/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/unroll-cond-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:49:12,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:49:12,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:49:12,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:49:12,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:49:12,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:49:12,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:49:12,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:49:12,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:49:12,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:49:12,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:49:12,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:49:12,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:49:12,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:49:12,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:49:12,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:49:12,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:49:12,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:49:12,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:49:12,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:49:12,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:49:12,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:49:12,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:49:12,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:49:12,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:49:12,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:49:12,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:49:12,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:49:12,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:49:12,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:49:12,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:49:12,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:49:12,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:49:12,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:49:12,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:49:12,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:49:12,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:49:12,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:49:12,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:49:12,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:49:12,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:49:12,173 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 05:49:12,197 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:49:12,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:49:12,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:49:12,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:49:12,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:49:12,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:49:12,199 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:49:12,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:49:12,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:49:12,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:49:12,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:49:12,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:49:12,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:49:12,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:49:12,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:49:12,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:49:12,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:49:12,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:49:12,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:49:12,399 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:49:12,401 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:49:12,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-01-28 05:49:13,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:49:13,453 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:49:13,453 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-01-28 05:49:13,457 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc011766/6bf461c650244f9095a0f0b98355e1ec/FLAG9cc594d98 [2023-01-28 05:49:13,466 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc011766/6bf461c650244f9095a0f0b98355e1ec [2023-01-28 05:49:13,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:49:13,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:49:13,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:49:13,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:49:13,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:49:13,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c37513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13, skipping insertion in model container [2023-01-28 05:49:13,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:49:13,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:49:13,624 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/unroll-cond-3.wvr.c[2641,2654] [2023-01-28 05:49:13,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:49:13,645 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:49:13,673 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/unroll-cond-3.wvr.c[2641,2654] [2023-01-28 05:49:13,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:49:13,693 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:49:13,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13 WrapperNode [2023-01-28 05:49:13,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:49:13,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:49:13,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:49:13,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:49:13,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,737 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2023-01-28 05:49:13,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:49:13,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:49:13,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:49:13,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:49:13,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:49:13,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:49:13,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:49:13,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:49:13,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (1/1) ... [2023-01-28 05:49:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:49:13,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:49:13,796 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 05:49:13,812 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 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:49:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:49:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:49:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:49:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:49:13,824 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 05:49:13,925 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:49:13,926 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:49:14,164 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:49:14,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:49:14,170 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 05:49:14,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:49:14 BoogieIcfgContainer [2023-01-28 05:49:14,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:49:14,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:49:14,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:49:14,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:49:14,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:49:13" (1/3) ... [2023-01-28 05:49:14,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2cb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:49:14, skipping insertion in model container [2023-01-28 05:49:14,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:49:13" (2/3) ... [2023-01-28 05:49:14,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2cb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:49:14, skipping insertion in model container [2023-01-28 05:49:14,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:49:14" (3/3) ... [2023-01-28 05:49:14,176 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2023-01-28 05:49:14,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:49:14,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:49:14,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:49:14,258 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 05:49:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 194 transitions, 404 flow [2023-01-28 05:49:14,368 INFO L130 PetriNetUnfolder]: 18/192 cut-off events. [2023-01-28 05:49:14,369 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:49:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 192 events. 18/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 300 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 05:49:14,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 194 transitions, 404 flow [2023-01-28 05:49:14,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 184 transitions, 380 flow [2023-01-28 05:49:14,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:49:14,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 184 transitions, 380 flow [2023-01-28 05:49:14,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 184 transitions, 380 flow [2023-01-28 05:49:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 184 transitions, 380 flow [2023-01-28 05:49:14,418 INFO L130 PetriNetUnfolder]: 18/184 cut-off events. [2023-01-28 05:49:14,418 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:49:14,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 18/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 05:49:14,421 INFO L119 LiptonReduction]: Number of co-enabled transitions 4092 [2023-01-28 05:49:18,927 INFO L134 LiptonReduction]: Checked pairs total: 4038 [2023-01-28 05:49:18,928 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-01-28 05:49:18,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:49:18,952 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;@447554eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:49:18,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 05:49:18,957 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 05:49:18,957 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:49:18,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:18,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:18,958 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 05:49:18,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:18,961 INFO L85 PathProgramCache]: Analyzing trace with hash -562838425, now seen corresponding path program 1 times [2023-01-28 05:49:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:18,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218429502] [2023-01-28 05:49:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:18,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:19,257 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 05:49:19,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:19,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218429502] [2023-01-28 05:49:19,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218429502] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:19,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:19,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:49:19,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462665692] [2023-01-28 05:49:19,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:19,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:49:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:49:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:49:19,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 415 [2023-01-28 05:49:19,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:19,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 415 [2023-01-28 05:49:19,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:19,326 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-28 05:49:19,326 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 05:49:19,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-28 05:49:19,329 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 