal successors, (4665), 36 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:57,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:57,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 483 [2023-01-28 02:32:57,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:01,565 INFO L130 PetriNetUnfolder]: 6314/12182 cut-off events. [2023-01-28 02:33:01,566 INFO L131 PetriNetUnfolder]: For 206362/206362 co-relation queries the response was YES. [2023-01-28 02:33:01,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97412 conditions, 12182 events. 6314/12182 cut-off events. For 206362/206362 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 105232 event pairs, 1949 based on Foata normal form. 30/12212 useless extension candidates. Maximal degree in co-relation 96625. Up to 7037 conditions per place. [2023-01-28 02:33:01,771 INFO L137 encePairwiseOnDemand]: 467/483 looper letters, 457 selfloop transitions, 146 changer transitions 64/667 dead transitions. [2023-01-28 02:33:01,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 667 transitions, 13351 flow [2023-01-28 02:33:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 02:33:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 02:33:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3474 transitions. [2023-01-28 02:33:01,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2766364070711897 [2023-01-28 02:33:01,780 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3474 transitions. [2023-01-28 02:33:01,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3474 transitions. [2023-01-28 02:33:01,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:01,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3474 transitions. [2023-01-28 02:33:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 133.6153846153846) internal successors, (3474), 26 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:01,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 483.0) internal successors, (13041), 27 states have internal predecessors, (13041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:01,791 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 483.0) internal successors, (13041), 27 states have internal predecessors, (13041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:01,791 INFO L175 Difference]: Start difference. First operand has 239 places, 547 transitions, 10575 flow. Second operand 26 states and 3474 transitions. [2023-01-28 02:33:01,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 667 transitions, 13351 flow [2023-01-28 02:33:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 667 transitions, 13127 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-01-28 02:33:03,755 INFO L231 Difference]: Finished difference. Result has 264 places, 533 transitions, 10593 flow [2023-01-28 02:33:03,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10383, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=10593, PETRI_PLACES=264, PETRI_TRANSITIONS=533} [2023-01-28 02:33:03,760 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 239 predicate places. [2023-01-28 02:33:03,760 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 533 transitions, 10593 flow [2023-01-28 02:33:03,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 129.58333333333334) internal successors, (4665), 36 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:03,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:03,760 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] [2023-01-28 02:33:03,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-01-28 02:33:03,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 02:33:03,962 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:03,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:03,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1536392364, now seen corresponding path program 8 times [2023-01-28 02:33:03,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:03,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673633539] [2023-01-28 02:33:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:03,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673633539] [2023-01-28 02:33:04,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673633539] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928892270] [2023-01-28 02:33:04,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:33:04,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:04,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:04,539 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:04,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 02:33:04,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:33:04,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:04,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 02:33:04,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:04,965 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:04,965 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 39 treesize of output 19 [2023-01-28 02:33:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:33:04,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:33:04,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928892270] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:04,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:33:04,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:33:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611312787] [2023-01-28 02:33:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:04,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:33:04,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:04,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:33:04,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:33:04,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:33:04,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 533 transitions, 10593 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:04,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:04,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:33:04,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:07,846 INFO L130 PetriNetUnfolder]: 6074/11662 cut-off events. [2023-01-28 02:33:07,846 INFO L131 PetriNetUnfolder]: For 250409/250409 co-relation queries the response was YES. [2023-01-28 02:33:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98583 conditions, 11662 events. 6074/11662 cut-off events. For 250409/250409 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 99818 event pairs, 2270 based on Foata normal form. 10/11672 useless extension candidates. Maximal degree in co-relation 97715. Up to 7757 conditions per place. [2023-01-28 02:33:07,958 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 473 selfloop transitions, 73 changer transitions 17/563 dead transitions. [2023-01-28 02:33:07,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 563 transitions, 11971 flow [2023-01-28 02:33:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:33:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:33:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1607 transitions. [2023-01-28 02:33:07,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.332712215320911 [2023-01-28 02:33:07,960 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1607 transitions. [2023-01-28 02:33:07,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1607 transitions. [2023-01-28 02:33:07,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:07,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1607 transitions. [2023-01-28 02:33:07,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.7) internal successors, (1607), 10 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:07,963 INFO L175 Difference]: Start difference. First operand has 264 places, 533 transitions, 10593 flow. Second operand 10 states and 1607 transitions. [2023-01-28 02:33:07,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 563 transitions, 11971 flow [2023-01-28 02:33:10,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 563 transitions, 11605 flow, removed 82 selfloop flow, removed 15 redundant places. [2023-01-28 02:33:10,407 INFO L231 Difference]: Finished difference. Result has 253 places, 531 transitions, 10354 flow [2023-01-28 02:33:10,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10243, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10354, PETRI_PLACES=253, PETRI_TRANSITIONS=531} [2023-01-28 02:33:10,410 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 228 predicate places. [2023-01-28 02:33:10,410 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 531 transitions, 10354 flow [2023-01-28 02:33:10,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:10,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:10,411 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] [2023-01-28 02:33:10,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-01-28 02:33:10,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 02:33:10,615 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:10,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash 86442636, now seen corresponding path program 9 times [2023-01-28 02:33:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:10,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947937300] [2023-01-28 02:33:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:11,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:11,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947937300] [2023-01-28 02:33:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947937300] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413890802] [2023-01-28 02:33:11,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:33:11,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:11,088 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:11,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 02:33:11,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:33:11,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:11,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 02:33:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:11,523 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:11,523 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 39 treesize of output 19 [2023-01-28 02:33:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:33:11,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:33:11,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413890802] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:11,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:33:11,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:33:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227757413] [2023-01-28 02:33:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:33:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:33:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:33:11,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:33:11,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 531 transitions, 10354 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:11,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:11,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:33:11,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:14,341 INFO L130 PetriNetUnfolder]: 5984/11477 cut-off events. [2023-01-28 02:33:14,341 INFO L131 PetriNetUnfolder]: For 241783/241783 co-relation queries the response was YES. [2023-01-28 02:33:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95276 conditions, 11477 events. 5984/11477 cut-off events. For 241783/241783 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 97121 event pairs, 1782 based on Foata normal form. 35/11512 useless extension candidates. Maximal degree in co-relation 94816. Up to 7692 conditions per place. [2023-01-28 02:33:14,470 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 322 selfloop transitions, 229 changer transitions 12/563 dead transitions. [2023-01-28 02:33:14,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 563 transitions, 11703 flow [2023-01-28 02:33:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:33:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:33:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1762 transitions. [2023-01-28 02:33:14,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33163937511763597 [2023-01-28 02:33:14,472 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1762 transitions. [2023-01-28 02:33:14,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1762 transitions. [2023-01-28 02:33:14,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:14,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1762 transitions. [2023-01-28 02:33:14,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 160.1818181818182) internal successors, (1762), 11 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:14,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:14,477 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:14,477 INFO L175 Difference]: Start difference. First operand has 253 places, 531 transitions, 10354 flow. Second operand 11 states and 1762 transitions. [2023-01-28 02:33:14,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 563 transitions, 11703 flow [2023-01-28 02:33:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 563 transitions, 11539 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-01-28 02:33:16,491 INFO L231 Difference]: Finished difference. Result has 252 places, 530 transitions, 10659 flow [2023-01-28 02:33:16,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10179, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10659, PETRI_PLACES=252, PETRI_TRANSITIONS=530} [2023-01-28 02:33:16,492 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 227 predicate places. [2023-01-28 02:33:16,492 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 530 transitions, 10659 flow [2023-01-28 02:33:16,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:16,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:16,492 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] [2023-01-28 02:33:16,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:16,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:16,696 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:16,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2043106630, now seen corresponding path program 10 times [2023-01-28 02:33:16,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:16,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079310591] [2023-01-28 02:33:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:16,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079310591] [2023-01-28 02:33:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079310591] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857337677] [2023-01-28 02:33:17,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:33:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:17,170 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:17,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 02:33:17,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:33:17,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 50 conjunts are in the unsatisfiable core [2023-01-28 02:33:17,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:17,336 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:33:17,367 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:33:17,393 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:33:17,649 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:17,650 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 39 treesize of output 19 [2023-01-28 02:33:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:33:17,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:33:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857337677] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:33:18,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 11] total 30 [2023-01-28 02:33:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446052622] [2023-01-28 02:33:18,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:18,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:33:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:33:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:33:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 483 [2023-01-28 02:33:18,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 530 transitions, 10659 flow. Second operand has 8 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:18,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:18,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 483 [2023-01-28 02:33:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:22,071 INFO L130 PetriNetUnfolder]: 6211/12217 cut-off events. [2023-01-28 02:33:22,071 INFO L131 PetriNetUnfolder]: For 277530/277530 co-relation queries the response was YES. [2023-01-28 02:33:22,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102996 conditions, 12217 events. 6211/12217 cut-off events. For 277530/277530 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 107244 event pairs, 1568 based on Foata normal form. 5/12222 useless extension candidates. Maximal degree in co-relation 101995. Up to 7182 conditions per place. [2023-01-28 02:33:22,205 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 347 selfloop transitions, 237 changer transitions 51/635 dead transitions. [2023-01-28 02:33:22,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 635 transitions, 13865 flow [2023-01-28 02:33:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:33:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:33:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1724 transitions. [2023-01-28 02:33:22,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.356935817805383 [2023-01-28 02:33:22,225 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1724 transitions. [2023-01-28 02:33:22,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1724 transitions. [2023-01-28 02:33:22,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:22,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1724 transitions. [2023-01-28 02:33:22,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 172.4) internal successors, (1724), 10 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:22,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:22,246 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:22,247 INFO L175 Difference]: Start difference. First operand has 252 places, 530 transitions, 10659 flow. Second operand 10 states and 1724 transitions. [2023-01-28 02:33:22,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 635 transitions, 13865 flow [2023-01-28 02:33:24,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 635 transitions, 13315 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 02:33:24,618 INFO L231 Difference]: Finished difference. Result has 257 places, 553 transitions, 11282 flow [2023-01-28 02:33:24,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11282, PETRI_PLACES=257, PETRI_TRANSITIONS=553} [2023-01-28 02:33:24,619 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 232 predicate places. [2023-01-28 02:33:24,619 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 553 transitions, 11282 flow [2023-01-28 02:33:24,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:24,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:24,619 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] [2023-01-28 02:33:24,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-28 02:33:24,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:24,824 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:24,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash -583152636, now seen corresponding path program 11 times [2023-01-28 02:33:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:24,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012426782] [2023-01-28 02:33:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:24,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:25,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012426782] [2023-01-28 02:33:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012426782] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583167305] [2023-01-28 02:33:25,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:33:25,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:25,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:25,345 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:25,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 02:33:25,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:33:25,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:25,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 51 conjunts are in the unsatisfiable core [2023-01-28 02:33:25,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:25,562 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:33:25,607 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:33:25,639 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:33:25,847 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:33:25,851 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:25,851 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 39 treesize of output 19 [2023-01-28 02:33:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:25,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583167305] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:26,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:33:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 11] total 29 [2023-01-28 02:33:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395750618] [2023-01-28 02:33:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:26,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:33:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:33:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:33:26,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 483 [2023-01-28 02:33:26,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 553 transitions, 11282 flow. Second operand has 11 states, 11 states have (on average 145.8181818181818) internal successors, (1604), 11 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:26,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:26,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 483 [2023-01-28 02:33:26,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:29,874 INFO L130 PetriNetUnfolder]: 5854/11738 cut-off events. [2023-01-28 02:33:29,874 INFO L131 PetriNetUnfolder]: For 262114/262114 co-relation queries the response was YES. [2023-01-28 02:33:29,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98403 conditions, 11738 events. 5854/11738 cut-off events. For 262114/262114 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 104361 event pairs, 1773 based on Foata normal form. 5/11743 useless extension candidates. Maximal degree in co-relation 98189. Up to 7971 conditions per place. [2023-01-28 02:33:29,988 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 331 selfloop transitions, 236 changer transitions 19/586 dead transitions. [2023-01-28 02:33:29,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 586 transitions, 12707 flow [2023-01-28 02:33:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:33:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:33:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1644 transitions. [2023-01-28 02:33:29,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3094297007340486 [2023-01-28 02:33:29,990 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1644 transitions. [2023-01-28 02:33:29,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1644 transitions. [2023-01-28 02:33:29,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:29,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1644 transitions. [2023-01-28 02:33:29,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 149.45454545454547) internal successors, (1644), 11 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:29,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:29,994 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:29,994 INFO L175 Difference]: Start difference. First operand has 257 places, 553 transitions, 11282 flow. Second operand 11 states and 1644 transitions. [2023-01-28 02:33:29,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 586 transitions, 12707 flow [2023-01-28 02:33:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 586 transitions, 12649 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-01-28 02:33:32,737 INFO L231 Difference]: Finished difference. Result has 263 places, 545 transitions, 11488 flow [2023-01-28 02:33:32,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11226, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11488, PETRI_PLACES=263, PETRI_TRANSITIONS=545} [2023-01-28 02:33:32,737 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 238 predicate places. [2023-01-28 02:33:32,738 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 545 transitions, 11488 flow [2023-01-28 02:33:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.8181818181818) internal successors, (1604), 11 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:32,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:32,738 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] [2023-01-28 02:33:32,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-01-28 02:33:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:32,942 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:32,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1270141606, now seen corresponding path program 12 times [2023-01-28 02:33:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:32,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216306471] [2023-01-28 02:33:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216306471] [2023-01-28 02:33:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216306471] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941473044] [2023-01-28 02:33:33,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:33:33,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:33,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:33,478 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:33,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 02:33:33,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 02:33:33,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:33,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 02:33:33,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:33,909 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:33,909 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 39 treesize of output 19 [2023-01-28 02:33:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:33:33,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:33:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941473044] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:33,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:33:33,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2023-01-28 02:33:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10339842] [2023-01-28 02:33:33,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:33,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:33:33,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:33:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:33:33,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:33:33,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 545 transitions, 11488 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:33,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:33,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:33:33,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:37,476 INFO L130 PetriNetUnfolder]: 5819/11653 cut-off events. [2023-01-28 02:33:37,476 INFO L131 PetriNetUnfolder]: For 266575/266575 co-relation queries the response was YES. [2023-01-28 02:33:37,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98564 conditions, 11653 events. 5819/11653 cut-off events. For 266575/266575 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 103332 event pairs, 1801 based on Foata normal form. 5/11658 useless extension candidates. Maximal degree in co-relation 98172. Up to 7977 conditions per place. [2023-01-28 02:33:37,586 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 326 selfloop transitions, 228 changer transitions 18/572 dead transitions. [2023-01-28 02:33:37,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 572 transitions, 12746 flow [2023-01-28 02:33:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:33:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:33:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1917 transitions. [2023-01-28 02:33:37,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307453416149068 [2023-01-28 02:33:37,588 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1917 transitions. [2023-01-28 02:33:37,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1917 transitions. [2023-01-28 02:33:37,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:37,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1917 transitions. [2023-01-28 02:33:37,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 159.75) internal successors, (1917), 12 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 483.0) internal successors, (6279), 13 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,593 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 483.0) internal successors, (6279), 13 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:37,593 INFO L175 Difference]: Start difference. First operand has 263 places, 545 transitions, 11488 flow. Second operand 12 states and 1917 transitions. [2023-01-28 02:33:37,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 572 transitions, 12746 flow [2023-01-28 02:33:39,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 572 transitions, 12215 flow, removed 15 selfloop flow, removed 13 redundant places. [2023-01-28 02:33:39,767 INFO L231 Difference]: Finished difference. Result has 257 places, 533 transitions, 11200 flow [2023-01-28 02:33:39,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10961, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11200, PETRI_PLACES=257, PETRI_TRANSITIONS=533} [2023-01-28 02:33:39,768 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 232 predicate places. [2023-01-28 02:33:39,768 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 533 transitions, 11200 flow [2023-01-28 02:33:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:39,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:39,768 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] [2023-01-28 02:33:39,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-01-28 02:33:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:39,972 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:39,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 785848930, now seen corresponding path program 13 times [2023-01-28 02:33:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142593365] [2023-01-28 02:33:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:40,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:40,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142593365] [2023-01-28 02:33:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142593365] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:40,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545956594] [2023-01-28 02:33:40,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:33:40,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:40,475 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:40,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 02:33:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:40,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 02:33:40,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:40,698 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:33:40,738 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:33:40,774 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:33:41,075 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:41,075 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 39 treesize of output 19 [2023-01-28 02:33:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:41,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:33:44,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:44,064 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:33:44,076 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:33:44,076 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 1142 treesize of output 1021 [2023-01-28 02:33:44,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:44,100 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 238 [2023-01-28 02:33:44,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:44,108 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 206 [2023-01-28 02:33:44,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:44,283 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 1 case distinctions, treesize of input 47 treesize of output 36 [2023-01-28 02:33:44,292 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:33:44,292 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 278 treesize of output 253 [2023-01-28 02:33:44,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:44,300 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 238 [2023-01-28 02:33:44,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:33:44,309 INFO L350 Elim1Store]: Elim1 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 230 treesize of output 206 [2023-01-28 02:33:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:44,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545956594] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:33:44,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:33:44,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 36 [2023-01-28 02:33:44,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406854116] [2023-01-28 02:33:44,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:33:44,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-01-28 02:33:44,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-01-28 02:33:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1145, Unknown=18, NotChecked=0, Total=1406 [2023-01-28 02:33:44,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 483 [2023-01-28 02:33:44,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 533 transitions, 11200 flow. Second operand has 38 states, 38 states have (on average 129.57894736842104) internal successors, (4924), 38 states have internal predecessors, (4924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:44,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:44,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 483 [2023-01-28 02:33:44,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:51,744 INFO L130 PetriNetUnfolder]: 5904/11630 cut-off events. [2023-01-28 02:33:51,744 INFO L131 PetriNetUnfolder]: For 277570/277570 co-relation queries the response was YES. [2023-01-28 02:33:51,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99639 conditions, 11630 events. 5904/11630 cut-off events. For 277570/277570 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 101410 event pairs, 1206 based on Foata normal form. 20/11650 useless extension candidates. Maximal degree in co-relation 99407. Up to 6650 conditions per place. [2023-01-28 02:33:51,860 INFO L137 encePairwiseOnDemand]: 468/483 looper letters, 478 selfloop transitions, 307 changer transitions 59/844 dead transitions. [2023-01-28 02:33:51,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 844 transitions, 17140 flow [2023-01-28 02:33:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-01-28 02:33:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-01-28 02:33:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6512 transitions. [2023-01-28 02:33:51,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27515105421050406 [2023-01-28 02:33:51,866 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6512 transitions. [2023-01-28 02:33:51,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6512 transitions. [2023-01-28 02:33:51,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:51,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6512 transitions. [2023-01-28 02:33:51,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 132.89795918367346) internal successors, (6512), 49 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:51,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 483.0) internal successors, (24150), 50 states have internal predecessors, (24150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:51,885 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 483.0) internal successors, (24150), 50 states have internal predecessors, (24150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:51,886 INFO L175 Difference]: Start difference. First operand has 257 places, 533 transitions, 11200 flow. Second operand 49 states and 6512 transitions. [2023-01-28 02:33:51,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 844 transitions, 17140 flow [2023-01-28 02:33:54,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 844 transitions, 16193 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-01-28 02:33:54,182 INFO L231 Difference]: Finished difference. Result has 306 places, 569 transitions, 12173 flow [2023-01-28 02:33:54,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=10198, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=12173, PETRI_PLACES=306, PETRI_TRANSITIONS=569} [2023-01-28 02:33:54,182 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 281 predicate places. [2023-01-28 02:33:54,182 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 569 transitions, 12173 flow [2023-01-28 02:33:54,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 129.57894736842104) internal successors, (4924), 38 states have internal predecessors, (4924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:54,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:33:54,183 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] [2023-01-28 02:33:54,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-01-28 02:33:54,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-28 02:33:54,387 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:33:54,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:33:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1895045882, now seen corresponding path program 14 times [2023-01-28 02:33:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:33:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012681147] [2023-01-28 02:33:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:33:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:33:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:33:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:33:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:33:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012681147] [2023-01-28 02:33:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012681147] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:33:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584487113] [2023-01-28 02:33:54,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:33:54,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:33:54,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:33:54,851 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:33:54,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 02:33:55,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:33:55,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:33:55,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 02:33:55,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:33:55,355 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:33:55,355 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 39 treesize of output 19 [2023-01-28 02:33:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:33:55,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:33:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584487113] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:33:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:33:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:33:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183927938] [2023-01-28 02:33:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:33:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:33:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:33:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:33:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:33:55,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:33:55,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 569 transitions, 12173 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:55,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:33:55,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:33:55,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:33:58,584 INFO L130 PetriNetUnfolder]: 5837/11448 cut-off events. [2023-01-28 02:33:58,585 INFO L131 PetriNetUnfolder]: For 330553/330553 co-relation queries the response was YES. [2023-01-28 02:33:58,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102415 conditions, 11448 events. 5837/11448 cut-off events. For 330553/330553 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 99516 event pairs, 2046 based on Foata normal form. 5/11453 useless extension candidates. Maximal degree in co-relation 102318. Up to 7869 conditions per place. [2023-01-28 02:33:58,694 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 532 selfloop transitions, 56 changer transitions 25/613 dead transitions. [2023-01-28 02:33:58,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 613 transitions, 13993 flow [2023-01-28 02:33:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:33:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:33:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1770 transitions. [2023-01-28 02:33:58,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3331451157538114 [2023-01-28 02:33:58,696 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1770 transitions. [2023-01-28 02:33:58,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1770 transitions. [2023-01-28 02:33:58,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:33:58,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1770 transitions. [2023-01-28 02:33:58,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 160.9090909090909) internal successors, (1770), 11 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:58,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:58,700 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 483.0) internal successors, (5796), 12 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:33:58,700 INFO L175 Difference]: Start difference. First operand has 306 places, 569 transitions, 12173 flow. Second operand 11 states and 1770 transitions. [2023-01-28 02:33:58,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 613 transitions, 13993 flow [2023-01-28 02:34:01,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 613 transitions, 13536 flow, removed 196 selfloop flow, removed 19 redundant places. [2023-01-28 02:34:01,259 INFO L231 Difference]: Finished difference. Result has 278 places, 560 transitions, 11681 flow [2023-01-28 02:34:01,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11818, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11681, PETRI_PLACES=278, PETRI_TRANSITIONS=560} [2023-01-28 02:34:01,260 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 253 predicate places. [2023-01-28 02:34:01,260 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 560 transitions, 11681 flow [2023-01-28 02:34:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:01,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:01,261 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] [2023-01-28 02:34:01,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:01,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:01,465 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:01,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1442779098, now seen corresponding path program 15 times [2023-01-28 02:34:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549887108] [2023-01-28 02:34:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:01,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:01,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549887108] [2023-01-28 02:34:01,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549887108] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:01,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704553775] [2023-01-28 02:34:01,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:34:01,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:01,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:01,895 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:01,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 02:34:02,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:34:02,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:02,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 02:34:02,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:02,364 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:34:02,364 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 39 treesize of output 19 [2023-01-28 02:34:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:34:02,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704553775] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:02,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:02,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 20 [2023-01-28 02:34:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801356447] [2023-01-28 02:34:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:34:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:34:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:34:02,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:34:02,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 560 transitions, 11681 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:02,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:02,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:34:02,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:05,415 INFO L130 PetriNetUnfolder]: 5797/11338 cut-off events. [2023-01-28 02:34:05,415 INFO L131 PetriNetUnfolder]: For 320621/320621 co-relation queries the response was YES. [2023-01-28 02:34:05,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100738 conditions, 11338 events. 5797/11338 cut-off events. For 320621/320621 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 97861 event pairs, 2165 based on Foata normal form. 5/11343 useless extension candidates. Maximal degree in co-relation 100646. Up to 7869 conditions per place. [2023-01-28 02:34:05,560 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 511 selfloop transitions, 58 changer transitions 19/588 dead transitions. [2023-01-28 02:34:05,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 588 transitions, 13125 flow [2023-01-28 02:34:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:34:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:34:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1604 transitions. [2023-01-28 02:34:05,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3320910973084886 [2023-01-28 02:34:05,563 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1604 transitions. [2023-01-28 02:34:05,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1604 transitions. [2023-01-28 02:34:05,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:05,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1604 transitions. [2023-01-28 02:34:05,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:05,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:05,567 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:05,567 INFO L175 Difference]: Start difference. First operand has 278 places, 560 transitions, 11681 flow. Second operand 10 states and 1604 transitions. [2023-01-28 02:34:05,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 588 transitions, 13125 flow [2023-01-28 02:34:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 588 transitions, 12974 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-01-28 02:34:08,188 INFO L231 Difference]: Finished difference. Result has 271 places, 551 transitions, 11483 flow [2023-01-28 02:34:08,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11532, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11483, PETRI_PLACES=271, PETRI_TRANSITIONS=551} [2023-01-28 02:34:08,189 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 246 predicate places. [2023-01-28 02:34:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 551 transitions, 11483 flow [2023-01-28 02:34:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:08,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:08,189 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] [2023-01-28 02:34:08,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-01-28 02:34:08,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:08,394 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:08,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1271388532, now seen corresponding path program 16 times [2023-01-28 02:34:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:08,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14376622] [2023-01-28 02:34:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:08,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:08,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:08,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14376622] [2023-01-28 02:34:08,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14376622] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42607917] [2023-01-28 02:34:08,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:34:08,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:08,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:08,853 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:08,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 02:34:08,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:34:08,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:08,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:34:08,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:09,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:34:09,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 02:34:09,254 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:34:09,255 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 39 treesize of output 19 [2023-01-28 02:34:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:34:09,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42607917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:09,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-01-28 02:34:09,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996215658] [2023-01-28 02:34:09,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:09,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:34:09,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:34:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2023-01-28 02:34:09,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 483 [2023-01-28 02:34:09,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 551 transitions, 11483 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:09,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:09,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 483 [2023-01-28 02:34:09,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:12,189 INFO L130 PetriNetUnfolder]: 5752/11268 cut-off events. [2023-01-28 02:34:12,189 INFO L131 PetriNetUnfolder]: For 314978/314978 co-relation queries the response was YES. [2023-01-28 02:34:12,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99596 conditions, 11268 events. 5752/11268 cut-off events. For 314978/314978 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 97337 event pairs, 1981 based on Foata normal form. 10/11278 useless extension candidates. Maximal degree in co-relation 99506. Up to 7865 conditions per place. [2023-01-28 02:34:12,540 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 459 selfloop transitions, 113 changer transitions 21/593 dead transitions. [2023-01-28 02:34:12,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 593 transitions, 13352 flow [2023-01-28 02:34:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:34:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:34:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1601 transitions. [2023-01-28 02:34:12,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33146997929606625 [2023-01-28 02:34:12,542 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1601 transitions. [2023-01-28 02:34:12,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1601 transitions. [2023-01-28 02:34:12,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:12,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1601 transitions. [2023-01-28 02:34:12,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.1) internal successors, (1601), 10 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:12,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:12,545 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:12,545 INFO L175 Difference]: Start difference. First operand has 271 places, 551 transitions, 11483 flow. Second operand 10 states and 1601 transitions. [2023-01-28 02:34:12,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 593 transitions, 13352 flow [2023-01-28 02:34:15,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 593 transitions, 13076 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-01-28 02:34:15,076 INFO L231 Difference]: Finished difference. Result has 267 places, 549 transitions, 11637 flow [2023-01-28 02:34:15,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11233, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11637, PETRI_PLACES=267, PETRI_TRANSITIONS=549} [2023-01-28 02:34:15,077 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 242 predicate places. [2023-01-28 02:34:15,077 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 549 transitions, 11637 flow [2023-01-28 02:34:15,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:15,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:15,077 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] [2023-01-28 02:34:15,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-01-28 02:34:15,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-01-28 02:34:15,281 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:15,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:15,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1771610170, now seen corresponding path program 17 times [2023-01-28 02:34:15,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:15,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067920806] [2023-01-28 02:34:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:15,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:15,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067920806] [2023-01-28 02:34:15,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067920806] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:15,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917182299] [2023-01-28 02:34:15,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:34:15,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:15,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:15,627 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:15,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-28 02:34:15,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:34:15,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:15,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 51 conjunts are in the unsatisfiable core [2023-01-28 02:34:15,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:15,828 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:34:15,871 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:34:15,954 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:34:16,066 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:34:16,066 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 52 treesize of output 24 [2023-01-28 02:34:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:16,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:34:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917182299] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:17,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:34:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 11] total 26 [2023-01-28 02:34:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755300979] [2023-01-28 02:34:17,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:17,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:34:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:34:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=598, Unknown=14, NotChecked=0, Total=756 [2023-01-28 02:34:17,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 483 [2023-01-28 02:34:17,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 549 transitions, 11637 flow. Second operand has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:17,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:17,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 483 [2023-01-28 02:34:17,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:19,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:34:23,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:34:25,184 INFO L130 PetriNetUnfolder]: 5756/11235 cut-off events. [2023-01-28 02:34:25,184 INFO L131 PetriNetUnfolder]: For 323262/323262 co-relation queries the response was YES. [2023-01-28 02:34:25,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99707 conditions, 11235 events. 5756/11235 cut-off events. For 323262/323262 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 96650 event pairs, 2166 based on Foata normal form. 5/11240 useless extension candidates. Maximal degree in co-relation 99616. Up to 7863 conditions per place. [2023-01-28 02:34:25,301 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 508 selfloop transitions, 123 changer transitions 12/643 dead transitions. [2023-01-28 02:34:25,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 643 transitions, 14617 flow [2023-01-28 02:34:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:34:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:34:25,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1898 transitions. [2023-01-28 02:34:25,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3022774327122153 [2023-01-28 02:34:25,303 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1898 transitions. [2023-01-28 02:34:25,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1898 transitions. [2023-01-28 02:34:25,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:25,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1898 transitions. [2023-01-28 02:34:25,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.0) internal successors, (1898), 13 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:25,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:25,307 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 483.0) internal successors, (6762), 14 states have internal predecessors, (6762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:25,307 INFO L175 Difference]: Start difference. First operand has 267 places, 549 transitions, 11637 flow. Second operand 13 states and 1898 transitions. [2023-01-28 02:34:25,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 643 transitions, 14617 flow [2023-01-28 02:34:27,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 643 transitions, 14324 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-01-28 02:34:27,887 INFO L231 Difference]: Finished difference. Result has 273 places, 576 transitions, 12331 flow [2023-01-28 02:34:27,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11405, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12331, PETRI_PLACES=273, PETRI_TRANSITIONS=576} [2023-01-28 02:34:27,888 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 248 predicate places. [2023-01-28 02:34:27,888 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 576 transitions, 12331 flow [2023-01-28 02:34:27,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:27,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:27,888 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] [2023-01-28 02:34:27,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 02:34:28,093 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:28,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -99068368, now seen corresponding path program 18 times [2023-01-28 02:34:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056209501] [2023-01-28 02:34:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056209501] [2023-01-28 02:34:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056209501] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33295468] [2023-01-28 02:34:28,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:34:28,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:28,616 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:28,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-28 02:34:28,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 02:34:28,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:28,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 02:34:28,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:28,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-01-28 02:34:29,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:34:29,079 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:34:29,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-01-28 02:34:29,220 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:34:29,220 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 39 treesize of output 19 [2023-01-28 02:34:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:34:29,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:29,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33295468] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:29,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:29,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 22 [2023-01-28 02:34:29,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839184549] [2023-01-28 02:34:29,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:29,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:34:29,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:34:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-01-28 02:34:29,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 483 [2023-01-28 02:34:29,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 576 transitions, 12331 flow. Second operand has 13 states, 13 states have (on average 147.53846153846155) internal successors, (1918), 13 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:29,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:29,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 483 [2023-01-28 02:34:29,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:32,438 INFO L130 PetriNetUnfolder]: 5695/11129 cut-off events. [2023-01-28 02:34:32,438 INFO L131 PetriNetUnfolder]: For 319229/319229 co-relation queries the response was YES. [2023-01-28 02:34:32,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98565 conditions, 11129 events. 