05:49:19,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 05:49:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:49:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:49:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-01-28 05:49:19,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41124497991967873 [2023-01-28 05:49:19,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-01-28 05:49:19,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-01-28 05:49:19,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:19,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-01-28 05:49:19,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,359 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 512 transitions. [2023-01-28 05:49:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 05:49:19,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 05:49:19,362 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 05:49:19,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 05:49:19,365 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 05:49:19,365 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 05:49:19,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:19,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:19,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:49:19,366 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 05:49:19,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1112897671, now seen corresponding path program 1 times [2023-01-28 05:49:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94356502] [2023-01-28 05:49:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:19,635 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 05:49:19,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:19,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94356502] [2023-01-28 05:49:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94356502] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:49:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626240249] [2023-01-28 05:49:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:49:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:19,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:49:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:49:19,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:19,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:19,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:19,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:19,748 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-01-28 05:49:19,748 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:49:19,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 367 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-01-28 05:49:19,751 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-01-28 05:49:19,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-01-28 05:49:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:49:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:49:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 800 transitions. [2023-01-28 05:49:19,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855421686746988 [2023-01-28 05:49:19,754 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 800 transitions. [2023-01-28 05:49:19,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 800 transitions. [2023-01-28 05:49:19,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:19,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 800 transitions. [2023-01-28 05:49:19,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,759 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 800 transitions. [2023-01-28 05:49:19,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-01-28 05:49:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:49:19,761 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-01-28 05:49:19,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-28 05:49:19,762 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-28 05:49:19,763 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-01-28 05:49:19,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:19,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:49:19,764 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 05:49:19,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:19,766 INFO L85 PathProgramCache]: Analyzing trace with hash -387576613, now seen corresponding path program 2 times [2023-01-28 05:49:19,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:19,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745513984] [2023-01-28 05:49:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:19,925 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 05:49:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745513984] [2023-01-28 05:49:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745513984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:19,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:19,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:49:19,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040069530] [2023-01-28 05:49:19,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:19,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:49:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:49:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:49:19,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:19,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:19,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:19,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:19,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:20,045 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2023-01-28 05:49:20,045 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-01-28 05:49:20,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 662 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2023-01-28 05:49:20,047 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-01-28 05:49:20,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2023-01-28 05:49:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:49:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:49:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-01-28 05:49:20,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836144578313253 [2023-01-28 05:49:20,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-01-28 05:49:20,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-01-28 05:49:20,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:20,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-01-28 05:49:20,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,055 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 796 transitions. [2023-01-28 05:49:20,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2023-01-28 05:49:20,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 05:49:20,058 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2023-01-28 05:49:20,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 05:49:20,058 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-01-28 05:49:20,061 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2023-01-28 05:49:20,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:20,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:20,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:49:20,062 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 05:49:20,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash 111746231, now seen corresponding path program 3 times [2023-01-28 05:49:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:20,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054557993] [2023-01-28 05:49:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:20,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:20,242 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 05:49:20,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:20,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054557993] [2023-01-28 05:49:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054557993] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:20,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:49:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083339751] [2023-01-28 05:49:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:49:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:49:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:49:20,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:20,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:20,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:20,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:20,335 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2023-01-28 05:49:20,336 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-01-28 05:49:20,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 744 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2023-01-28 05:49:20,338 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-01-28 05:49:20,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2023-01-28 05:49:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:49:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:49:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2023-01-28 05:49:20,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860240963855422 [2023-01-28 05:49:20,339 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2023-01-28 05:49:20,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2023-01-28 05:49:20,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:20,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2023-01-28 05:49:20,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,346 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,347 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 801 transitions. [2023-01-28 05:49:20,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2023-01-28 05:49:20,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 05:49:20,351 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2023-01-28 05:49:20,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-01-28 05:49:20,353 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-28 05:49:20,353 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2023-01-28 05:49:20,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:20,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:20,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:49:20,354 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 05:49:20,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash 664116733, now seen corresponding path program 4 times [2023-01-28 05:49:20,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:20,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550080395] [2023-01-28 05:49:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:20,507 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 05:49:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550080395] [2023-01-28 05:49:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550080395] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:20,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:49:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643065874] [2023-01-28 05:49:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:49:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:49:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:49:20,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:20,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:20,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:20,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:20,583 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2023-01-28 05:49:20,583 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-01-28 05:49:20,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 720 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2023-01-28 05:49:20,585 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2023-01-28 05:49:20,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2023-01-28 05:49:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:49:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:49:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-01-28 05:49:20,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38313253012048193 [2023-01-28 05:49:20,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-01-28 