5695/11129 cut-off events. For 319229/319229 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 95880 event pairs, 1812 based on Foata normal form. 45/11174 useless extension candidates. Maximal degree in co-relation 98472. Up to 7869 conditions per place. [2023-01-28 02:34:32,557 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 465 selfloop transitions, 125 changer transitions 23/613 dead transitions. [2023-01-28 02:34:32,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 613 transitions, 14061 flow [2023-01-28 02:34:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:34:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:34:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1532 transitions. [2023-01-28 02:34:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31718426501035196 [2023-01-28 02:34:32,559 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1532 transitions. [2023-01-28 02:34:32,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1532 transitions. [2023-01-28 02:34:32,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:32,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1532 transitions. [2023-01-28 02:34:32,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.2) internal successors, (1532), 10 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:32,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:32,562 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:32,562 INFO L175 Difference]: Start difference. First operand has 273 places, 576 transitions, 12331 flow. Second operand 10 states and 1532 transitions. [2023-01-28 02:34:32,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 613 transitions, 14061 flow [2023-01-28 02:34:35,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 613 transitions, 13996 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-01-28 02:34:35,135 INFO L231 Difference]: Finished difference. Result has 277 places, 563 transitions, 12334 flow [2023-01-28 02:34:35,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12221, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12334, PETRI_PLACES=277, PETRI_TRANSITIONS=563} [2023-01-28 02:34:35,136 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 252 predicate places. [2023-01-28 02:34:35,136 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 563 transitions, 12334 flow [2023-01-28 02:34:35,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 147.53846153846155) internal successors, (1918), 13 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:35,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:35,136 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] [2023-01-28 02:34:35,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:35,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-01-28 02:34:35,341 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:35,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash -349727208, now seen corresponding path program 19 times [2023-01-28 02:34:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045096780] [2023-01-28 02:34:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:35,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045096780] [2023-01-28 02:34:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045096780] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592272103] [2023-01-28 02:34:35,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:34:35,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:35,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:35,846 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:35,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-28 02:34:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:35,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-28 02:34:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:36,069 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:34:36,117 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:34:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:34:36,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:34:36,339 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 02:34:36,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2023-01-28 02:34:36,525 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:34:36,526 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 39 treesize of output 19 [2023-01-28 02:34:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:36,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:34:40,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:40,010 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 1 case distinctions, treesize of input 233 treesize of output 125 [2023-01-28 02:34:40,027 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:34:40,028 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 2042 treesize of output 1810 [2023-01-28 02:34:40,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:40,131 INFO L350 Elim1Store]: Elim1 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 978 treesize of output 918 [2023-01-28 02:34:40,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:40,155 INFO L350 Elim1Store]: Elim1 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 869 treesize of output 773 [2023-01-28 02:34:46,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:46,145 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 1 case distinctions, treesize of input 41 treesize of output 30 [2023-01-28 02:34:46,155 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:34:46,155 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 66 treesize of output 57 [2023-01-28 02:34:46,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:46,166 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 50 [2023-01-28 02:34:46,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:46,191 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 1 case distinctions, treesize of input 41 treesize of output 30 [2023-01-28 02:34:46,201 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-01-28 02:34:46,202 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 66 treesize of output 57 [2023-01-28 02:34:46,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:34:46,212 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 50 [2023-01-28 02:34:46,236 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 02:34:46,237 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 1 case distinctions, treesize of input 233 treesize of output 1 [2023-01-28 02:34:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592272103] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:34:50,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:34:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 36 [2023-01-28 02:34:50,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982215740] [2023-01-28 02:34:50,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:34:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-01-28 02:34:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-01-28 02:34:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1196, Unknown=32, NotChecked=0, Total=1406 [2023-01-28 02:34:50,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 483 [2023-01-28 02:34:50,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 563 transitions, 12334 flow. Second operand has 38 states, 38 states have (on average 129.5) internal successors, (4921), 38 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:50,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:50,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 483 [2023-01-28 02:34:50,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:55,735 INFO L130 PetriNetUnfolder]: 5562/10870 cut-off events. [2023-01-28 02:34:55,735 INFO L131 PetriNetUnfolder]: For 314747/314747 co-relation queries the response was YES. [2023-01-28 02:34:55,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96749 conditions, 10870 events. 5562/10870 cut-off events. For 314747/314747 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 93128 event pairs, 1247 based on Foata normal form. 65/10935 useless extension candidates. Maximal degree in co-relation 96654. Up to 4535 conditions per place. [2023-01-28 02:34:55,877 INFO L137 encePairwiseOnDemand]: 468/483 looper letters, 412 selfloop transitions, 244 changer transitions 33/689 dead transitions. [2023-01-28 02:34:55,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 689 transitions, 15650 flow [2023-01-28 02:34:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 02:34:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 02:34:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2547 transitions. [2023-01-28 02:34:55,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27754168028767573 [2023-01-28 02:34:55,880 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2547 transitions. [2023-01-28 02:34:55,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2547 transitions. [2023-01-28 02:34:55,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:55,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2547 transitions. [2023-01-28 02:34:55,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 134.05263157894737) internal successors, (2547), 19 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:55,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 483.0) internal successors, (9660), 20 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:55,885 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 483.0) internal successors, (9660), 20 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:55,885 INFO L175 Difference]: Start difference. First operand has 277 places, 563 transitions, 12334 flow. Second operand 19 states and 2547 transitions. [2023-01-28 02:34:55,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 689 transitions, 15650 flow [2023-01-28 02:34:58,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 689 transitions, 15396 flow, removed 21 selfloop flow, removed 11 redundant places. [2023-01-28 02:34:58,339 INFO L231 Difference]: Finished difference. Result has 286 places, 577 transitions, 13105 flow [2023-01-28 02:34:58,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11819, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13105, PETRI_PLACES=286, PETRI_TRANSITIONS=577} [2023-01-28 02:34:58,349 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 261 predicate places. [2023-01-28 02:34:58,349 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 577 transitions, 13105 flow [2023-01-28 02:34:58,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 129.5) internal successors, (4921), 38 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:58,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:58,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:58,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-01-28 02:34:58,554 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:34:58,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 904650408, now seen corresponding path program 20 times [2023-01-28 02:34:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:58,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4862346] [2023-01-28 02:34:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:58,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:34:59,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:59,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4862346] [2023-01-28 02:34:59,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4862346] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:59,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669136025] [2023-01-28 02:34:59,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:34:59,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:59,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:59,036 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:34:59,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-28 02:34:59,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:34:59,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:59,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:34:59,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:59,479 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:34:59,479 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 52 treesize of output 24 [2023-01-28 02:34:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:34:59,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669136025] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:59,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:59,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2023-01-28 02:34:59,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620248687] [2023-01-28 02:34:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:59,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:34:59,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:34:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:34:59,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 483 [2023-01-28 02:34:59,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 577 transitions, 13105 flow. Second operand has 11 states, 11 states have (on average 159.8181818181818) internal successors, (1758), 11 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:59,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:59,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 483 [2023-01-28 02:34:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:02,519 INFO L130 PetriNetUnfolder]: 5508/10701 cut-off events. [2023-01-28 02:35:02,519 INFO L131 PetriNetUnfolder]: For 321076/321076 co-relation queries the response was YES. [2023-01-28 02:35:02,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97511 conditions, 10701 events. 5508/10701 cut-off events. For 321076/321076 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 90737 event pairs, 1870 based on Foata normal form. 5/10706 useless extension candidates. Maximal degree in co-relation 97416. Up to 7964 conditions per place. [2023-01-28 02:35:02,647 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 524 selfloop transitions, 72 changer transitions 7/603 dead transitions. [2023-01-28 02:35:02,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 603 transitions, 14583 flow [2023-01-28 02:35:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:35:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:35:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1484 transitions. [2023-01-28 02:35:02,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413848631239936 [2023-01-28 02:35:02,648 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1484 transitions. [2023-01-28 02:35:02,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1484 transitions. [2023-01-28 02:35:02,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:02,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1484 transitions. [2023-01-28 02:35:02,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.88888888888889) internal successors, (1484), 9 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) [2023-01-28 02:35:02,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 483.0) internal successors, (4830), 10 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:02,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 483.0) internal successors, (4830), 10 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:02,652 INFO L175 Difference]: Start difference. First operand has 286 places, 577 transitions, 13105 flow. Second operand 9 states and 1484 transitions. [2023-01-28 02:35:02,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 603 transitions, 14583 flow [2023-01-28 02:35:04,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 603 transitions, 14229 flow, removed 42 selfloop flow, removed 15 redundant places. [2023-01-28 02:35:04,727 INFO L231 Difference]: Finished difference. Result has 275 places, 576 transitions, 12907 flow [2023-01-28 02:35:04,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12765, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12907, PETRI_PLACES=275, PETRI_TRANSITIONS=576} [2023-01-28 02:35:04,728 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 250 predicate places. [2023-01-28 02:35:04,728 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 576 transitions, 12907 flow [2023-01-28 02:35:04,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 159.8181818181818) internal successors, (1758), 11 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:04,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:04,728 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] [2023-01-28 02:35:04,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-01-28 02:35:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:04,933 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:04,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 642364352, now seen corresponding path program 1 times [2023-01-28 02:35:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253066537] [2023-01-28 02:35:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253066537] [2023-01-28 02:35:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253066537] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:35:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649202805] [2023-01-28 02:35:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:05,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:35:05,121 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:35:05,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-28 02:35:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:05,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-01-28 02:35:05,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:35:05,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:35:05,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:35:05,260 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-01-28 02:35:05,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-01-28 02:35:05,287 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:35:05,310 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:35:05,311 INFO L350 Elim1Store]: Elim1 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 [2023-01-28 02:35:05,343 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 [2023-01-28 02:35:05,380 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:35:05,406 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:35:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:35:05,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:35:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:05,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649202805] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:35:05,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:35:05,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 11] total 23 [2023-01-28 02:35:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724396735] [2023-01-28 02:35:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:05,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:35:05,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:35:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-01-28 02:35:05,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 483 [2023-01-28 02:35:05,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 576 transitions, 12907 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:05,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:05,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 483 [2023-01-28 02:35:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:08,252 INFO L130 PetriNetUnfolder]: 5504/10718 cut-off events. [2023-01-28 02:35:08,252 INFO L131 PetriNetUnfolder]: For 319308/319308 co-relation queries the response was YES. [2023-01-28 02:35:08,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96891 conditions, 10718 events. 5504/10718 cut-off events. For 319308/319308 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 90926 event pairs, 2113 based on Foata normal form. 20/10738 useless extension candidates. Maximal degree in co-relation 96799. Up to 9354 conditions per place. [2023-01-28 02:35:08,402 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 593 selfloop transitions, 41 changer transitions 2/636 dead transitions. [2023-01-28 02:35:08,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 636 transitions, 15320 flow [2023-01-28 02:35:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:35:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:35:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1122 transitions. [2023-01-28 02:35:08,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38716356107660455 [2023-01-28 02:35:08,404 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1122 transitions. [2023-01-28 02:35:08,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1122 transitions. [2023-01-28 02:35:08,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:08,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1122 transitions. [2023-01-28 02:35:08,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:08,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 483.0) internal successors, (3381), 7 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:08,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 483.0) internal successors, (3381), 7 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:08,406 INFO L175 Difference]: Start difference. First operand has 275 places, 576 transitions, 12907 flow. Second operand 6 states and 1122 transitions. [2023-01-28 02:35:08,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 636 transitions, 15320 flow [2023-01-28 02:35:10,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 636 transitions, 14777 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-01-28 02:35:10,856 INFO L231 Difference]: Finished difference. Result has 267 places, 588 transitions, 12880 flow [2023-01-28 02:35:10,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12397, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12880, PETRI_PLACES=267, PETRI_TRANSITIONS=588} [2023-01-28 02:35:10,857 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 242 predicate places. [2023-01-28 02:35:10,857 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 588 transitions, 12880 flow [2023-01-28 02:35:10,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:10,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:10,858 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] [2023-01-28 02:35:10,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-01-28 02:35:11,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-01-28 02:35:11,060 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:11,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2101077848, now seen corresponding path program 2 times [2023-01-28 02:35:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977830809] [2023-01-28 02:35:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:11,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:11,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977830809] [2023-01-28 02:35:11,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977830809] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:11,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:35:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765763249] [2023-01-28 02:35:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:35:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:35:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:35:11,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 483 [2023-01-28 02:35:11,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 588 transitions, 12880 flow. Second operand has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:11,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:11,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 483 [2023-01-28 02:35:11,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:13,898 INFO L130 PetriNetUnfolder]: 5576/10846 cut-off events. [2023-01-28 02:35:13,898 INFO L131 PetriNetUnfolder]: For 315481/315481 co-relation queries the response was YES. [2023-01-28 02:35:13,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97298 conditions, 10846 events. 5576/10846 cut-off events. For 315481/315481 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 92192 event pairs, 1987 based on Foata normal form. 56/10902 useless extension candidates. Maximal degree in co-relation 97204. Up to 8036 conditions per place. [2023-01-28 02:35:14,041 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 543 selfloop transitions, 74 changer transitions 1/618 dead transitions. [2023-01-28 02:35:14,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 618 transitions, 14649 flow [2023-01-28 02:35:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:35:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:35:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1252 transitions. [2023-01-28 02:35:14,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37030464359656906 [2023-01-28 02:35:14,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1252 transitions. [2023-01-28 02:35:14,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1252 transitions. [2023-01-28 02:35:14,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:14,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1252 transitions. [2023-01-28 02:35:14,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:14,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:14,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:14,045 INFO L175 Difference]: Start difference. First operand has 267 places, 588 transitions, 12880 flow. Second operand 7 states and 1252 transitions. [2023-01-28 02:35:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 618 transitions, 14649 flow [2023-01-28 02:35:16,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 618 transitions, 14599 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-01-28 02:35:16,342 INFO L231 Difference]: Finished difference. Result has 273 places, 594 transitions, 13179 flow [2023-01-28 02:35:16,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12835, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13179, PETRI_PLACES=273, PETRI_TRANSITIONS=594} [2023-01-28 02:35:16,342 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 248 predicate places. [2023-01-28 02:35:16,342 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 594 transitions, 13179 flow [2023-01-28 02:35:16,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:16,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:16,343 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] [2023-01-28 02:35:16,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-01-28 02:35:16,343 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:16,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2001726862, now seen corresponding path program 3 times [2023-01-28 02:35:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611178665] [2023-01-28 02:35:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611178665] [2023-01-28 02:35:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611178665] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:16,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:16,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:35:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405906787] [2023-01-28 02:35:16,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:16,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:35:16,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:16,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:35:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:35:16,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 483 [2023-01-28 02:35:16,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 594 transitions, 13179 flow. Second operand has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:16,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:16,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 483 [2023-01-28 02:35:16,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:19,101 INFO L130 PetriNetUnfolder]: 5247/10141 cut-off events. [2023-01-28 02:35:19,102 INFO L131 PetriNetUnfolder]: For 311998/311998 co-relation queries the response was YES. [2023-01-28 02:35:19,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92613 conditions, 10141 events. 