05:49:20,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-01-28 05:49:20,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:20,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-01-28 05:49:20,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,593 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 795 transitions. [2023-01-28 05:49:20,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2023-01-28 05:49:20,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 05:49:20,596 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2023-01-28 05:49:20,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-28 05:49:20,598 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-01-28 05:49:20,598 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2023-01-28 05:49:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:20,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:20,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:49:20,599 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 05:49:20,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:20,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1682708675, now seen corresponding path program 5 times [2023-01-28 05:49:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:20,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414635685] [2023-01-28 05:49:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:20,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:20,710 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 05:49:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414635685] [2023-01-28 05:49:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414635685] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:49:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539519157] [2023-01-28 05:49:20,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:20,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:49:20,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:20,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:49:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:49:20,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:20,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:20,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:20,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:20,811 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2023-01-28 05:49:20,811 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-28 05:49:20,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 742 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2023-01-28 05:49:20,813 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-01-28 05:49:20,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2023-01-28 05:49:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:49:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:49:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-01-28 05:49:20,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38506024096385544 [2023-01-28 05:49:20,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-01-28 05:49:20,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-01-28 05:49:20,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:20,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-01-28 05:49:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,819 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,819 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 799 transitions. [2023-01-28 05:49:20,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2023-01-28 05:49:20,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 05:49:20,821 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2023-01-28 05:49:20,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-01-28 05:49:20,822 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-01-28 05:49:20,822 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2023-01-28 05:49:20,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:20,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:20,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:49:20,823 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 05:49:20,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1368229791, now seen corresponding path program 6 times [2023-01-28 05:49:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38998496] [2023-01-28 05:49:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:20,927 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 05:49:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38998496] [2023-01-28 05:49:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38998496] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:49:20,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:49:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:49:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537870077] [2023-01-28 05:49:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:49:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:49:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:49:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:49:20,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:20,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:20,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:20,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:20,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:21,038 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-01-28 05:49:21,038 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2023-01-28 05:49:21,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 703 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2023-01-28 05:49:21,040 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2023-01-28 05:49:21,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2023-01-28 05:49:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:49:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:49:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-01-28 05:49:21,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38313253012048193 [2023-01-28 05:49:21,043 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-01-28 05:49:21,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-01-28 05:49:21,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:21,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-01-28 05:49:21,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:21,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:21,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:21,048 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 795 transitions. [2023-01-28 05:49:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2023-01-28 05:49:21,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 05:49:21,051 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2023-01-28 05:49:21,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-01-28 05:49:21,051 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2023-01-28 05:49:21,051 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2023-01-28 05:49:21,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:21,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:21,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:49:21,052 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 05:49:21,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1003719491, now seen corresponding path program 1 times [2023-01-28 05:49:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303249084] [2023-01-28 05:49:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:21,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:21,225 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 05:49:21,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303249084] [2023-01-28 05:49:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303249084] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:49:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942080288] [2023-01-28 05:49:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:21,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:49:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:49:21,229 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 05:49:21,230 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 05:49:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:21,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 05:49:21,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:49:21,728 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 05:49:21,729 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 179 treesize of output 168 [2023-01-28 05:49:21,832 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 05:49:21,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:49:22,766 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-01-28 05:49:22,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 45 [2023-01-28 05:49:22,855 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 05:49:22,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942080288] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:49:22,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:49:22,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 18 [2023-01-28 05:49:22,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160792327] [2023-01-28 05:49:22,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:49:22,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 05:49:22,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 05:49:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-28 05:49:22,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 05:49:22,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 108.16666666666667) internal successors, (1947), 18 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:22,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:22,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 05:49:22,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:25,822 INFO L130 PetriNetUnfolder]: 445/853 cut-off events. [2023-01-28 05:49:25,822 INFO L131 PetriNetUnfolder]: For 2069/2069 co-relation queries the response was YES. [2023-01-28 05:49:25,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 853 events. 445/853 cut-off events. For 2069/2069 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4322 event pairs, 17 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 2803. Up to 261 conditions per place. [2023-01-28 05:49:25,827 INFO L137 encePairwiseOnDemand]: 403/415 looper letters, 140 selfloop transitions, 91 changer transitions 28/259 dead transitions. [2023-01-28 05:49:25,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 259 transitions, 1884 flow [2023-01-28 05:49:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 05:49:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 05:49:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3727 transitions. [2023-01-28 05:49:25,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27214311792625046 [2023-01-28 05:49:25,835 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3727 transitions. [2023-01-28 05:49:25,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3727 transitions. [2023-01-28 05:49:25,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:25,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3727 transitions. [2023-01-28 05:49:25,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 112.93939393939394) internal successors, (3727), 33 states have internal predecessors, (3727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:25,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 415.0) internal successors, (14110), 34 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:25,854 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 415.0) internal successors, (14110), 34 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:25,855 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 33 states and 3727 transitions. [2023-01-28 05:49:25,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 259 transitions, 1884 flow [2023-01-28 05:49:25,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 259 transitions, 1776 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 05:49:25,864 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 1210 flow [2023-01-28 05:49:25,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1210, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2023-01-28 05:49:25,866 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 