5247/10141 cut-off events. For 311998/311998 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 84309 event pairs, 1985 based on Foata normal form. 56/10197 useless extension candidates. Maximal degree in co-relation 92518. Up to 8040 conditions per place. [2023-01-28 02:35:19,238 INFO L137 encePairwiseOnDemand]: 476/483 looper letters, 495 selfloop transitions, 87 changer transitions 0/582 dead transitions. [2023-01-28 02:35:19,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 582 transitions, 13962 flow [2023-01-28 02:35:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:35:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:35:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1252 transitions. [2023-01-28 02:35:19,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37030464359656906 [2023-01-28 02:35:19,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1252 transitions. [2023-01-28 02:35:19,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1252 transitions. [2023-01-28 02:35:19,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:19,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1252 transitions. [2023-01-28 02:35:19,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:19,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:19,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:19,243 INFO L175 Difference]: Start difference. First operand has 273 places, 594 transitions, 13179 flow. Second operand 7 states and 1252 transitions. [2023-01-28 02:35:19,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 582 transitions, 13962 flow [2023-01-28 02:35:21,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 582 transitions, 13810 flow, removed 35 selfloop flow, removed 9 redundant places. [2023-01-28 02:35:21,316 INFO L231 Difference]: Finished difference. Result has 264 places, 563 transitions, 12633 flow [2023-01-28 02:35:21,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12417, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12633, PETRI_PLACES=264, PETRI_TRANSITIONS=563} [2023-01-28 02:35:21,317 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 239 predicate places. [2023-01-28 02:35:21,317 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 563 transitions, 12633 flow [2023-01-28 02:35:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:21,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:21,317 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] [2023-01-28 02:35:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-28 02:35:21,317 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:21,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash 150263440, now seen corresponding path program 4 times [2023-01-28 02:35:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240826868] [2023-01-28 02:35:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:21,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:21,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240826868] [2023-01-28 02:35:21,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240826868] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:35:21,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066047060] [2023-01-28 02:35:21,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:35:21,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:21,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:35:21,537 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:35:21,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-28 02:35:21,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:35:21,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:35:21,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 02:35:21,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:35:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:21,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:35:21,807 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 02:35:21,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 48 [2023-01-28 02:35:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066047060] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:35:21,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:35:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-01-28 02:35:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977352992] [2023-01-28 02:35:21,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:35:21,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 02:35:21,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 02:35:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-01-28 02:35:21,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 483 [2023-01-28 02:35:21,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 563 transitions, 12633 flow. Second operand has 15 states, 15 states have (on average 173.6) internal successors, (2604), 15 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:21,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:21,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 483 [2023-01-28 02:35:21,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:24,446 INFO L130 PetriNetUnfolder]: 5289/10215 cut-off events. [2023-01-28 02:35:24,446 INFO L131 PetriNetUnfolder]: For 270388/270388 co-relation queries the response was YES. [2023-01-28 02:35:24,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91213 conditions, 10215 events. 5289/10215 cut-off events. For 270388/270388 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 84919 event pairs, 573 based on Foata normal form. 20/10235 useless extension candidates. Maximal degree in co-relation 91122. Up to 5855 conditions per place. [2023-01-28 02:35:24,576 INFO L137 encePairwiseOnDemand]: 475/483 looper letters, 354 selfloop transitions, 269 changer transitions 14/637 dead transitions. [2023-01-28 02:35:24,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 637 transitions, 15115 flow [2023-01-28 02:35:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:35:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:35:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1422 transitions. [2023-01-28 02:35:24,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36801242236024845 [2023-01-28 02:35:24,578 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1422 transitions. [2023-01-28 02:35:24,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1422 transitions. [2023-01-28 02:35:24,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:24,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1422 transitions. [2023-01-28 02:35:24,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:24,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:24,581 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:24,581 INFO L175 Difference]: Start difference. First operand has 264 places, 563 transitions, 12633 flow. Second operand 8 states and 1422 transitions. [2023-01-28 02:35:24,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 637 transitions, 15115 flow [2023-01-28 02:35:26,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 637 transitions, 15016 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:35:26,870 INFO L231 Difference]: Finished difference. Result has 269 places, 565 transitions, 13146 flow [2023-01-28 02:35:26,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12538, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13146, PETRI_PLACES=269, PETRI_TRANSITIONS=565} [2023-01-28 02:35:26,874 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 244 predicate places. [2023-01-28 02:35:26,874 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 565 transitions, 13146 flow [2023-01-28 02:35:26,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 173.6) internal successors, (2604), 15 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:26,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:26,875 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] [2023-01-28 02:35:26,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-01-28 02:35:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-01-28 02:35:27,077 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:27,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2119395894, now seen corresponding path program 5 times [2023-01-28 02:35:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301646456] [2023-01-28 02:35:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301646456] [2023-01-28 02:35:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301646456] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:27,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:27,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:35:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7666341] [2023-01-28 02:35:27,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:27,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:35:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:35:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:35:27,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 483 [2023-01-28 02:35:27,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 565 transitions, 13146 flow. Second operand has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:27,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:27,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 483 [2023-01-28 02:35:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:29,893 INFO L130 PetriNetUnfolder]: 5300/10232 cut-off events. [2023-01-28 02:35:29,893 INFO L131 PetriNetUnfolder]: For 301905/301905 co-relation queries the response was YES. [2023-01-28 02:35:29,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93275 conditions, 10232 events. 5300/10232 cut-off events. For 301905/301905 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 84959 event pairs, 1560 based on Foata normal form. 20/10252 useless extension candidates. Maximal degree in co-relation 93182. Up to 6994 conditions per place. [2023-01-28 02:35:30,002 INFO L137 encePairwiseOnDemand]: 476/483 looper letters, 316 selfloop transitions, 275 changer transitions 6/597 dead transitions. [2023-01-28 02:35:30,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 597 transitions, 14863 flow [2023-01-28 02:35:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:35:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:35:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1252 transitions. [2023-01-28 02:35:30,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37030464359656906 [2023-01-28 02:35:30,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1252 transitions. [2023-01-28 02:35:30,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1252 transitions. [2023-01-28 02:35:30,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:30,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1252 transitions. [2023-01-28 02:35:30,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:30,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:30,006 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:30,006 INFO L175 Difference]: Start difference. First operand has 269 places, 565 transitions, 13146 flow. Second operand 7 states and 1252 transitions. [2023-01-28 02:35:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 597 transitions, 14863 flow [2023-01-28 02:35:32,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 597 transitions, 14229 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 02:35:32,089 INFO L231 Difference]: Finished difference. Result has 271 places, 566 transitions, 13146 flow [2023-01-28 02:35:32,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12475, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13146, PETRI_PLACES=271, PETRI_TRANSITIONS=566} [2023-01-28 02:35:32,089 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 246 predicate places. [2023-01-28 02:35:32,090 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 566 transitions, 13146 flow [2023-01-28 02:35:32,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:32,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:32,090 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] [2023-01-28 02:35:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-28 02:35:32,090 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:32,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1912599798, now seen corresponding path program 6 times [2023-01-28 02:35:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720918018] [2023-01-28 02:35:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720918018] [2023-01-28 02:35:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720918018] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:32,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:32,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:35:32,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837881107] [2023-01-28 02:35:32,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:35:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:35:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:35:32,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 483 [2023-01-28 02:35:32,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 566 transitions, 13146 flow. Second operand has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:32,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:32,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 483 [2023-01-28 02:35:32,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:34,596 INFO L130 PetriNetUnfolder]: 5087/9813 cut-off events. [2023-01-28 02:35:34,596 INFO L131 PetriNetUnfolder]: For 282542/282542 co-relation queries the response was YES. [2023-01-28 02:35:34,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89527 conditions, 9813 events. 5087/9813 cut-off events. For 282542/282542 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 80709 event pairs, 1558 based on Foata normal form. 36/9849 useless extension candidates. Maximal degree in co-relation 89434. Up to 7080 conditions per place. [2023-01-28 02:35:34,714 INFO L137 encePairwiseOnDemand]: 476/483 looper letters, 276 selfloop transitions, 275 changer transitions 6/557 dead transitions. [2023-01-28 02:35:34,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 557 transitions, 13951 flow [2023-01-28 02:35:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:35:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:35:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1242 transitions. [2023-01-28 02:35:34,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2023-01-28 02:35:34,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1242 transitions. [2023-01-28 02:35:34,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1242 transitions. [2023-01-28 02:35:34,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:34,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1242 transitions. [2023-01-28 02:35:34,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.42857142857142) internal successors, (1242), 7 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:34,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:34,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 483.0) internal successors, (3864), 8 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:34,718 INFO L175 Difference]: Start difference. First operand has 271 places, 566 transitions, 13146 flow. Second operand 7 states and 1242 transitions. [2023-01-28 02:35:34,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 557 transitions, 13951 flow [2023-01-28 02:35:36,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 557 transitions, 13603 flow, removed 34 selfloop flow, removed 11 redundant places. [2023-01-28 02:35:36,694 INFO L231 Difference]: Finished difference. Result has 259 places, 538 transitions, 12816 flow [2023-01-28 02:35:36,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12371, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12816, PETRI_PLACES=259, PETRI_TRANSITIONS=538} [2023-01-28 02:35:36,694 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 234 predicate places. [2023-01-28 02:35:36,694 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 538 transitions, 12816 flow [2023-01-28 02:35:36,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.33333333333334) internal successors, (1560), 9 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:36,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:36,695 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] [2023-01-28 02:35:36,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-28 02:35:36,695 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:36,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 496765336, now seen corresponding path program 7 times [2023-01-28 02:35:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:36,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816742714] [2023-01-28 02:35:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:36,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:36,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816742714] [2023-01-28 02:35:36,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816742714] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:36,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:36,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:35:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875450524] [2023-01-28 02:35:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:35:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:35:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:35:36,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 483 [2023-01-28 02:35:36,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 538 transitions, 12816 flow. Second operand has 10 states, 10 states have (on average 169.1) internal successors, (1691), 10 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:36,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:36,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 483 [2023-01-28 02:35:36,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:39,171 INFO L130 PetriNetUnfolder]: 4998/9642 cut-off events. [2023-01-28 02:35:39,171 INFO L131 PetriNetUnfolder]: For 257939/257939 co-relation queries the response was YES. [2023-01-28 02:35:39,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87129 conditions, 9642 events. 4998/9642 cut-off events. For 257939/257939 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 79202 event pairs, 1860 based on Foata normal form. 20/9662 useless extension candidates. Maximal degree in co-relation 87043. Up to 8070 conditions per place. [2023-01-28 02:35:39,276 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 471 selfloop transitions, 84 changer transitions 2/557 dead transitions. [2023-01-28 02:35:39,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 557 transitions, 14160 flow [2023-01-28 02:35:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:35:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:35:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1390 transitions. [2023-01-28 02:35:39,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35973084886128365 [2023-01-28 02:35:39,284 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1390 transitions. [2023-01-28 02:35:39,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1390 transitions. [2023-01-28 02:35:39,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:39,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1390 transitions. [2023-01-28 02:35:39,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.75) internal successors, (1390), 8 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:39,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:39,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:39,287 INFO L175 Difference]: Start difference. First operand has 259 places, 538 transitions, 12816 flow. Second operand 8 states and 1390 transitions. [2023-01-28 02:35:39,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 557 transitions, 14160 flow [2023-01-28 02:35:41,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 557 transitions, 13534 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 02:35:41,163 INFO L231 Difference]: Finished difference. Result has 258 places, 535 transitions, 12323 flow [2023-01-28 02:35:41,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12151, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12323, PETRI_PLACES=258, PETRI_TRANSITIONS=535} [2023-01-28 02:35:41,164 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 233 predicate places. [2023-01-28 02:35:41,164 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 535 transitions, 12323 flow [2023-01-28 02:35:41,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.1) internal successors, (1691), 10 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:41,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:41,164 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] [2023-01-28 02:35:41,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-28 02:35:41,165 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:41,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1130417944, now seen corresponding path program 8 times [2023-01-28 02:35:41,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:41,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878174096] [2023-01-28 02:35:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:41,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878174096] [2023-01-28 02:35:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878174096] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:35:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024792221] [2023-01-28 02:35:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:41,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:35:41,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:35:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:35:41,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 483 [2023-01-28 02:35:41,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 535 transitions, 12323 flow. Second operand has 11 states, 11 states have (on average 168.9090909090909) internal successors, (1858), 11 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:41,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:41,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 483 [2023-01-28 02:35:41,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:43,988 INFO L130 PetriNetUnfolder]: 5058/9807 cut-off events. [2023-01-28 02:35:43,988 INFO L131 PetriNetUnfolder]: For 247148/247148 co-relation queries the response was YES. [2023-01-28 02:35:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87256 conditions, 9807 events. 5058/9807 cut-off events. For 247148/247148 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 81261 event pairs, 1827 based on Foata normal form. 30/9837 useless extension candidates. Maximal degree in co-relation 87170. Up to 8070 conditions per place. [2023-01-28 02:35:44,097 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 506 selfloop transitions, 59 changer transitions 19/584 dead transitions. [2023-01-28 02:35:44,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 584 transitions, 14154 flow [2023-01-28 02:35:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:35:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:35:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1737 transitions. [2023-01-28 02:35:44,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3596273291925466 [2023-01-28 02:35:44,099 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1737 transitions. [2023-01-28 02:35:44,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1737 transitions. [2023-01-28 02:35:44,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:44,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1737 transitions. [2023-01-28 02:35:44,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.7) internal successors, (1737), 10 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:44,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:44,102 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:44,102 INFO L175 Difference]: Start difference. First operand has 258 places, 535 transitions, 12323 flow. Second operand 10 states and 1737 transitions. [2023-01-28 02:35:44,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 584 transitions, 14154 flow [2023-01-28 02:35:45,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 584 transitions, 14038 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-01-28 02:35:45,967 INFO L231 Difference]: Finished difference. Result has 261 places, 526 transitions, 12123 flow [2023-01-28 02:35:45,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=12207, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12123, PETRI_PLACES=261, PETRI_TRANSITIONS=526} [2023-01-28 02:35:45,967 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 236 predicate places. [2023-01-28 02:35:45,967 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 526 transitions, 12123 flow [2023-01-28 02:35:45,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 168.9090909090909) internal successors, (1858), 11 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:45,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:45,968 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] [2023-01-28 02:35:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-01-28 02:35:45,968 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:45,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1778753870, now seen corresponding path program 9 times [2023-01-28 02:35:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184607991] [2023-01-28 02:35:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:46,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184607991] [2023-01-28 02:35:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184607991] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:35:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549704870] [2023-01-28 02:35:46,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:35:46,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:46,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:35:46,177 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:35:46,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-28 02:35:46,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:35:46,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:35:46,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 02:35:46,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:35:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:46,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:35:46,554 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:35:46,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 56 [2023-01-28 02:35:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:46,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549704870] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:35:46,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:35:46,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 14 [2023-01-28 02:35:46,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735698830] [2023-01-28 02:35:46,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:35:46,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:35:46,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:46,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:35:46,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:35:46,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 483 [2023-01-28 02:35:46,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 526 transitions, 12123 flow. Second operand has 14 states, 14 states have (on average 173.71428571428572) internal successors, (2432), 14 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:46,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:46,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 483 [2023-01-28 02:35:46,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:48,828 INFO L130 PetriNetUnfolder]: 4903/9459 cut-off events. [2023-01-28 02:35:48,829 INFO L131 PetriNetUnfolder]: For 243593/243593 co-relation queries the response was YES. [2023-01-28 02:35:48,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84275 conditions, 9459 events. 4903/9459 cut-off events. For 243593/243593 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 77536 event pairs, 1806 based on Foata normal form. 20/9479 useless extension candidates. Maximal degree in co-relation 84189. Up to 8073 conditions per place. [2023-01-28 02:35:48,942 INFO L137 encePairwiseOnDemand]: 475/483 looper letters, 448 selfloop transitions, 87 changer transitions 5/540 dead transitions. [2023-01-28 02:35:48,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 540 transitions, 13299 flow [2023-01-28 02:35:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:35:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:35:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1429 transitions. [2023-01-28 02:35:48,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369824016563147 [2023-01-28 02:35:48,944 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1429 transitions. [2023-01-28 02:35:48,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1429 transitions. [2023-01-28 02:35:48,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:48,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1429 transitions. [2023-01-28 02:35:48,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.625) internal successors, (1429), 8 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:48,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:48,948 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 483.0) internal successors, (4347), 9 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:48,948 INFO L175 Difference]: Start difference. First operand has 261 places, 526 transitions, 12123 flow. Second operand 8 states and 1429 transitions. [2023-01-28 02:35:48,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 540 transitions, 13299 flow [2023-01-28 02:35:50,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 540 transitions, 13083 flow, removed 19 selfloop flow, removed 14 redundant places. [2023-01-28 02:35:50,802 INFO L231 Difference]: Finished difference. Result has 254 places, 518 transitions, 12006 flow [2023-01-28 02:35:50,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11783, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12006, PETRI_PLACES=254, PETRI_TRANSITIONS=518} [2023-01-28 02:35:50,802 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 229 predicate places. [2023-01-28 02:35:50,802 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 518 transitions, 12006 flow [2023-01-28 02:35:50,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 173.71428571428572) internal successors, (2432), 14 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:50,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:50,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:35:50,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-01-28 02:35:51,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-01-28 02:35:51,007 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:51,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2109707449, now seen corresponding path program 2 times [2023-01-28 02:35:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100423494] [2023-01-28 02:35:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:35:51,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100423494] [2023-01-28 02:35:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100423494] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:35:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667547379] [2023-01-28 02:35:51,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:35:51,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:51,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:35:51,158 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:35:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-28 02:35:51,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:35:51,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:35:51,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 02:35:51,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:35:51,562 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:35:51,562 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 160 treesize of output 141 [2023-01-28 02:35:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:35:51,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:35:51,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:35:51,887 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 185 treesize of output 165 [2023-01-28 02:35:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:35:52,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667547379] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:35:52,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:35:52,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-01-28 02:35:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450362572] [2023-01-28 02:35:52,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:35:52,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:35:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:35:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:35:52,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 483 [2023-01-28 02:35:52,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 518 transitions, 12006 flow. Second operand has 27 states, 27 states have (on average 158.0) internal successors, (4266), 27 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:52,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:52,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 483 [2023-01-28 02:35:52,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:56,212 INFO L130 PetriNetUnfolder]: 5270/10157 cut-off events. [2023-01-28 02:35:56,212 INFO L131 PetriNetUnfolder]: For 266895/266895 co-relation queries the response was YES. [2023-01-28 02:35:56,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90161 conditions, 10157 events. 5270/10157 cut-off events. For 266895/266895 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 84445 event pairs, 951 based on Foata normal form. 160/10317 useless extension candidates. Maximal degree in co-relation 90078. Up to 3198 conditions per place. [2023-01-28 02:35:56,309 INFO L137 encePairwiseOnDemand]: 468/483 looper letters, 647 selfloop transitions, 625 changer transitions 69/1341 dead transitions. [2023-01-28 02:35:56,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1341 transitions, 31087 flow [2023-01-28 02:35:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-01-28 02:35:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-01-28 02:35:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7310 transitions. [2023-01-28 02:35:56,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3363239015412928 [2023-01-28 02:35:56,313 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7310 transitions. [2023-01-28 02:35:56,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7310 transitions. [2023-01-28 02:35:56,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:56,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7310 transitions. [2023-01-28 02:35:56,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 162.44444444444446) internal successors, (7310), 45 states have internal predecessors, (7310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:56,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 483.0) internal successors, (22218), 46 states have internal predecessors, (22218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:56,327 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 483.0) internal successors, (22218), 46 states have internal predecessors, (22218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:56,327 INFO L175 Difference]: Start difference. First operand has 254 places, 518 transitions, 12006 flow. Second operand 45 states and 7310 transitions. [2023-01-28 02:35:56,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1341 transitions, 31087 flow [2023-01-28 02:35:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1341 transitions, 30709 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-01-28 02:35:58,221 INFO L231 Difference]: Finished difference. Result has 311 places, 881 transitions, 22917 flow [2023-01-28 02:35:58,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11814, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=22917, PETRI_PLACES=311, PETRI_TRANSITIONS=881} [2023-01-28 02:35:58,221 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 286 predicate places. [2023-01-28 02:35:58,222 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 881 transitions, 22917 flow [2023-01-28 02:35:58,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 158.0) internal successors, (4266), 27 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:58,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:58,222 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] [2023-01-28 02:35:58,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-01-28 02:35:58,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:58,427 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:35:58,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1768613792, now seen corresponding path program 10 times [2023-01-28 02:35:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953199022] [2023-01-28 02:35:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:35:58,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953199022] [2023-01-28 02:35:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953199022] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:35:58,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:35:58,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:35:58,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005505067] [2023-01-28 02:35:58,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:35:58,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:35:58,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:35:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:35:58,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 483 [2023-01-28 02:35:58,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 881 transitions, 22917 flow. Second operand has 11 states, 11 states have (on average 162.9090909090909) internal successors, (1792), 11 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:58,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:58,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 483 [2023-01-28 02:35:58,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:01,906 INFO L130 PetriNetUnfolder]: 4977/9639 cut-off events. [2023-01-28 02:36:01,907 INFO L131 PetriNetUnfolder]: For 294540/294540 co-relation queries the response was YES. [2023-01-28 02:36:01,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93729 conditions, 9639 events. 4977/9639 cut-off events. For 294540/294540 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 79902 event pairs, 1792 based on Foata normal form. 30/9669 useless extension candidates. Maximal degree in co-relation 93626. Up to 8431 conditions per place. [2023-01-28 02:36:02,025 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 768 selfloop transitions, 126 changer transitions 20/914 dead transitions. [2023-01-28 02:36:02,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 914 transitions, 25166 flow [2023-01-28 02:36:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:36:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:36:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1670 transitions. [2023-01-28 02:36:02,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34575569358178054 [2023-01-28 02:36:02,027 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1670 transitions. [2023-01-28 02:36:02,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1670 transitions. [2023-01-28 02:36:02,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:02,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1670 transitions. [2023-01-28 02:36:02,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:02,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:02,030 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 483.0) internal successors, (5313), 11 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:02,030 INFO L175 Difference]: Start difference. First operand has 311 places, 881 transitions, 22917 flow. Second operand 10 states and 1670 transitions. [2023-01-28 02:36:02,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 914 transitions, 25166 flow [2023-01-28 02:36:04,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 914 transitions, 24267 flow, removed 436 selfloop flow, removed 10 redundant places. [2023-01-28 02:36:05,159 INFO L231 Difference]: Finished difference. Result has 307 places, 874 transitions, 22163 flow [2023-01-28 02:36:05,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=22063, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22163, PETRI_PLACES=307, PETRI_TRANSITIONS=874} [2023-01-28 02:36:05,160 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 282 predicate places. [2023-01-28 02:36:05,160 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 874 transitions, 22163 flow [2023-01-28 02:36:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 162.9090909090909) internal successors, (1792), 11 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:05,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:05,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:05,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-01-28 02:36:05,160 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:05,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2075885073, now seen corresponding path program 3 times [2023-01-28 02:36:05,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:05,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704274921] [2023-01-28 02:36:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:05,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:05,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:05,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704274921] [2023-01-28 02:36:05,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704274921] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:05,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786404166] [2023-01-28 02:36:05,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:36:05,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:05,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:05,331 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:05,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-28 02:36:05,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:36:05,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:05,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 02:36:05,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:05,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:05,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:36:05,795 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 185 treesize of output 165 [2023-01-28 02:36:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:06,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786404166] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:06,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:06,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-01-28 02:36:06,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130849799] [2023-01-28 02:36:06,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:06,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 02:36:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 02:36:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2023-01-28 02:36:06,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:36:06,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 874 transitions, 22163 flow. Second operand has 29 states, 29 states have (on average 164.86206896551724) internal successors, (4781), 29 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:06,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:06,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:36:06,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:09,653 INFO L130 PetriNetUnfolder]: 5062/9802 cut-off events. [2023-01-28 02:36:09,653 INFO L131 PetriNetUnfolder]: For 288953/288953 co-relation queries the response was YES. [2023-01-28 02:36:09,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93164 conditions, 9802 events. 5062/9802 cut-off events. For 288953/288953 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 81199 event pairs, 1842 based on Foata normal form. 90/9892 useless extension candidates. Maximal degree in co-relation 93063. Up to 5613 conditions per place. [2023-01-28 02:36:09,789 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 1049 selfloop transitions, 139 changer transitions 20/1208 dead transitions. [2023-01-28 02:36:09,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1208 transitions, 30091 flow [2023-01-28 02:36:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 02:36:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 02:36:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2023-01-28 02:36:09,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35520186335403725 [2023-01-28 02:36:09,791 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2023-01-28 02:36:09,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2023-01-28 02:36:09,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:09,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2023-01-28 02:36:09,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:09,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 483.0) internal successors, (8211), 17 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:09,796 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 483.0) internal successors, (8211), 17 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:09,796 INFO L175 Difference]: Start difference. First operand has 307 places, 874 transitions, 22163 flow. Second operand 16 states and 2745 transitions. [2023-01-28 02:36:09,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1208 transitions, 30091 flow [2023-01-28 02:36:12,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1208 transitions, 29225 flow, removed 40 selfloop flow, removed 17 redundant places. [2023-01-28 02:36:12,618 INFO L231 Difference]: Finished difference. Result has 307 places, 912 transitions, 22815 flow [2023-01-28 02:36:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=21377, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=22815, PETRI_PLACES=307, PETRI_TRANSITIONS=912} [2023-01-28 02:36:12,619 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 282 predicate places. [2023-01-28 02:36:12,619 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 912 transitions, 22815 flow [2023-01-28 02:36:12,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 164.86206896551724) internal successors, (4781), 29 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:12,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:12,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:12,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-01-28 02:36:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:12,821 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:12,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1698496599, now seen corresponding path program 4 times [2023-01-28 02:36:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96903206] [2023-01-28 02:36:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:12,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96903206] [2023-01-28 02:36:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96903206] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056693726] [2023-01-28 02:36:13,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:36:13,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:13,030 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:13,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-28 02:36:13,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:36:13,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:13,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 02:36:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:13,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:13,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:36:13,493 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 185 treesize of output 165 [2023-01-28 02:36:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056693726] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:13,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:13,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-28 02:36:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975151864] [2023-01-28 02:36:13,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:13,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 02:36:13,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 02:36:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2023-01-28 02:36:13,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:36:13,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 912 transitions, 22815 flow. Second operand has 25 states, 25 states have (on average 164.96) internal successors, (4124), 25 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:13,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:13,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:36:13,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:16,935 INFO L130 PetriNetUnfolder]: 4886/9586 cut-off events. [2023-01-28 02:36:16,935 INFO L131 PetriNetUnfolder]: For 293193/293193 co-relation queries the response was YES. [2023-01-28 02:36:17,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91921 conditions, 9586 events. 4886/9586 cut-off events. For 293193/293193 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 80486 event pairs, 1488 based on Foata normal form. 144/9730 useless extension candidates. Maximal degree in co-relation 91821. Up to 4124 conditions per place. [2023-01-28 02:36:17,056 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 1046 selfloop transitions, 132 changer transitions 19/1197 dead transitions. [2023-01-28 02:36:17,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1197 transitions, 30019 flow [2023-01-28 02:36:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:36:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:36:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2067 transitions. [2023-01-28 02:36:17,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35662525879917184 [2023-01-28 02:36:17,058 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2067 transitions. [2023-01-28 02:36:17,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2067 transitions. [2023-01-28 02:36:17,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:17,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2067 transitions. [2023-01-28 02:36:17,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 172.25) internal successors, (2067), 12 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:17,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 483.0) internal successors, (6279), 13 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:17,062 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 483.0) internal successors, (6279), 13 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:17,062 INFO L175 Difference]: Start difference. First operand has 307 places, 912 transitions, 22815 flow. Second operand 12 states and 2067 transitions. [2023-01-28 02:36:17,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1197 transitions, 30019 flow [2023-01-28 02:36:20,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1197 transitions, 29818 flow, removed 91 selfloop flow, removed 7 redundant places. [2023-01-28 02:36:20,254 INFO L231 Difference]: Finished difference. Result has 316 places, 938 transitions, 23782 flow [2023-01-28 02:36:20,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=22584, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23782, PETRI_PLACES=316, PETRI_TRANSITIONS=938} [2023-01-28 02:36:20,255 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 291 predicate places. [2023-01-28 02:36:20,255 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 938 transitions, 23782 flow [2023-01-28 02:36:20,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 164.96) internal successors, (4124), 25 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:20,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:20,255 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:20,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-01-28 02:36:20,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-01-28 02:36:20,460 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:20,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash 950430547, now seen corresponding path program 5 times [2023-01-28 02:36:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:20,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17454912] [2023-01-28 02:36:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:20,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:20,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17454912] [2023-01-28 02:36:20,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17454912] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:20,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924272061] [2023-01-28 02:36:20,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:36:20,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:20,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:20,635 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:20,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-28 02:36:20,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:36:20,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:20,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 02:36:20,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:20,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:21,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:36:21,100 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 185 treesize of output 165 [2023-01-28 02:36:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:21,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924272061] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:21,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:21,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-01-28 02:36:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210044831] [2023-01-28 02:36:21,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:21,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 02:36:21,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 02:36:21,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2023-01-28 02:36:21,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 483 [2023-01-28 02:36:21,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 938 transitions, 23782 flow. Second operand has 26 states, 26 states have (on average 164.69230769230768) internal successors, (4282), 26 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:21,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:21,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 483 [2023-01-28 02:36:21,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:24,848 INFO L130 PetriNetUnfolder]: 4729/9325 cut-off events. [2023-01-28 02:36:24,848 INFO L131 PetriNetUnfolder]: For 290224/290224 co-relation queries the response was YES. [2023-01-28 02:36:24,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90586 conditions, 9325 events. 4729/9325 cut-off events. For 290224/290224 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 78230 event pairs, 1757 based on Foata normal form. 62/9387 useless extension candidates. Maximal degree in co-relation 90482. Up to 5425 conditions per place. [2023-01-28 02:36:24,955 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 982 selfloop transitions, 132 changer transitions 17/1131 dead transitions. [2023-01-28 02:36:24,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 1131 transitions, 28912 flow [2023-01-28 02:36:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:36:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:36:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2393 transitions. [2023-01-28 02:36:24,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3538893818396924 [2023-01-28 02:36:24,957 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2393 transitions. [2023-01-28 02:36:24,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2393 transitions. [2023-01-28 02:36:24,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:24,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2393 transitions. [2023-01-28 02:36:24,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 170.92857142857142) internal successors, (2393), 14 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:24,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 483.0) internal successors, (7245), 15 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:24,962 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 483.0) internal successors, (7245), 15 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:24,962 INFO L175 Difference]: Start difference. First operand has 316 places, 938 transitions, 23782 flow. Second operand 14 states and 2393 transitions. [2023-01-28 02:36:24,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 1131 transitions, 28912 flow [2023-01-28 02:36:28,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1131 transitions, 28789 flow, removed 55 selfloop flow, removed 6 redundant places. [2023-01-28 02:36:28,100 INFO L231 Difference]: Finished difference. Result has 324 places, 934 transitions, 23993 flow [2023-01-28 02:36:28,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=23620, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=23993, PETRI_PLACES=324, PETRI_TRANSITIONS=934} [2023-01-28 02:36:28,101 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 299 predicate places. [2023-01-28 02:36:28,101 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 934 transitions, 23993 flow [2023-01-28 02:36:28,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 164.69230769230768) internal successors, (4282), 26 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:28,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:28,101 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] [2023-01-28 02:36:28,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-01-28 02:36:28,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:28,306 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:28,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1122305270, now seen corresponding path program 11 times [2023-01-28 02:36:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257188563] [2023-01-28 02:36:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:36:28,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257188563] [2023-01-28 02:36:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257188563] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:36:28,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:36:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:36:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419035994] [2023-01-28 02:36:28,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:36:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 02:36:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 02:36:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-28 02:36:28,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 483 [2023-01-28 02:36:28,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 934 transitions, 23993 flow. Second operand has 11 states, 11 states have (on average 168.9090909090909) internal successors, (1858), 11 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:28,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:28,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 483 [2023-01-28 02:36:28,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:31,656 INFO L130 PetriNetUnfolder]: 4650/9161 cut-off events. [2023-01-28 02:36:31,656 INFO L131 PetriNetUnfolder]: For 281924/281924 co-relation queries the response was YES. [2023-01-28 02:36:31,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88553 conditions, 9161 events. 4650/9161 cut-off events. For 281924/281924 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 76691 event pairs, 1779 based on Foata normal form. 30/9191 useless extension candidates. Maximal degree in co-relation 88448. Up to 8294 conditions per place. [2023-01-28 02:36:31,787 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 771 selfloop transitions, 157 changer transitions 11/939 dead transitions. [2023-01-28 02:36:31,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 939 transitions, 25784 flow [2023-01-28 02:36:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:36:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:36:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1551 transitions. [2023-01-28 02:36:31,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35679779158040026 [2023-01-28 02:36:31,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1551 transitions. [2023-01-28 02:36:31,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1551 transitions. [2023-01-28 02:36:31,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:31,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1551 transitions. [2023-01-28 02:36:31,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.33333333333334) internal successors, (1551), 9 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:31,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 483.0) internal successors, (4830), 10 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:31,791 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 483.0) internal successors, (4830), 10 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:31,791 INFO L175 Difference]: Start difference. First operand has 324 places, 934 transitions, 23993 flow. Second operand 9 states and 1551 transitions. [2023-01-28 02:36:31,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 939 transitions, 25784 flow [2023-01-28 02:36:34,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 939 transitions, 25747 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-28 02:36:34,855 INFO L231 Difference]: Finished difference. Result has 324 places, 912 transitions, 23837 flow [2023-01-28 02:36:34,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=23634, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23837, PETRI_PLACES=324, PETRI_TRANSITIONS=912} [2023-01-28 02:36:34,855 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 299 predicate places. [2023-01-28 02:36:34,856 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 912 transitions, 23837 flow [2023-01-28 02:36:34,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 168.9090909090909) internal successors, (1858), 11 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:34,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:34,856 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-28 02:36:34,856 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:34,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash -858824887, now seen corresponding path program 6 times [2023-01-28 02:36:34,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:34,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514731750] [2023-01-28 02:36:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:35,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514731750] [2023-01-28 02:36:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514731750] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221856974] [2023-01-28 02:36:35,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:36:35,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:35,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:35,023 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:35,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-28 02:36:35,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 02:36:35,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:35,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 02:36:35,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:35,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:36:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221856974] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:35,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:35,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-01-28 02:36:35,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717697538] [2023-01-28 02:36:35,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:35,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 02:36:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 02:36:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-01-28 02:36:35,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 483 [2023-01-28 02:36:35,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 912 transitions, 23837 flow. Second operand has 22 states, 22 states have (on average 171.86363636363637) internal successors, (3781), 22 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:35,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:35,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 483 [2023-01-28 02:36:35,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:38,741 INFO L130 PetriNetUnfolder]: 4617/9057 cut-off events. [2023-01-28 02:36:38,741 INFO L131 PetriNetUnfolder]: For 284913/284913 co-relation queries the response was YES. [2023-01-28 02:36:38,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88462 conditions, 9057 events. 