74 predicate places. [2023-01-28 05:49:25,866 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 1210 flow [2023-01-28 05:49:25,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 108.16666666666667) internal successors, (1947), 18 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:25,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:25,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:25,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:49:26,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:49:26,072 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 05:49:26,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash -763425186, now seen corresponding path program 1 times [2023-01-28 05:49:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920132867] [2023-01-28 05:49:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:26,284 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 05:49:26,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920132867] [2023-01-28 05:49:26,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920132867] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:49:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779834163] [2023-01-28 05:49:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:26,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:49:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:49:26,287 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 05:49:26,289 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 05:49:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:26,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 05:49:26,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:49:26,398 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 05:49:26,424 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 05:49:26,448 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 05:49:26,870 INFO L321 Elim1Store]: treesize reduction 74, result has 14.9 percent of original size [2023-01-28 05:49:26,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 301 treesize of output 212 [2023-01-28 05:49:26,948 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 05:49:26,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:49:28,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:49:28,268 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 250 treesize of output 154 [2023-01-28 05:49:28,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:49:28,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 934 treesize of output 838 [2023-01-28 05:49:28,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:49:28,322 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 149 [2023-01-28 05:49:28,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:49:28,572 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 154 [2023-01-28 05:49:29,367 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 05:49:29,367 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 438 treesize of output 1 [2023-01-28 05:49:29,418 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 05:49:29,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779834163] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:49:29,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:49:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 23 [2023-01-28 05:49:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027136858] [2023-01-28 05:49:29,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:49:29,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 05:49:29,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 05:49:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=374, Unknown=11, NotChecked=0, Total=506 [2023-01-28 05:49:29,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 415 [2023-01-28 05:49:29,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 1210 flow. Second operand has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:29,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:29,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 415 [2023-01-28 05:49:29,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:37,898 WARN L222 SmtUtils]: Spent 8.32s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:49:43,657 INFO L130 PetriNetUnfolder]: 681/1278 cut-off events. [2023-01-28 05:49:43,657 INFO L131 PetriNetUnfolder]: For 7461/7461 co-relation queries the response was YES. [2023-01-28 05:49:43,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 1278 events. 681/1278 cut-off events. For 7461/7461 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7096 event pairs, 68 based on Foata normal form. 13/1289 useless extension candidates. Maximal degree in co-relation 6279. Up to 421 conditions per place. [2023-01-28 05:49:43,666 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 122 selfloop transitions, 116 changer transitions 36/274 dead transitions. [2023-01-28 05:49:43,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 274 transitions, 2760 flow [2023-01-28 05:49:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 05:49:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 05:49:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2465 transitions. [2023-01-28 05:49:43,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20481927710843373 [2023-01-28 05:49:43,672 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2465 transitions. [2023-01-28 05:49:43,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2465 transitions. [2023-01-28 05:49:43,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:43,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2465 transitions. [2023-01-28 05:49:43,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 85.0) internal successors, (2465), 29 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:43,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 415.0) internal successors, (12450), 30 states have internal predecessors, (12450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:43,687 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 415.0) internal successors, (12450), 30 states have internal predecessors, (12450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:43,687 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 1210 flow. Second operand 29 states and 2465 transitions. [2023-01-28 05:49:43,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 274 transitions, 2760 flow [2023-01-28 05:49:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 274 transitions, 2452 flow, removed 131 selfloop flow, removed 7 redundant places. [2023-01-28 05:49:43,711 INFO L231 Difference]: Finished difference. Result has 120 places, 160 transitions, 1674 flow [2023-01-28 05:49:43,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1674, PETRI_PLACES=120, PETRI_TRANSITIONS=160} [2023-01-28 05:49:43,712 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 99 predicate places. [2023-01-28 05:49:43,712 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 160 transitions, 1674 flow [2023-01-28 05:49:43,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:43,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:43,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:43,719 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 05:49:43,917 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,SelfDestructingSolverStorable8 [2023-01-28 05:49:43,918 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 05:49:43,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608103, now seen corresponding path program 2 times [2023-01-28 05:49:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424936910] [2023-01-28 05:49:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:44,066 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 05:49:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424936910] [2023-01-28 05:49:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424936910] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:49:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743125681] [2023-01-28 05:49:44,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:49:44,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:49:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:49:44,068 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 05:49:44,071 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 05:49:44,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:49:44,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:49:44,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:49:44,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:49:44,212 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 05:49:44,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:49:44,302 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 05:49:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743125681] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:49:44,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:49:44,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 05:49:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225654340] [2023-01-28 05:49:44,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:49:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:49:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:49:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:49:44,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:49:44,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 05:49:44,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 160 transitions, 1674 flow. Second operand has 12 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:44,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:49:44,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 05:49:44,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:49:44,782 INFO L130 PetriNetUnfolder]: 715/1334 cut-off events. [2023-01-28 05:49:44,782 INFO L131 PetriNetUnfolder]: For 9184/9184 co-relation queries the response was YES. [2023-01-28 05:49:44,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1334 events. 715/1334 cut-off events. For 9184/9184 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7403 event pairs, 260 based on Foata normal form. 24/1357 useless extension candidates. Maximal degree in co-relation 6772. Up to 1097 conditions per place. [2023-01-28 05:49:44,790 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 153 selfloop transitions, 64 changer transitions 3/220 dead transitions. [2023-01-28 05:49:44,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 2616 flow [2023-01-28 05:49:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:49:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:49:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1746 transitions. [2023-01-28 05:49:44,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38247535596933185 [2023-01-28 05:49:44,798 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1746 transitions. [2023-01-28 05:49:44,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1746 transitions. [2023-01-28 05:49:44,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:49:44,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1746 transitions. [2023-01-28 05:49:44,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:44,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 415.0) internal successors, (4980), 12 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:44,805 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 415.0) internal successors, (4980), 12 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:44,806 INFO L175 Difference]: Start difference. First operand has 120 places, 160 transitions, 1674 flow. Second operand 11 states and 1746 transitions. [2023-01-28 05:49:44,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 2616 flow [2023-01-28 05:49:44,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 2335 flow, removed 89 selfloop flow, removed 12 redundant places. [2023-01-28 05:49:44,835 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 1999 flow [2023-01-28 05:49:44,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1999, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2023-01-28 05:49:44,836 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 98 predicate places. [2023-01-28 05:49:44,836 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 1999 flow [2023-01-28 05:49:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:49:44,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:49:44,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:49:44,845 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 05:49:45,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:49:45,042 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 05:49:45,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:49:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1315904287, now seen corresponding path program 3 times [2023-01-28 05:49:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:49:45,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136439750] [2023-01-28 05:49:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:49:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:49:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:49:45,191 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 05:49:45,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:49:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136439750] [2023-01-28 05:49:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136439750] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:49:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316096984] [2023-01-28 05:49:45,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:49:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:49:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:49:45,193 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 05:49:45,195 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 05:49:45,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:49:45,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:49:45,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 05:49:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:49:45,528 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 05:49:45,529 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 179 treesize of output 168 [2023-01-28 05:49:45,627 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 05:49:45,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:49:46,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:49:46,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 148 [2023-01-28 05:50:06,846 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 05:50:06,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316096984] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:50:06,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:50:06,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 05:50:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049154137] [2023-01-28 05:50:06,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:50:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:50:06,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:50:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:50:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:50:06,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 05:50:06,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 1999 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:06,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:50:06,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 05:50:06,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:50:09,136 INFO L130 PetriNetUnfolder]: 823/1530 cut-off events. [2023-01-28 05:50:09,136 INFO L131 PetriNetUnfolder]: For 10511/10511 co-relation queries the response was YES. [2023-01-28 05:50:09,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 1530 events. 823/1530 cut-off events. For 10511/10511 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8744 event pairs, 155 based on Foata normal form. 12/1541 useless extension candidates. Maximal degree in co-relation 8388. Up to 1102 conditions per place. [2023-01-28 05:50:09,146 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 182 selfloop transitions, 79 changer transitions 11/272 dead transitions. [2023-01-28 05:50:09,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 272 transitions, 3146 flow [2023-01-28 05:50:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 05:50:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 05:50:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2670 transitions. [2023-01-28 05:50:09,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2680722891566265 [2023-01-28 05:50:09,150 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2670 transitions. [2023-01-28 05:50:09,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2670 transitions. [2023-01-28 05:50:09,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:50:09,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2670 transitions. [2023-01-28 05:50:09,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 111.25) internal successors, (2670), 24 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:09,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:09,164 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:09,164 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 1999 flow. Second operand 24 states and 2670 transitions. [2023-01-28 05:50:09,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 272 transitions, 3146 flow [2023-01-28 05:50:09,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 272 transitions, 2957 flow, removed 88 selfloop flow, removed 2 redundant places. [2023-01-28 05:50:09,209 INFO L231 Difference]: Finished difference. Result has 144 places, 207 transitions, 2300 flow [2023-01-28 05:50:09,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2300, PETRI_PLACES=144, PETRI_TRANSITIONS=207} [2023-01-28 05:50:09,209 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 123 predicate places. [2023-01-28 05:50:09,209 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 207 transitions, 2300 flow [2023-01-28 05:50:09,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:09,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:50:09,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:50:09,216 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 05:50:09,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:50:09,415 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 05:50:09,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:50:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash -858716135, now seen corresponding path program 4 times [2023-01-28 05:50:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:50:09,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45586784] [2023-01-28 05:50:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:50:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:50:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:50:09,568 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 05:50:09,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:50:09,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45586784] [2023-01-28 05:50:09,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45586784] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:50:09,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294302670] [2023-01-28 05:50:09,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:50:09,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:50:09,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:50:09,570 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 05:50:09,572 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 05:50:09,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:50:09,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:50:09,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 05:50:09,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:50:09,952 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 05:50:09,953 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-01-28 05:50:09,979 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 05:50:09,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:50:10,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:50:10,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 230 treesize of output 230 [2023-01-28 05:50:32,645 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 05:50:32,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294302670] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:50:32,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:50:32,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 05:50:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449518860] [2023-01-28 05:50:32,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:50:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:50:32,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:50:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:50:32,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:50:32,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 05:50:32,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 207 transitions, 2300 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:32,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:50:32,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 05:50:32,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:50:33,801 INFO L130 PetriNetUnfolder]: 1162/2218 cut-off events. [2023-01-28 05:50:33,801 INFO L131 PetriNetUnfolder]: For 14660/14660 co-relation queries the response was YES. [2023-01-28 05:50:33,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12156 conditions, 2218 events. 1162/2218 cut-off events. For 14660/14660 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14515 event pairs, 44 based on Foata normal form. 8/2225 useless extension candidates. Maximal degree in co-relation 11947. Up to 1107 conditions per place. [2023-01-28 05:50:33,816 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 193 selfloop transitions, 179 changer transitions 31/403 dead transitions. [2023-01-28 05:50:33,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 403 transitions, 4828 flow [2023-01-28 05:50:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 05:50:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 05:50:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3008 transitions. [2023-01-28 05:50:33,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2684515841142347 [2023-01-28 05:50:33,820 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3008 transitions. [2023-01-28 05:50:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3008 transitions. [2023-01-28 05:50:33,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:50:33,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3008 transitions. [2023-01-28 05:50:33,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 111.4074074074074) internal successors, (3008), 27 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:33,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 415.0) internal successors, (11620), 28 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:33,831 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 415.0) internal successors, (11620), 28 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:33,831 INFO L175 Difference]: Start difference. First operand has 144 places, 207 transitions, 2300 flow. Second operand 27 states and 3008 transitions. [2023-01-28 05:50:33,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 403 transitions, 4828 flow [2023-01-28 05:50:33,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 403 transitions, 4716 flow, removed 11 selfloop flow, removed 15 redundant places. [2023-01-28 05:50:33,889 INFO L231 Difference]: Finished difference. Result has 167 places, 290 transitions, 3841 flow [2023-01-28 05:50:33,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3841, PETRI_PLACES=167, PETRI_TRANSITIONS=290} [2023-01-28 05:50:33,889 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 146 predicate places. [2023-01-28 05:50:33,890 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 290 transitions, 3841 flow [2023-01-28 05:50:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:33,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:50:33,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:50:33,897 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 05:50:34,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 05:50:34,097 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 05:50:34,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:50:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -27525413, now seen corresponding path program 5 times [2023-01-28 