4617/9057 cut-off events. For 284913/284913 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 74981 event pairs, 935 based on Foata normal form. 13/9070 useless extension candidates. Maximal degree in co-relation 88357. Up to 3298 conditions per place. [2023-01-28 02:36:38,879 INFO L137 encePairwiseOnDemand]: 474/483 looper letters, 904 selfloop transitions, 192 changer transitions 14/1110 dead transitions. [2023-01-28 02:36:38,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1110 transitions, 29337 flow [2023-01-28 02:36:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:36:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:36:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2499 transitions. [2023-01-28 02:36:38,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2023-01-28 02:36:38,881 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2499 transitions. [2023-01-28 02:36:38,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2499 transitions. [2023-01-28 02:36:38,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:38,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2499 transitions. [2023-01-28 02:36:38,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 178.5) internal successors, (2499), 14 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:38,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 483.0) internal successors, (7245), 15 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:38,886 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 483.0) internal successors, (7245), 15 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:38,886 INFO L175 Difference]: Start difference. First operand has 324 places, 912 transitions, 23837 flow. Second operand 14 states and 2499 transitions. [2023-01-28 02:36:38,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1110 transitions, 29337 flow [2023-01-28 02:36:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 1110 transitions, 28782 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-01-28 02:36:41,599 INFO L231 Difference]: Finished difference. Result has 317 places, 913 transitions, 23823 flow [2023-01-28 02:36:41,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=23301, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=909, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=23823, PETRI_PLACES=317, PETRI_TRANSITIONS=913} [2023-01-28 02:36:41,600 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 292 predicate places. [2023-01-28 02:36:41,600 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 913 transitions, 23823 flow [2023-01-28 02:36:41,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 171.86363636363637) internal successors, (3781), 22 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:41,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:41,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:41,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-01-28 02:36:41,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-01-28 02:36:41,806 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:41,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -921077659, now seen corresponding path program 1 times [2023-01-28 02:36:41,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703081017] [2023-01-28 02:36:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:36:41,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703081017] [2023-01-28 02:36:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703081017] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712273603] [2023-01-28 02:36:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:41,875 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:41,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-28 02:36:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:42,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 02:36:42,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:36:42,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:36:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712273603] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:42,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-01-28 02:36:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623368492] [2023-01-28 02:36:42,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:42,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:36:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:36:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-01-28 02:36:42,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 483 [2023-01-28 02:36:42,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 913 transitions, 23823 flow. Second operand has 16 states, 16 states have (on average 173.1875) internal successors, (2771), 16 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:42,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:42,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 483 [2023-01-28 02:36:42,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:43,584 INFO L130 PetriNetUnfolder]: 1707/3387 cut-off events. [2023-01-28 02:36:43,584 INFO L131 PetriNetUnfolder]: For 122695/122695 co-relation queries the response was YES. [2023-01-28 02:36:43,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35548 conditions, 3387 events. 1707/3387 cut-off events. For 122695/122695 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 23374 event pairs, 502 based on Foata normal form. 126/3513 useless extension candidates. Maximal degree in co-relation 35443. Up to 1911 conditions per place. [2023-01-28 02:36:43,621 INFO L137 encePairwiseOnDemand]: 475/483 looper letters, 317 selfloop transitions, 6 changer transitions 261/584 dead transitions. [2023-01-28 02:36:43,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 584 transitions, 15219 flow [2023-01-28 02:36:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 02:36:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 02:36:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3005 transitions. [2023-01-28 02:36:43,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3659724759469005 [2023-01-28 02:36:43,623 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3005 transitions. [2023-01-28 02:36:43,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3005 transitions. [2023-01-28 02:36:43,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:43,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3005 transitions. [2023-01-28 02:36:43,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 176.76470588235293) internal successors, (3005), 17 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:43,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 483.0) internal successors, (8694), 18 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:43,629 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 483.0) internal successors, (8694), 18 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:43,629 INFO L175 Difference]: Start difference. First operand has 317 places, 913 transitions, 23823 flow. Second operand 17 states and 3005 transitions. [2023-01-28 02:36:43,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 584 transitions, 15219 flow [2023-01-28 02:36:44,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 584 transitions, 14462 flow, removed 77 selfloop flow, removed 21 redundant places. [2023-01-28 02:36:44,302 INFO L231 Difference]: Finished difference. Result has 310 places, 323 transitions, 6985 flow [2023-01-28 02:36:44,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11784, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6985, PETRI_PLACES=310, PETRI_TRANSITIONS=323} [2023-01-28 02:36:44,303 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 285 predicate places. [2023-01-28 02:36:44,303 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 323 transitions, 6985 flow [2023-01-28 02:36:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 173.1875) internal successors, (2771), 16 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:44,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:44,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:44,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-01-28 02:36:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:44,508 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:44,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1369840006, now seen corresponding path program 7 times [2023-01-28 02:36:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771484347] [2023-01-28 02:36:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:45,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:45,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771484347] [2023-01-28 02:36:45,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771484347] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:45,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621132238] [2023-01-28 02:36:45,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:36:45,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:45,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:45,029 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:45,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-01-28 02:36:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:45,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:36:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:45,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:45,725 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:36:45,726 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 20 treesize of output 4 [2023-01-28 02:36:45,762 INFO L321 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2023-01-28 02:36:45,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 70 treesize of output 62 [2023-01-28 02:36:45,779 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:36:45,780 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 16 treesize of output 4 [2023-01-28 02:36:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621132238] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:45,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:45,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 39 [2023-01-28 02:36:45,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409618187] [2023-01-28 02:36:45,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:45,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 02:36:45,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 02:36:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1275, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 02:36:45,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:36:46,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 323 transitions, 6985 flow. Second operand has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:46,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:46,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:36:46,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:48,212 INFO L130 PetriNetUnfolder]: 2935/5183 cut-off events. [2023-01-28 02:36:48,212 INFO L131 PetriNetUnfolder]: For 161325/161325 co-relation queries the response was YES. [2023-01-28 02:36:48,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51123 conditions, 5183 events. 2935/5183 cut-off events. For 161325/161325 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34504 event pairs, 296 based on Foata normal form. 136/5319 useless extension candidates. Maximal degree in co-relation 51024. Up to 1637 conditions per place. [2023-01-28 02:36:48,277 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 652 selfloop transitions, 279 changer transitions 0/931 dead transitions. [2023-01-28 02:36:48,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 931 transitions, 20925 flow [2023-01-28 02:36:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 02:36:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 02:36:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3814 transitions. [2023-01-28 02:36:48,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3158592132505176 [2023-01-28 02:36:48,280 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3814 transitions. [2023-01-28 02:36:48,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3814 transitions. [2023-01-28 02:36:48,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:48,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3814 transitions. [2023-01-28 02:36:48,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 152.56) internal successors, (3814), 25 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:48,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 483.0) internal successors, (12558), 26 states have internal predecessors, (12558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:48,287 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 483.0) internal successors, (12558), 26 states have internal predecessors, (12558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:48,287 INFO L175 Difference]: Start difference. First operand has 310 places, 323 transitions, 6985 flow. Second operand 25 states and 3814 transitions. [2023-01-28 02:36:48,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 931 transitions, 20925 flow [2023-01-28 02:36:49,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 931 transitions, 19688 flow, removed 416 selfloop flow, removed 46 redundant places. [2023-01-28 02:36:49,070 INFO L231 Difference]: Finished difference. Result has 241 places, 501 transitions, 11468 flow [2023-01-28 02:36:49,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=6561, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11468, PETRI_PLACES=241, PETRI_TRANSITIONS=501} [2023-01-28 02:36:49,070 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 216 predicate places. [2023-01-28 02:36:49,071 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 501 transitions, 11468 flow [2023-01-28 02:36:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:49,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:49,071 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:49,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-01-28 02:36:49,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-01-28 02:36:49,276 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:49,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash 10466820, now seen corresponding path program 8 times [2023-01-28 02:36:49,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:49,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494592389] [2023-01-28 02:36:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:49,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:49,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:49,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494592389] [2023-01-28 02:36:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494592389] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235163021] [2023-01-28 02:36:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:36:49,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:49,805 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:49,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-01-28 02:36:49,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:36:49,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:49,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 02:36:49,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:50,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:50,680 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:36:50,680 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 20 treesize of output 4 [2023-01-28 02:36:50,717 INFO L321 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2023-01-28 02:36:50,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 70 treesize of output 62 [2023-01-28 02:36:50,740 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:36:50,740 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 16 treesize of output 4 [2023-01-28 02:36:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:50,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235163021] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:36:50,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:36:50,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 39 [2023-01-28 02:36:50,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447401972] [2023-01-28 02:36:50,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:36:50,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 02:36:50,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:36:50,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 02:36:50,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 02:36:50,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:36:50,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 501 transitions, 11468 flow. Second operand has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:50,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:36:50,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:36:50,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:36:54,089 INFO L130 PetriNetUnfolder]: 3063/5419 cut-off events. [2023-01-28 02:36:54,089 INFO L131 PetriNetUnfolder]: For 126918/126918 co-relation queries the response was YES. [2023-01-28 02:36:54,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50204 conditions, 5419 events. 3063/5419 cut-off events. For 126918/126918 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36548 event pairs, 457 based on Foata normal form. 52/5471 useless extension candidates. Maximal degree in co-relation 50126. Up to 1677 conditions per place. [2023-01-28 02:36:54,148 INFO L137 encePairwiseOnDemand]: 469/483 looper letters, 541 selfloop transitions, 397 changer transitions 0/938 dead transitions. [2023-01-28 02:36:54,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 938 transitions, 21845 flow [2023-01-28 02:36:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 02:36:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 02:36:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5263 transitions. [2023-01-28 02:36:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31132800946465544 [2023-01-28 02:36:54,151 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5263 transitions. [2023-01-28 02:36:54,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5263 transitions. [2023-01-28 02:36:54,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:36:54,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5263 transitions. [2023-01-28 02:36:54,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 150.37142857142857) internal successors, (5263), 35 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:54,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 483.0) internal successors, (17388), 36 states have internal predecessors, (17388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:54,161 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 483.0) internal successors, (17388), 36 states have internal predecessors, (17388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:54,161 INFO L175 Difference]: Start difference. First operand has 241 places, 501 transitions, 11468 flow. Second operand 35 states and 5263 transitions. [2023-01-28 02:36:54,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 938 transitions, 21845 flow [2023-01-28 02:36:54,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 938 transitions, 21685 flow, removed 72 selfloop flow, removed 6 redundant places. [2023-01-28 02:36:54,901 INFO L231 Difference]: Finished difference. Result has 282 places, 659 transitions, 15971 flow [2023-01-28 02:36:54,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=11376, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=15971, PETRI_PLACES=282, PETRI_TRANSITIONS=659} [2023-01-28 02:36:54,902 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 257 predicate places. [2023-01-28 02:36:54,902 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 659 transitions, 15971 flow [2023-01-28 02:36:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:54,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:54,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:54,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-01-28 02:36:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-01-28 02:36:55,108 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:36:55,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -779428774, now seen corresponding path program 9 times [2023-01-28 02:36:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740581674] [2023-01-28 02:36:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740581674] [2023-01-28 02:36:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740581674] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269727405] [2023-01-28 02:36:55,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:36:55,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:55,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:55,629 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:36:55,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-01-28 02:36:55,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 02:36:55,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:55,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 02:36:55,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:55,973 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 02:36:56,028 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:36:56,083 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:36:56,618 INFO L321 Elim1Store]: treesize reduction 24, result has 68.8 percent of original size [2023-01-28 02:36:56,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 146 treesize of output 154 [2023-01-28 02:36:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:36:56,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:57,757 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse6 (+ c_~a1~0.offset 4)) (.cse7 (+ 4 c_~a2~0.offset))) (let ((.cse0 (forall ((~a1~0.base Int) (v_ArrVal_2194 (Array Int Int))) (not (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2194))) (= (select (select .cse9 ~a1~0.base) .cse6) (select (select .cse9 c_~a2~0.base) .cse7))))))) (and (or (<= c_~n2~0 c_~n1~0) .cse0) (or (<= c_~n1~0 c_~n2~0) .cse0) (forall ((~a1~0.base Int) (v_ArrVal_2194 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2194))) (let ((.cse3 (select .cse8 ~a1~0.base)) (.cse5 (select .cse8 c_~a2~0.base))) (or (forall ((|v_thread2Thread1of1ForFork1_~i~1#1_148| Int)) (let ((.cse4 (* |v_thread2Thread1of1ForFork1_~i~1#1_148| 4))) (let ((.cse2 (select .cse5 (+ .cse4 c_~a2~0.offset))) (.cse1 (select .cse3 (+ .cse4 c_~a1~0.offset)))) (or (= .cse1 .cse2) (<= c_~n1~0 |v_thread2Thread1of1ForFork1_~i~1#1_148|) (< (+ 2147483647 .cse1) .cse2) (<= c_~n2~0 |v_thread2Thread1of1ForFork1_~i~1#1_148|) (< |v_thread2Thread1of1ForFork1_~i~1#1_148| 1) (< (+ 2147483648 .cse2) .cse1))))) (not (= (select .cse3 .cse6) (select .cse5 .cse7)))))))))) is different from false [2023-01-28 02:36:57,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:36:57,986 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 1 case distinctions, treesize of input 222 treesize of output 138 [2023-01-28 02:36:58,034 INFO L321 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2023-01-28 02:36:58,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1638 treesize of output 1442 [2023-01-28 02:36:58,059 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:36:58,061 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:36:58,086 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:36:58,087 INFO L350 Elim1Store]: Elim1 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 1398 treesize of output 1090 [2023-01-28 02:36:58,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:36:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:36:58,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:36:58,137 INFO L350 Elim1Store]: Elim1 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 1046 treesize of output 914 [2023-01-28 02:37:01,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,067 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 1 case distinctions, treesize of input 52 treesize of output 41 [2023-01-28 02:37:01,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,100 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 726 treesize of output 642 [2023-01-28 02:37:01,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,123 INFO L350 Elim1Store]: Elim1 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 310 treesize of output 255 [2023-01-28 02:37:01,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,138 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 223 [2023-01-28 02:37:01,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,278 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 1 case distinctions, treesize of input 52 treesize of output 41 [2023-01-28 02:37:01,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,291 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 726 treesize of output 642 [2023-01-28 02:37:01,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,315 INFO L350 Elim1Store]: Elim1 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 310 treesize of output 255 [2023-01-28 02:37:01,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:37:01,331 INFO L350 Elim1Store]: Elim1 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 246 treesize of output 223 [2023-01-28 02:37:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:37:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269727405] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:37:01,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:37:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 43 [2023-01-28 02:37:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008330987] [2023-01-28 02:37:01,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:37:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-01-28 02:37:01,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-01-28 02:37:01,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1599, Unknown=2, NotChecked=82, Total=1892 [2023-01-28 02:37:01,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 483 [2023-01-28 02:37:01,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 659 transitions, 15971 flow. Second operand has 44 states, 44 states have (on average 131.52272727272728) internal successors, (5787), 44 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:01,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:01,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 483 [2023-01-28 02:37:01,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:37:13,388 INFO L130 PetriNetUnfolder]: 5545/9772 cut-off events. [2023-01-28 02:37:13,388 INFO L131 PetriNetUnfolder]: For 276771/276771 co-relation queries the response was YES. [2023-01-28 02:37:13,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95920 conditions, 9772 events. 5545/9772 cut-off events. For 276771/276771 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 73025 event pairs, 576 based on Foata normal form. 161/9933 useless extension candidates. Maximal degree in co-relation 95829. Up to 2909 conditions per place. [2023-01-28 02:37:13,503 INFO L137 encePairwiseOnDemand]: 466/483 looper letters, 862 selfloop transitions, 734 changer transitions 76/1672 dead transitions. [2023-01-28 02:37:13,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1672 transitions, 40351 flow [2023-01-28 02:37:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-01-28 02:37:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-01-28 02:37:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 8933 transitions. [2023-01-28 02:37:13,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2802246063115628 [2023-01-28 02:37:13,509 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 8933 transitions. [2023-01-28 02:37:13,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 8933 transitions. [2023-01-28 02:37:13,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:37:13,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 8933 transitions. [2023-01-28 02:37:13,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 135.34848484848484) internal successors, (8933), 66 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:13,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 483.0) internal successors, (32361), 67 states have internal predecessors, (32361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:13,529 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 483.0) internal successors, (32361), 67 states have internal predecessors, (32361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:13,529 INFO L175 Difference]: Start difference. First operand has 282 places, 659 transitions, 15971 flow. Second operand 66 states and 8933 transitions. [2023-01-28 02:37:13,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1672 transitions, 40351 flow [2023-01-28 02:37:16,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1672 transitions, 39576 flow, removed 223 selfloop flow, removed 15 redundant places. [2023-01-28 02:37:16,198 INFO L231 Difference]: Finished difference. Result has 359 places, 1119 transitions, 28193 flow [2023-01-28 02:37:16,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=15461, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=28193, PETRI_PLACES=359, PETRI_TRANSITIONS=1119} [2023-01-28 02:37:16,198 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 334 predicate places. [2023-01-28 02:37:16,199 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1119 transitions, 28193 flow [2023-01-28 02:37:16,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 131.52272727272728) internal successors, (5787), 44 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:16,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:37:16,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:37:16,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-01-28 02:37:16,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:16,404 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:37:16,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:37:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash 875882456, now seen corresponding path program 10 times [2023-01-28 02:37:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:37:16,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834474494] [2023-01-28 02:37:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:37:16,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:37:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:37:16,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:37:16,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834474494] [2023-01-28 02:37:16,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834474494] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:37:16,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42189556] [2023-01-28 02:37:16,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:37:16,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:16,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:37:16,918 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:37:16,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-01-28 02:37:17,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:37:17,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:37:17,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:37:17,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:37:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:37:17,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:37:17,765 INFO L321 Elim1Store]: treesize reduction 13, result has 93.4 percent of original size [2023-01-28 02:37:17,765 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 119 treesize of output 218 [2023-01-28 02:37:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:37:18,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42189556] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:37:18,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:37:18,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 31 [2023-01-28 02:37:18,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145725109] [2023-01-28 02:37:18,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:37:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 02:37:18,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 02:37:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:37:18,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:37:18,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1119 transitions, 28193 flow. Second operand has 31 states, 31 states have (on average 146.90322580645162) internal successors, (4554), 31 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:18,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:18,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:37:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:37:22,698 INFO L130 PetriNetUnfolder]: 5222/9254 cut-off events. [2023-01-28 02:37:22,698 INFO L131 PetriNetUnfolder]: For 394010/394010 co-relation queries the response was YES. [2023-01-28 02:37:22,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102732 conditions, 9254 events. 