05:50:34,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:50:34,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528572828] [2023-01-28 05:50:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:50:34,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:50:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:50:34,272 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 05:50:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:50:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528572828] [2023-01-28 05:50:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528572828] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:50:34,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963409869] [2023-01-28 05:50:34,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 05:50:34,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:50:34,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:50:34,274 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 05:50:34,276 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 05:50:34,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:50:34,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:50:34,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-28 05:50:34,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:50:34,377 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 05:50:34,423 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 05:50:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:50:34,514 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 05:50:34,706 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 05:50:34,706 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 163 treesize of output 152 [2023-01-28 05:50:34,780 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 05:50:34,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:50:35,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:50:35,493 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 137 treesize of output 89 [2023-01-28 05:50:35,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:50:35,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 808 treesize of output 688 [2023-01-28 05:50:35,538 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:50:35,538 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 148 [2023-01-28 05:50:35,554 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:50:35,555 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 81 [2023-01-28 05:50:35,995 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 05:50:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963409869] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:50:35,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:50:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-01-28 05:50:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019995081] [2023-01-28 05:50:35,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:50:35,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 05:50:35,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:50:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 05:50:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=382, Unknown=1, NotChecked=0, Total=462 [2023-01-28 05:50:35,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 415 [2023-01-28 05:50:35,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 290 transitions, 3841 flow. Second operand has 22 states, 22 states have (on average 101.18181818181819) internal successors, (2226), 22 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:50:35,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:50:35,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 415 [2023-01-28 05:50:35,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:50:44,796 WARN L222 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 62 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:50:51,466 WARN L222 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:51:00,030 WARN L222 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:51:06,477 WARN L222 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 86 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:51:21,864 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 05:51:22,917 INFO L130 PetriNetUnfolder]: 1340/2621 cut-off events. [2023-01-28 05:51:22,917 INFO L131 PetriNetUnfolder]: For 27203/27203 co-relation queries the response was YES. [2023-01-28 05:51:22,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 2621 events. 1340/2621 cut-off events. For 27203/27203 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18013 event pairs, 105 based on Foata normal form. 36/2656 useless extension candidates. Maximal degree in co-relation 16504. Up to 1041 conditions per place. [2023-01-28 05:51:22,933 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 184 selfloop transitions, 141 changer transitions 232/557 dead transitions. [2023-01-28 05:51:22,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 557 transitions, 7621 flow [2023-01-28 05:51:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-28 05:51:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-28 05:51:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4419 transitions. [2023-01-28 05:51:22,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2535283993115318 [2023-01-28 05:51:22,939 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4419 transitions. [2023-01-28 05:51:22,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4419 transitions. [2023-01-28 05:51:22,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:51:22,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4419 transitions. [2023-01-28 05:51:22,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 105.21428571428571) internal successors, (4419), 42 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:22,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 415.0) internal successors, (17845), 43 states have internal predecessors, (17845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:22,955 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 415.0) internal successors, (17845), 43 states have internal predecessors, (17845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:22,955 INFO L175 Difference]: Start difference. First operand has 167 places, 290 transitions, 3841 flow. Second operand 42 states and 4419 transitions. [2023-01-28 05:51:22,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 557 transitions, 7621 flow [2023-01-28 05:51:23,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 557 transitions, 7091 flow, removed 167 selfloop flow, removed 13 redundant places. [2023-01-28 05:51:23,081 INFO L231 Difference]: Finished difference. Result has 207 places, 204 transitions, 2873 flow [2023-01-28 05:51:23,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2873, PETRI_PLACES=207, PETRI_TRANSITIONS=204} [2023-01-28 05:51:23,082 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 186 predicate places. [2023-01-28 05:51:23,082 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 204 transitions, 2873 flow [2023-01-28 05:51:23,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 101.18181818181819) internal successors, (2226), 22 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:23,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:51:23,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:51:23,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 05:51:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:23,289 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 05:51:23,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:51:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash 545860189, now seen corresponding path program 6 times [2023-01-28 05:51:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:51:23,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044905524] [2023-01-28 05:51:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:51:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:51:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:23,444 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 05:51:23,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:51:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044905524] [2023-01-28 05:51:23,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044905524] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:51:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573153983] [2023-01-28 05:51:23,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:51:23,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:23,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:51:23,449 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 05:51:23,451 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 05:51:23,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 05:51:23,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:51:23,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 05:51:23,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:51:23,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:23,805 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-01-28 05:51:23,829 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 05:51:23,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:51:24,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:24,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 230 treesize of output 230 [2023-01-28 05:51:24,208 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 05:51:24,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573153983] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:51:24,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:51:24,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-01-28 05:51:24,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574269123] [2023-01-28 05:51:24,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:51:24,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 05:51:24,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:51:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 05:51:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-01-28 05:51:24,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 415 [2023-01-28 05:51:24,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 204 transitions, 2873 flow. Second operand has 17 states, 17 states have (on average 121.17647058823529) internal successors, (2060), 17 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:24,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:51:24,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 415 [2023-01-28 05:51:24,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:51:24,982 INFO L130 PetriNetUnfolder]: 617/1357 cut-off events. [2023-01-28 05:51:24,983 INFO L131 PetriNetUnfolder]: For 17023/17023 co-relation queries the response was YES. [2023-01-28 05:51:24,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1357 events. 617/1357 cut-off events. For 17023/17023 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8865 event pairs, 22 based on Foata normal form. 9/1366 useless extension candidates. Maximal degree in co-relation 9100. Up to 591 conditions per place. [2023-01-28 05:51:24,991 INFO L137 encePairwiseOnDemand]: 407/415 looper letters, 171 selfloop transitions, 122 changer transitions 11/304 dead transitions. [2023-01-28 05:51:24,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 304 transitions, 4696 flow [2023-01-28 05:51:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 05:51:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 05:51:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1998 transitions. [2023-01-28 05:51:24,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3009036144578313 [2023-01-28 05:51:24,994 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1998 transitions. [2023-01-28 05:51:24,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1998 transitions. [2023-01-28 05:51:24,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:51:24,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1998 transitions. [2023-01-28 05:51:24,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 124.875) internal successors, (1998), 16 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:24,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:24,999 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:24,999 INFO L175 Difference]: Start difference. First operand has 207 places, 204 transitions, 2873 flow. Second operand 16 states and 1998 transitions. [2023-01-28 05:51:24,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 304 transitions, 4696 flow [2023-01-28 05:51:25,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 304 transitions, 3832 flow, removed 323 selfloop flow, removed 32 redundant places. [2023-01-28 05:51:25,067 INFO L231 Difference]: Finished difference. Result has 180 places, 230 transitions, 3091 flow [2023-01-28 05:51:25,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3091, PETRI_PLACES=180, PETRI_TRANSITIONS=230} [2023-01-28 05:51:25,068 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 159 predicate places. [2023-01-28 05:51:25,068 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 230 transitions, 3091 flow [2023-01-28 05:51:25,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.17647058823529) internal successors, (2060), 17 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:25,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:51:25,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:51:25,077 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 05:51:25,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:25,273 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 05:51:25,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:51:25,274 INFO L85 PathProgramCache]: Analyzing trace with hash 79837471, now seen corresponding path program 7 times [2023-01-28 05:51:25,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:51:25,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798758316] [2023-01-28 05:51:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:51:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:51:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:25,377 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 05:51:25,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:51:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798758316] [2023-01-28 05:51:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798758316] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:51:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821713223] [2023-01-28 05:51:25,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 05:51:25,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:25,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:51:25,378 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 05:51:25,380 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 05:51:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:25,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 05:51:25,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:51:25,720 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 05:51:25,720 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 179 treesize of output 168 [2023-01-28 05:51:25,811 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 05:51:25,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:51:26,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:26,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 148 [2023-01-28 05:51:27,329 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 05:51:27,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821713223] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:51:27,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:51:27,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 05:51:27,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748650622] [2023-01-28 05:51:27,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:51:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:51:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:51:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:51:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:51:27,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 05:51:27,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 230 transitions, 3091 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:27,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:51:27,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 05:51:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:51:28,361 INFO L130 PetriNetUnfolder]: 603/1318 cut-off events. [2023-01-28 05:51:28,361 INFO L131 PetriNetUnfolder]: For 11795/11795 co-relation queries the response was YES. [2023-01-28 05:51:28,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8178 conditions, 1318 events. 603/1318 cut-off events. For 11795/11795 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8488 event pairs, 49 based on Foata normal form. 9/1327 useless extension candidates. Maximal degree in co-relation 8116. Up to 1057 conditions per place. [2023-01-28 05:51:28,368 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 189 selfloop transitions, 77 changer transitions 8/274 dead transitions. [2023-01-28 05:51:28,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 274 transitions, 3864 flow [2023-01-28 05:51:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 05:51:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 05:51:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2111 transitions. [2023-01-28 05:51:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26772352568167407 [2023-01-28 05:51:28,375 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2111 transitions. [2023-01-28 05:51:28,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2111 transitions. [2023-01-28 05:51:28,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:51:28,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2111 transitions. [2023-01-28 05:51:28,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 111.10526315789474) internal successors, (2111), 19 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:28,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 415.0) internal successors, (8300), 20 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:28,381 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 415.0) internal successors, (8300), 20 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:28,381 INFO L175 Difference]: Start difference. First operand has 180 places, 230 transitions, 3091 flow. Second operand 19 states and 2111 transitions. [2023-01-28 05:51:28,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 274 transitions, 3864 flow [2023-01-28 05:51:28,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 274 transitions, 3599 flow, removed 74 selfloop flow, removed 9 redundant places. [2023-01-28 05:51:28,429 INFO L231 Difference]: Finished difference. Result has 188 places, 229 transitions, 3009 flow [2023-01-28 05:51:28,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3009, PETRI_PLACES=188, PETRI_TRANSITIONS=229} [2023-01-28 05:51:28,430 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 167 predicate places. [2023-01-28 05:51:28,430 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 229 transitions, 3009 flow [2023-01-28 05:51:28,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:28,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:51:28,430 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 05:51:28,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 05:51:28,633 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,SelfDestructingSolverStorable14 [2023-01-28 05:51:28,633 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 05:51:28,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:51:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash -755230754, now seen corresponding path program 1 times [2023-01-28 05:51:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:51:28,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710549711] [2023-01-28 05:51:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:51:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:51:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:28,791 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 05:51:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:51:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710549711] [2023-01-28 05:51:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710549711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:51:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943692245] [2023-01-28 05:51:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:51:28,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:51:28,792 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 05:51:28,794 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 05:51:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:28,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-28 05:51:28,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:51:28,890 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 14 treesize of output 12 [2023-01-28 05:51:28,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 05:51:28,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:51:28,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:51:29,276 INFO L321 Elim1Store]: treesize reduction 83, result has 10.8 percent of original size [2023-01-28 05:51:29,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 347 treesize of output 215 [2023-01-28 05:51:29,411 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 05:51:29,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:51:30,133 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:30,133 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 276 treesize of output 168 [2023-01-28 05:51:30,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:30,162 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 466 treesize of output 466 [2023-01-28 05:51:30,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:30,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 346 [2023-01-28 05:51:30,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:30,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 181 [2023-01-28 05:51:32,829 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 05:51:32,954 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 05:51:32,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943692245] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:51:32,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:51:32,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-01-28 05:51:32,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425681435] [2023-01-28 05:51:32,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:51:32,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:51:32,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:51:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:51:32,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=310, Unknown=4, NotChecked=0, Total=380 [2023-01-28 05:51:32,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 415 [2023-01-28 05:51:32,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 229 transitions, 3009 flow. Second operand has 20 states, 20 states have (on average 81.55) internal successors, (1631), 20 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:32,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:51:32,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 415 [2023-01-28 05:51:32,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:51:33,326 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~x1~0 4) c_~f~0.offset))) (and (forall ((~x2~0 Int) (v_ArrVal_387 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_387) c_~f~0.base))) (let ((.cse3 (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (let ((.cse1 (select .cse0 (+ c_~f~0.offset (* .cse3 4))))) (or (= (select .cse0 (+ (* 4 .cse1) c_~f~0.offset)) (select .cse0 .cse2)) (<= c_~size~0 .cse3) (< .cse3 0) (< .cse1 0) (<= c_~size~0 .cse1)))))) (forall ((~x2~0 Int)) (let ((.cse6 (select |c_#memory_int| c_~f~0.base))) (let ((.cse4 (select .cse6 (+ c_~f~0.offset (* ~x2~0 4))))) (let ((.cse5 (select .cse6 (+ c_~f~0.offset (* .cse4 4))))) (or (< .cse4 0) (<= c_~size~0 .cse5) (< .cse5 0) (<= c_~size~0 .cse4) (= (select .cse6 (+ c_~f~0.offset (* .cse5 4))) (select .cse6 .cse2))))))))) is different from false [2023-01-28 05:51:34,122 INFO L130 PetriNetUnfolder]: 608/1334 cut-off events. [2023-01-28 05:51:34,122 INFO L131 PetriNetUnfolder]: For 11637/11637 co-relation queries the response was YES. [2023-01-28 05:51:34,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 1334 events. 