5222/9254 cut-off events. For 394010/394010 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 69053 event pairs, 1247 based on Foata normal form. 116/9370 useless extension candidates. Maximal degree in co-relation 102614. Up to 5923 conditions per place. [2023-01-28 02:37:22,818 INFO L137 encePairwiseOnDemand]: 470/483 looper letters, 779 selfloop transitions, 402 changer transitions 5/1186 dead transitions. [2023-01-28 02:37:22,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1186 transitions, 31900 flow [2023-01-28 02:37:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:37:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:37:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2256 transitions. [2023-01-28 02:37:22,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3113871635610766 [2023-01-28 02:37:22,820 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2256 transitions. [2023-01-28 02:37:22,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2256 transitions. [2023-01-28 02:37:22,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:37:22,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2256 transitions. [2023-01-28 02:37:22,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 150.4) internal successors, (2256), 15 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:22,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 483.0) internal successors, (7728), 16 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:22,825 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 483.0) internal successors, (7728), 16 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:22,825 INFO L175 Difference]: Start difference. First operand has 359 places, 1119 transitions, 28193 flow. Second operand 15 states and 2256 transitions. [2023-01-28 02:37:22,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 1186 transitions, 31900 flow [2023-01-28 02:37:26,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1186 transitions, 30966 flow, removed 388 selfloop flow, removed 18 redundant places. [2023-01-28 02:37:26,355 INFO L231 Difference]: Finished difference. Result has 349 places, 1120 transitions, 28256 flow [2023-01-28 02:37:26,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=27353, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=28256, PETRI_PLACES=349, PETRI_TRANSITIONS=1120} [2023-01-28 02:37:26,356 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 324 predicate places. [2023-01-28 02:37:26,356 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 1120 transitions, 28256 flow [2023-01-28 02:37:26,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 146.90322580645162) internal successors, (4554), 31 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:26,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:37:26,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:37:26,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-01-28 02:37:26,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-01-28 02:37:26,561 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:37:26,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:37:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash -357005494, now seen corresponding path program 11 times [2023-01-28 02:37:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:37:26,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497484710] [2023-01-28 02:37:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:37:26,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:37:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:37:27,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:37:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497484710] [2023-01-28 02:37:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497484710] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:37:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964970476] [2023-01-28 02:37:27,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:37:27,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:37:27,093 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:37:27,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-01-28 02:37:27,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 02:37:27,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:37:27,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 02:37:27,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:37:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:37:27,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:37:27,852 INFO L321 Elim1Store]: treesize reduction 41, result has 79.0 percent of original size [2023-01-28 02:37:27,853 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 141 treesize of output 193 [2023-01-28 02:37:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:37:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964970476] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:37:28,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:37:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 27 [2023-01-28 02:37:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434148021] [2023-01-28 02:37:28,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:37:28,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:37:28,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:37:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:37:28,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:37:28,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1120 transitions, 28256 flow. Second operand has 27 states, 27 states have (on average 147.0) internal successors, (3969), 27 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:28,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:28,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:37:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:37:32,991 INFO L130 PetriNetUnfolder]: 5992/10828 cut-off events. [2023-01-28 02:37:32,991 INFO L131 PetriNetUnfolder]: For 433311/433311 co-relation queries the response was YES. [2023-01-28 02:37:33,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116377 conditions, 10828 events. 5992/10828 cut-off events. For 433311/433311 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 83873 event pairs, 1261 based on Foata normal form. 288/11116 useless extension candidates. Maximal degree in co-relation 116265. Up to 6416 conditions per place. [2023-01-28 02:37:33,169 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 999 selfloop transitions, 388 changer transitions 0/1387 dead transitions. [2023-01-28 02:37:33,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1387 transitions, 36552 flow [2023-01-28 02:37:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 02:37:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 02:37:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2728 transitions. [2023-01-28 02:37:33,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3137796181274442 [2023-01-28 02:37:33,172 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2728 transitions. [2023-01-28 02:37:33,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2728 transitions. [2023-01-28 02:37:33,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:37:33,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2728 transitions. [2023-01-28 02:37:33,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 151.55555555555554) internal successors, (2728), 18 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:33,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 483.0) internal successors, (9177), 19 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:33,177 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 483.0) internal successors, (9177), 19 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:33,177 INFO L175 Difference]: Start difference. First operand has 349 places, 1120 transitions, 28256 flow. Second operand 18 states and 2728 transitions. [2023-01-28 02:37:33,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1387 transitions, 36552 flow [2023-01-28 02:37:38,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1387 transitions, 35405 flow, removed 33 selfloop flow, removed 11 redundant places. [2023-01-28 02:37:38,047 INFO L231 Difference]: Finished difference. Result has 363 places, 1225 transitions, 31287 flow [2023-01-28 02:37:38,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=27272, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=31287, PETRI_PLACES=363, PETRI_TRANSITIONS=1225} [2023-01-28 02:37:38,048 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 338 predicate places. [2023-01-28 02:37:38,048 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 1225 transitions, 31287 flow [2023-01-28 02:37:38,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 147.0) internal successors, (3969), 27 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:38,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:37:38,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:37:38,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-01-28 02:37:38,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:38,254 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:37:38,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:37:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1857435442, now seen corresponding path program 12 times [2023-01-28 02:37:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:37:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367054526] [2023-01-28 02:37:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:37:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:37:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:37:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:37:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:37:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367054526] [2023-01-28 02:37:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367054526] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:37:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050917780] [2023-01-28 02:37:38,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:37:38,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:37:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:37:38,766 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:37:38,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-01-28 02:37:38,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:37:38,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:37:38,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 02:37:38,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:37:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:37:39,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:37:40,131 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:37:40,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 80 treesize of output 64 [2023-01-28 02:37:40,181 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 02:37:40,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 80 treesize of output 64 [2023-01-28 02:37:40,202 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:37:40,202 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 20 treesize of output 4 [2023-01-28 02:37:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:37:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050917780] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:37:40,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:37:40,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 32 [2023-01-28 02:37:40,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179927529] [2023-01-28 02:37:40,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:37:40,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 02:37:40,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:37:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 02:37:40,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2023-01-28 02:37:40,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 483 [2023-01-28 02:37:40,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 1225 transitions, 31287 flow. Second operand has 32 states, 32 states have (on average 140.125) internal successors, (4484), 32 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:37:40,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:37:40,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 483 [2023-01-28 02:37:40,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:38:00,245 INFO L130 PetriNetUnfolder]: 11221/20173 cut-off events. [2023-01-28 02:38:00,246 INFO L131 PetriNetUnfolder]: For 906641/906641 co-relation queries the response was YES. [2023-01-28 02:38:00,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227912 conditions, 20173 events. 11221/20173 cut-off events. For 906641/906641 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 172157 event pairs, 416 based on Foata normal form. 414/20587 useless extension candidates. Maximal degree in co-relation 227792. Up to 5983 conditions per place. [2023-01-28 02:38:00,575 INFO L137 encePairwiseOnDemand]: 467/483 looper letters, 1458 selfloop transitions, 1576 changer transitions 71/3105 dead transitions. [2023-01-28 02:38:00,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 3105 transitions, 77912 flow [2023-01-28 02:38:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-01-28 02:38:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2023-01-28 02:38:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 16923 transitions. [2023-01-28 02:38:00,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994638212029516 [2023-01-28 02:38:00,585 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 16923 transitions. [2023-01-28 02:38:00,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 16923 transitions. [2023-01-28 02:38:00,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:38:00,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 16923 transitions. [2023-01-28 02:38:00,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 144.64102564102564) internal successors, (16923), 117 states have internal predecessors, (16923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:00,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 483.0) internal successors, (56994), 118 states have internal predecessors, (56994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:00,625 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 483.0) internal successors, (56994), 118 states have internal predecessors, (56994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:00,626 INFO L175 Difference]: Start difference. First operand has 363 places, 1225 transitions, 31287 flow. Second operand 117 states and 16923 transitions. [2023-01-28 02:38:00,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 3105 transitions, 77912 flow [2023-01-28 02:38:09,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 3105 transitions, 76534 flow, removed 599 selfloop flow, removed 8 redundant places. [2023-01-28 02:38:09,980 INFO L231 Difference]: Finished difference. Result has 525 places, 2278 transitions, 61850 flow [2023-01-28 02:38:09,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=30542, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=620, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=61850, PETRI_PLACES=525, PETRI_TRANSITIONS=2278} [2023-01-28 02:38:09,982 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 500 predicate places. [2023-01-28 02:38:09,982 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 2278 transitions, 61850 flow [2023-01-28 02:38:09,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 140.125) internal successors, (4484), 32 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:09,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:38:09,983 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:38:09,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-01-28 02:38:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-01-28 02:38:10,190 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:38:10,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:38:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 561451278, now seen corresponding path program 13 times [2023-01-28 02:38:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:38:10,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205391161] [2023-01-28 02:38:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:38:10,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:38:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:38:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:38:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:38:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205391161] [2023-01-28 02:38:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205391161] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:38:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464920711] [2023-01-28 02:38:10,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:38:10,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:38:10,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:38:10,660 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:38:10,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-01-28 02:38:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:38:10,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 02:38:10,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:38:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:38:11,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:38:11,414 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:38:11,414 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 20 treesize of output 4 [2023-01-28 02:38:11,452 INFO L321 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2023-01-28 02:38:11,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 88 treesize of output 70 [2023-01-28 02:38:11,469 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:38:11,469 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 20 treesize of output 4 [2023-01-28 02:38:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:38:11,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464920711] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:38:11,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:38:11,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 39 [2023-01-28 02:38:11,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88097864] [2023-01-28 02:38:11,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:38:11,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 02:38:11,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:38:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 02:38:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 02:38:11,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:38:11,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 2278 transitions, 61850 flow. Second operand has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:11,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:38:11,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:38:11,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:38:25,252 INFO L130 PetriNetUnfolder]: 10832/19196 cut-off events. [2023-01-28 02:38:25,252 INFO L131 PetriNetUnfolder]: For 942771/942771 co-relation queries the response was YES. [2023-01-28 02:38:25,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236030 conditions, 19196 events. 10832/19196 cut-off events. For 942771/942771 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 159714 event pairs, 2346 based on Foata normal form. 36/19232 useless extension candidates. Maximal degree in co-relation 235856. Up to 12036 conditions per place. [2023-01-28 02:38:25,615 INFO L137 encePairwiseOnDemand]: 469/483 looper letters, 1368 selfloop transitions, 973 changer transitions 0/2341 dead transitions. [2023-01-28 02:38:25,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 2341 transitions, 68122 flow [2023-01-28 02:38:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 02:38:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 02:38:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2996 transitions. [2023-01-28 02:38:25,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3101449275362319 [2023-01-28 02:38:25,618 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2996 transitions. [2023-01-28 02:38:25,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2996 transitions. [2023-01-28 02:38:25,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:38:25,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2996 transitions. [2023-01-28 02:38:25,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:25,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 483.0) internal successors, (10143), 21 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:25,623 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 483.0) internal successors, (10143), 21 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:25,623 INFO L175 Difference]: Start difference. First operand has 525 places, 2278 transitions, 61850 flow. Second operand 20 states and 2996 transitions. [2023-01-28 02:38:25,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 2341 transitions, 68122 flow [2023-01-28 02:38:44,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 2341 transitions, 59106 flow, removed 4371 selfloop flow, removed 17 redundant places. [2023-01-28 02:38:44,075 INFO L231 Difference]: Finished difference. Result has 528 places, 2291 transitions, 56385 flow [2023-01-28 02:38:44,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=53026, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=947, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=56385, PETRI_PLACES=528, PETRI_TRANSITIONS=2291} [2023-01-28 02:38:44,077 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 503 predicate places. [2023-01-28 02:38:44,077 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 2291 transitions, 56385 flow [2023-01-28 02:38:44,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:44,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:38:44,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:38:44,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-01-28 02:38:44,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:38:44,283 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:38:44,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:38:44,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1055073050, now seen corresponding path program 14 times [2023-01-28 02:38:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:38:44,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861342137] [2023-01-28 02:38:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:38:44,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:38:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:38:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:38:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:38:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861342137] [2023-01-28 02:38:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861342137] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:38:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419655014] [2023-01-28 02:38:44,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:38:44,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:38:44,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:38:44,837 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:38:44,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-01-28 02:38:44,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:38:44,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:38:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 02:38:44,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:38:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:38:45,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:38:45,520 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:38:45,520 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 20 treesize of output 4 [2023-01-28 02:38:45,549 INFO L321 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2023-01-28 02:38:45,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 88 treesize of output 70 [2023-01-28 02:38:45,564 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:38:45,565 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 20 treesize of output 4 [2023-01-28 02:38:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:38:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419655014] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:38:45,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:38:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 39 [2023-01-28 02:38:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225735639] [2023-01-28 02:38:45,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:38:45,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 02:38:45,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:38:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 02:38:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 02:38:45,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:38:45,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 2291 transitions, 56385 flow. Second operand has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:45,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:38:45,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:38:45,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:38:59,287 INFO L130 PetriNetUnfolder]: 11284/19982 cut-off events. [2023-01-28 02:38:59,287 INFO L131 PetriNetUnfolder]: For 534387/534387 co-relation queries the response was YES. [2023-01-28 02:38:59,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190817 conditions, 19982 events. 11284/19982 cut-off events. For 534387/534387 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 167361 event pairs, 1721 based on Foata normal form. 144/20126 useless extension candidates. Maximal degree in co-relation 190646. Up to 7944 conditions per place. [2023-01-28 02:38:59,620 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 1674 selfloop transitions, 820 changer transitions 2/2496 dead transitions. [2023-01-28 02:38:59,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 2496 transitions, 64589 flow [2023-01-28 02:38:59,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 02:38:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 02:38:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4235 transitions. [2023-01-28 02:38:59,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31314699792960665 [2023-01-28 02:38:59,623 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4235 transitions. [2023-01-28 02:38:59,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4235 transitions. [2023-01-28 02:38:59,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:38:59,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4235 transitions. [2023-01-28 02:38:59,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 151.25) internal successors, (4235), 28 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:59,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 483.0) internal successors, (14007), 29 states have internal predecessors, (14007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:59,631 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 483.0) internal successors, (14007), 29 states have internal predecessors, (14007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:38:59,631 INFO L175 Difference]: Start difference. First operand has 528 places, 2291 transitions, 56385 flow. Second operand 28 states and 4235 transitions. [2023-01-28 02:38:59,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 2496 transitions, 64589 flow [2023-01-28 02:39:09,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 2496 transitions, 63410 flow, removed 96 selfloop flow, removed 13 redundant places. [2023-01-28 02:39:09,183 INFO L231 Difference]: Finished difference. Result has 547 places, 2345 transitions, 58252 flow [2023-01-28 02:39:09,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=55232, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=764, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=58252, PETRI_PLACES=547, PETRI_TRANSITIONS=2345} [2023-01-28 02:39:09,185 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 522 predicate places. [2023-01-28 02:39:09,185 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 2345 transitions, 58252 flow [2023-01-28 02:39:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 146.55) internal successors, (5862), 40 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:09,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:39:09,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:39:09,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-01-28 02:39:09,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:39:09,390 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:39:09,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:39:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2127378916, now seen corresponding path program 15 times [2023-01-28 02:39:09,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:39:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566507972] [2023-01-28 02:39:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:39:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:39:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:39:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:39:09,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:39:09,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566507972] [2023-01-28 02:39:09,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566507972] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:39:09,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652825753] [2023-01-28 02:39:09,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:39:09,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:39:09,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:39:09,847 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:39:09,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-01-28 02:39:10,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 02:39:10,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:39:10,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 64 conjunts are in the unsatisfiable core [2023-01-28 02:39:10,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:39:10,295 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 02:39:10,352 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:39:10,401 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:39:10,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:39:10,823 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-01-28 02:39:10,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 1 [2023-01-28 02:39:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:39:10,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:39:12,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,204 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 1 case distinctions, treesize of input 56 treesize of output 45 [2023-01-28 02:39:12,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,213 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 422 treesize of output 370 [2023-01-28 02:39:12,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,225 INFO L350 Elim1Store]: Elim1 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 358 treesize of output 271 [2023-01-28 02:39:12,236 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,237 INFO L350 Elim1Store]: Elim1 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 262 treesize of output 223 [2023-01-28 02:39:12,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,328 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 1 case distinctions, treesize of input 214 treesize of output 130 [2023-01-28 02:39:12,447 INFO L321 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2023-01-28 02:39:12,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3062 treesize of output 2690 [2023-01-28 02:39:12,546 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:39:12,546 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:39:12,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,571 INFO L350 Elim1Store]: Elim1 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 1302 treesize of output 1202 [2023-01-28 02:39:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:39:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 02:39:12,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:39:12,622 INFO L350 Elim1Store]: Elim1 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 1158 treesize of output 914 [2023-01-28 02:39:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:39:17,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652825753] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:39:17,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:39:17,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 43 [2023-01-28 02:39:17,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083150289] [2023-01-28 02:39:17,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:39:17,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-01-28 02:39:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:39:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-01-28 02:39:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1651, Unknown=8, NotChecked=0, Total=1892 [2023-01-28 02:39:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 483 [2023-01-28 02:39:17,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 2345 transitions, 58252 flow. Second operand has 44 states, 44 states have (on average 131.52272727272728) internal successors, (5787), 44 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:39:17,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:39:17,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 483 [2023-01-28 02:39:17,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:39:23,483 WARN L222 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 67 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:39:25,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:39:51,553 WARN L222 SmtUtils]: Spent 24.18s on a formula simplification. DAG size of input: 64 DAG size of output: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:40:01,908 WARN L222 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 59 DAG size of output: 56 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:40:25,244 WARN L222 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 117 DAG size of output: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:40:33,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:40:35,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:40:50,134 WARN L222 SmtUtils]: Spent 10.66s on a formula simplification. DAG size of input: 121 DAG size of output: 118 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:41:03,915 WARN L222 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 120 DAG size of output: 117 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:41:27,757 INFO L130 PetriNetUnfolder]: 15570/27259 cut-off events. [2023-01-28 02:41:27,757 INFO L131 PetriNetUnfolder]: For 780775/780775 co-relation queries the response was YES. [2023-01-28 02:41:28,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271664 conditions, 27259 events. 15570/27259 cut-off events. For 780775/780775 co-relation queries the response was YES. Maximal size of possible extension queue 1757. Compared 236184 event pairs, 1619 based on Foata normal form. 555/27814 useless extension candidates. Maximal degree in co-relation 271489. Up to 6961 conditions per place. [2023-01-28 02:41:28,645 INFO L137 encePairwiseOnDemand]: 465/483 looper letters, 1923 selfloop transitions, 2746 changer transitions 6/4675 dead transitions. [2023-01-28 02:41:28,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 4675 transitions, 116228 flow [2023-01-28 02:41:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-01-28 02:41:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-01-28 02:41:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 16748 transitions. [2023-01-28 02:41:28,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28191014829402955 [2023-01-28 02:41:28,655 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 16748 transitions. [2023-01-28 02:41:28,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 16748 transitions. [2023-01-28 02:41:28,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:41:28,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 16748 transitions. [2023-01-28 02:41:28,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 136.16260162601625) internal successors, (16748), 123 states have internal predecessors, (16748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:28,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 483.0) internal successors, (59892), 124 states have internal predecessors, (59892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:28,698 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 483.0) internal successors, (59892), 124 states have internal predecessors, (59892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:28,698 INFO L175 Difference]: Start difference. First operand has 547 places, 2345 transitions, 58252 flow. Second operand 123 states and 16748 transitions. [2023-01-28 02:41:28,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 4675 transitions, 116228 flow [2023-01-28 02:41:43,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 4675 transitions, 114347 flow, removed 552 selfloop flow, removed 18 redundant places. [2023-01-28 02:41:43,986 INFO L231 Difference]: Finished difference. Result has 702 places, 3528 transitions, 95535 flow [2023-01-28 02:41:43,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=53630, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=95535, PETRI_PLACES=702, PETRI_TRANSITIONS=3528} [2023-01-28 02:41:43,987 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 677 predicate places. [2023-01-28 02:41:43,987 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 3528 transitions, 95535 flow [2023-01-28 02:41:43,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 131.52272727272728) internal successors, (5787), 44 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:43,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:41:43,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:41:43,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-01-28 02:41:44,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:41:44,194 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:41:44,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:41:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2138061786, now seen corresponding path program 16 times [2023-01-28 02:41:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:41:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325994712] [2023-01-28 02:41:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:41:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:41:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:41:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:41:44,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:41:44,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325994712] [2023-01-28 02:41:44,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325994712] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:41:44,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233383563] [2023-01-28 02:41:44,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:41:44,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:41:44,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:41:44,681 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:41:44,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-01-28 02:41:44,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:41:44,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:41:44,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 02:41:44,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:41:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:41:45,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:41:45,408 INFO L321 Elim1Store]: treesize reduction 13, result has 93.8 percent of original size [2023-01-28 02:41:45,408 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 131 treesize of output 230 [2023-01-28 02:41:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:41:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233383563] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:41:50,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:41:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 31 [2023-01-28 02:41:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209120452] [2023-01-28 02:41:50,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:41:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 02:41:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:41:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 02:41:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2023-01-28 02:41:50,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:41:50,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 3528 transitions, 95535 flow. Second operand has 31 states, 31 states have (on average 146.90322580645162) internal successors, (4554), 31 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:41:50,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:41:50,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:41:50,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:42:19,778 INFO L130 PetriNetUnfolder]: 16135/29138 cut-off events. [2023-01-28 02:42:19,778 INFO L131 PetriNetUnfolder]: For 958247/958247 co-relation queries the response was YES. [2023-01-28 02:42:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309088 conditions, 29138 events. 16135/29138 cut-off events. For 958247/958247 co-relation queries the response was YES. Maximal size of possible extension queue 1880. Compared 263790 event pairs, 1550 based on Foata normal form. 222/29360 useless extension candidates. Maximal degree in co-relation 308863. Up to 7161 conditions per place. [2023-01-28 02:42:20,830 INFO L137 encePairwiseOnDemand]: 467/483 looper letters, 1533 selfloop transitions, 2396 changer transitions 2/3931 dead transitions. [2023-01-28 02:42:20,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 3931 transitions, 112452 flow [2023-01-28 02:42:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-01-28 02:42:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-01-28 02:42:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7572 transitions. [2023-01-28 02:42:20,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3135403726708075 [2023-01-28 02:42:20,835 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7572 transitions. [2023-01-28 02:42:20,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7572 transitions. [2023-01-28 02:42:20,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:42:20,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7572 transitions. [2023-01-28 02:42:20,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 151.44) internal successors, (7572), 50 states have internal predecessors, (7572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 483.0) internal successors, (24633), 51 states have internal predecessors, (24633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 483.0) internal successors, (24633), 51 states have internal predecessors, (24633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:20,850 INFO L175 Difference]: Start difference. First operand has 702 places, 3528 transitions, 95535 flow. Second operand 50 states and 7572 transitions. [2023-01-28 02:42:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 3931 transitions, 112452 flow [2023-01-28 02:42:50,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 3931 transitions, 104911 flow, removed 3589 selfloop flow, removed 28 redundant places. [2023-01-28 02:42:50,970 INFO L231 Difference]: Finished difference. Result has 733 places, 3662 transitions, 101179 flow [2023-01-28 02:42:50,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=86026, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=101179, PETRI_PLACES=733, PETRI_TRANSITIONS=3662} [2023-01-28 02:42:50,972 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 708 predicate places. [2023-01-28 02:42:50,972 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 3662 transitions, 101179 flow [2023-01-28 02:42:50,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 146.90322580645162) internal successors, (4554), 31 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:50,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:42:50,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:42:50,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-01-28 02:42:51,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:42:51,179 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:42:51,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:42:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash -389256674, now seen corresponding path program 17 times [2023-01-28 02:42:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:42:51,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678163033] [2023-01-28 02:42:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:42:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:42:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:42:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:42:51,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:42:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678163033] [2023-01-28 02:42:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678163033] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:42:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288743183] [2023-01-28 02:42:51,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:42:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:42:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:42:51,686 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:42:51,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-01-28 02:42:51,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 02:42:51,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:42:51,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 02:42:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:42:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:42:52,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:42:52,450 INFO L321 Elim1Store]: treesize reduction 41, result has 79.0 percent of original size [2023-01-28 02:42:52,451 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 141 treesize of output 193 [2023-01-28 02:42:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:42:52,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288743183] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:42:52,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:42:52,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 27 [2023-01-28 02:42:52,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151260408] [2023-01-28 02:42:52,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:42:52,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 02:42:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:42:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 02:42:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2023-01-28 02:42:52,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 483 [2023-01-28 02:42:52,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 3662 transitions, 101179 flow. Second operand has 27 states, 27 states have (on average 147.14814814814815) internal successors, (3973), 27 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:42:52,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:42:52,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 483 [2023-01-28 02:42:52,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:43:28,014 INFO L130 PetriNetUnfolder]: 17908/32593 cut-off events. [2023-01-28 02:43:28,014 INFO L131 PetriNetUnfolder]: For 1042757/1042757 co-relation queries the response was YES. [2023-01-28 02:43:29,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333345 conditions, 32593 events. 17908/32593 cut-off events. For 1042757/1042757 co-relation queries the response was YES. Maximal size of possible extension queue 2023. Compared 301161 event pairs, 5379 based on Foata normal form. 266/32853 useless extension candidates. Maximal degree in co-relation 333117. Up to 14234 conditions per place. [2023-01-28 02:43:29,768 INFO L137 encePairwiseOnDemand]: 472/483 looper letters, 3731 selfloop transitions, 448 changer transitions 14/4193 dead transitions. [2023-01-28 02:43:29,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 4193 transitions, 121048 flow [2023-01-28 02:43:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 02:43:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 02:43:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4411 transitions. [2023-01-28 02:43:29,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3149139715856358 [2023-01-28 02:43:29,771 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4411 transitions. [2023-01-28 02:43:29,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4411 transitions. [2023-01-28 02:43:29,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:43:29,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4411 transitions. [2023-01-28 02:43:29,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 152.10344827586206) internal successors, (4411), 29 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:29,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 483.0) internal successors, (14490), 30 states have internal predecessors, (14490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:29,780 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 483.0) internal successors, (14490), 30 states have internal predecessors, (14490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:43:29,780 INFO L175 Difference]: Start difference. First operand has 733 places, 3662 transitions, 101179 flow. Second operand 29 states and 4411 transitions. [2023-01-28 02:43:29,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 4193 transitions, 121048 flow [2023-01-28 02:44:00,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 4193 transitions, 118940 flow, removed 619 selfloop flow, removed 27 redundant places. [2023-01-28 02:44:00,265 INFO L231 Difference]: Finished difference. Result has 743 places, 3733 transitions, 102169 flow [2023-01-28 02:44:00,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=99261, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=102169, PETRI_PLACES=743, PETRI_TRANSITIONS=3733} [2023-01-28 02:44:00,268 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 718 predicate places. [2023-01-28 02:44:00,268 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 3733 transitions, 102169 flow [2023-01-28 02:44:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 147.14814814814815) internal successors, (3973), 27 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:44:00,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:44:00,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:44:00,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-01-28 02:44:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-01-28 02:44:00,476 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:44:00,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:44:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash -903731730, now seen corresponding path program 18 times [2023-01-28 02:44:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:44:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806820324] [2023-01-28 02:44:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:44:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:44:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:44:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:44:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:44:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806820324] [2023-01-28 02:44:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806820324] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:44:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228441068] [2023-01-28 02:44:01,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:44:01,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:44:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:44:01,196 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:44:01,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-01-28 02:44:01,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 02:44:01,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:44:01,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 02:44:01,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:44:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:44:02,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:44:02,575 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 02:44:02,576 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 20 treesize of output 4 [2023-01-28 02:44:02,618 INFO L321 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2023-01-28 02:44:02,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 88 treesize of output 70 [2023-01-28 02:44:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:44:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228441068] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:44:03,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:44:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2023-01-28 02:44:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387531653] [2023-01-28 02:44:03,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:44:03,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-01-28 02:44:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:44:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-01-28 02:44:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2023-01-28 02:44:03,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 483 [2023-01-28 02:44:03,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 3733 transitions, 102169 flow. Second operand has 39 states, 39 states have (on average 139.64102564102564) internal successors, (5446), 39 states have internal predecessors, (5446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:44:03,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:44:03,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 483 [2023-01-28 02:44:03,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 02:44:44,038 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:44:44,038 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:44:45,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-01-28 02:44:45,244 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-01-28 02:44:45,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-01-28 02:44:45,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 02:44:45,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-01-28 02:44:45,748 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 02:44:45,754 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 02:44:45,754 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 02:44:45,755 INFO L445 BasicCegarLoop]: Path program histogram: [20, 18, 13, 11, 2, 2, 1, 1, 1, 1] [2023-01-28 02:44:45,757 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:44:45,757 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:44:45,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:44:45 BasicIcfg [2023-01-28 02:44:45,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:44:45,759 INFO L158 Benchmark]: Toolchain (without parser) took 827959.92ms. Allocated memory was 539.0MB in the beginning and 9.2GB in the end (delta: 8.7GB). Free memory was 498.7MB in the beginning and 5.8GB in the end (delta: -5.3GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 02:44:45,759 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory is still 325.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:44:45,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.43ms. Allocated memory is still 539.0MB. Free memory was 498.4MB in the beginning and 486.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 02:44:45,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.21ms. Allocated memory is still 539.0MB. Free memory was 486.8MB in the beginning and 484.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:44:45,759 INFO L158 Benchmark]: Boogie Preprocessor took 19.89ms. Allocated memory is still 539.0MB. Free memory was 484.4MB in the beginning and 482.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:44:45,760 INFO L158 Benchmark]: RCFGBuilder took 389.98ms. Allocated memory is still 539.0MB. Free memory was 482.7MB in the beginning and 462.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 02:44:45,763 INFO L158 Benchmark]: TraceAbstraction took 827367.31ms. Allocated memory was 539.0MB in the beginning and 9.2GB in the end (delta: 8.7GB). Free memory was 461.4MB in the beginning and 5.8GB in the end (delta: -5.3GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 02:44:45,764 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 375.4MB. Free memory is still 325.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 152.43ms. Allocated memory is still 539.0MB. Free memory was 498.4MB in the beginning and 486.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.21ms. Allocated memory is still 539.0MB. Free memory was 486.8MB in the beginning and 484.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.89ms. Allocated memory is still 539.0MB. Free memory was 484.4MB in the beginning and 482.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 389.98ms. Allocated memory is still 539.0MB. Free memory was 482.7MB in the beginning and 462.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 827367.31ms. Allocated memory was 539.0MB in the beginning and 9.2GB in the end (delta: 8.7GB). Free memory was 461.4MB in the beginning and 5.8GB in the end (delta: -5.3GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 207 PlacesBefore, 25 PlacesAfterwards, 221 TransitionsBefore, 23 TransitionsAfterwards, 5192 CoEnabledTransitionPairs, 8 FixpointIterations, 106 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 21 ConcurrentYvCompositions, 16 ChoiceCompositions, 252 TotalNumberOfCompositions, 5413 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4726, independent: 4651, independent conditional: 0, independent unconditional: 4651, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2952, independent: 2934, independent conditional: 0, independent unconditional: 2934, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4726, independent: 1717, independent conditional: 0, independent unconditional: 1717, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 2952, unknown conditional: 0, unknown unconditional: 2952] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 293 locations, 3 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: 827.2s, OverallIterations: 70, TraceHistogramMax: 2, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 671.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 130 mSolverCounterUnknown, 14887 SdHoareTripleChecker+Valid, 45.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14887 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 41.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 399 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 843 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48383 IncrementalHoareTripleChecker+Invalid, 49755 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 843 mSolverCounterUnsat, 0 mSDtfsCounter, 48383 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3955 GetRequests, 1278 SyntacticMatches, 58 SemanticMatches, 2619 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 37822 ImplicationChecksByTransitivity, 208.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102169occurred in iteration=69, InterpolantAutomatonStates: 1272, 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: 0.8s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 127.7s InterpolantComputationTime, 2627 NumberOfCodeBlocks, 2598 NumberOfCodeBlocksAsserted, 168 NumberOfCheckSat, 3395 ConstructedInterpolants, 155 QuantifiedInterpolants, 64217 SizeOfPredicates, 1609 NumberOfNonLiveVariables, 12667 ConjunctsInSsa, 1979 ConjunctsInUnsatCore, 173 InterpolantComputations, 34 PerfectInterpolantSequences, 333/794 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 !ENTRY org.eclipse.osgi 4 0 2023-01-28 02:44:45.786 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3646c2936/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)