608/1334 cut-off events. For 11637/11637 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8690 event pairs, 70 based on Foata normal form. 17/1351 useless extension candidates. Maximal degree in co-relation 8065. Up to 891 conditions per place. [2023-01-28 05:51:34,130 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 188 selfloop transitions, 57 changer transitions 51/296 dead transitions. [2023-01-28 05:51:34,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 296 transitions, 4037 flow [2023-01-28 05:51:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 05:51:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 05:51:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2021 transitions. [2023-01-28 05:51:34,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2029116465863454 [2023-01-28 05:51:34,132 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2021 transitions. [2023-01-28 05:51:34,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2021 transitions. [2023-01-28 05:51:34,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:51:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2021 transitions. [2023-01-28 05:51:34,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 84.20833333333333) internal successors, (2021), 24 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:34,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:34,139 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:34,139 INFO L175 Difference]: Start difference. First operand has 188 places, 229 transitions, 3009 flow. Second operand 24 states and 2021 transitions. [2023-01-28 05:51:34,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 296 transitions, 4037 flow [2023-01-28 05:51:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 296 transitions, 3946 flow, removed 14 selfloop flow, removed 12 redundant places. [2023-01-28 05:51:34,187 INFO L231 Difference]: Finished difference. Result has 203 places, 209 transitions, 2869 flow [2023-01-28 05:51:34,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2869, PETRI_PLACES=203, PETRI_TRANSITIONS=209} [2023-01-28 05:51:34,188 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 182 predicate places. [2023-01-28 05:51:34,188 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 209 transitions, 2869 flow [2023-01-28 05:51:34,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 81.55) internal successors, (1631), 20 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:34,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:51:34,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:51:34,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 05:51:34,393 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,SelfDestructingSolverStorable15 [2023-01-28 05:51:34,394 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 05:51:34,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:51:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -266355903, now seen corresponding path program 8 times [2023-01-28 05:51:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:51:34,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333622697] [2023-01-28 05:51:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:51:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:51:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:51:34,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:51:34,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333622697] [2023-01-28 05:51:34,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333622697] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:51:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603726773] [2023-01-28 05:51:34,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:51:34,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:34,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:51:34,530 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 05:51:34,568 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 05:51:34,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:51:34,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:51:34,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 05:51:34,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:51:34,885 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 05:51:34,887 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 179 treesize of output 165 [2023-01-28 05:51:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:51:34,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:51:35,593 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-01-28 05:51:35,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 42 [2023-01-28 05:51:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:51:35,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603726773] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:51:35,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:51:35,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-01-28 05:51:35,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063210033] [2023-01-28 05:51:35,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:51:35,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 05:51:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:51:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 05:51:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-28 05:51:35,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 415 [2023-01-28 05:51:35,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 209 transitions, 2869 flow. Second operand has 17 states, 17 states have (on average 121.23529411764706) internal successors, (2061), 17 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:35,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:51:35,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 415 [2023-01-28 05:51:35,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:51:39,488 INFO L130 PetriNetUnfolder]: 811/1676 cut-off events. [2023-01-28 05:51:39,488 INFO L131 PetriNetUnfolder]: For 18172/18172 co-relation queries the response was YES. [2023-01-28 05:51:39,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11098 conditions, 1676 events. 811/1676 cut-off events. For 18172/18172 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10872 event pairs, 71 based on Foata normal form. 12/1688 useless extension candidates. Maximal degree in co-relation 11032. Up to 510 conditions per place. [2023-01-28 05:51:39,497 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 220 selfloop transitions, 177 changer transitions 17/414 dead transitions. [2023-01-28 05:51:39,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 414 transitions, 5634 flow [2023-01-28 05:51:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 05:51:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 05:51:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3784 transitions. [2023-01-28 05:51:39,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039357429718875 [2023-01-28 05:51:39,501 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3784 transitions. [2023-01-28 05:51:39,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3784 transitions. [2023-01-28 05:51:39,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:51:39,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3784 transitions. [2023-01-28 05:51:39,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 126.13333333333334) internal successors, (3784), 30 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:39,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 415.0) internal successors, (12865), 31 states have internal predecessors, (12865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:39,510 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 415.0) internal successors, (12865), 31 states have internal predecessors, (12865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:39,510 INFO L175 Difference]: Start difference. First operand has 203 places, 209 transitions, 2869 flow. Second operand 30 states and 3784 transitions. [2023-01-28 05:51:39,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 414 transitions, 5634 flow [2023-01-28 05:51:39,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 414 transitions, 5106 flow, removed 55 selfloop flow, removed 24 redundant places. [2023-01-28 05:51:39,573 INFO L231 Difference]: Finished difference. Result has 207 places, 280 transitions, 4158 flow [2023-01-28 05:51:39,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4158, PETRI_PLACES=207, PETRI_TRANSITIONS=280} [2023-01-28 05:51:39,573 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 186 predicate places. [2023-01-28 05:51:39,573 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 280 transitions, 4158 flow [2023-01-28 05:51:39,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.23529411764706) internal successors, (2061), 17 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:51:39,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:51:39,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:51:39,578 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 05:51:39,778 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,SelfDestructingSolverStorable16 [2023-01-28 05:51:39,779 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 05:51:39,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:51:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1923795003, now seen corresponding path program 9 times [2023-01-28 05:51:39,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:51:39,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786862913] [2023-01-28 05:51:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:51:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:51:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:51:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:51:39,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:51:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786862913] [2023-01-28 05:51:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786862913] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:51:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659035315] [2023-01-28 05:51:39,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:51:39,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:51:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:51:39,935 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 05:51:39,937 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 05:51:40,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:51:40,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:51:40,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 05:51:40,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:51:40,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:40,236 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 179 treesize of output 173 [2023-01-28 05:51:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:51:40,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:51:40,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:51:40,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 139 [2023-01-28 05:58:10,584 WARN L222 SmtUtils]: Spent 6.30m on a formula simplification. DAG size of input: 5890 DAG size of output: 5339 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 06:03:39,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:03:39,274 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 06:03:40,113 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 06:03:40,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 06:03:40,120 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 06:03:40,315 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,SelfDestructingSolverStorable17 [2023-01-28 06:03:40,316 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 48ms.. [2023-01-28 06:03:40,317 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 06:03:40,317 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 06:03:40,318 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1] [2023-01-28 06:03:40,320 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:03:40,320 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:03:40,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:03:40 BasicIcfg [2023-01-28 06:03:40,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:03:40,322 INFO L158 Benchmark]: Toolchain (without parser) took 866854.54ms. Allocated memory was 339.7MB in the beginning and 708.8MB in the end (delta: 369.1MB). Free memory was 308.8MB in the beginning and 336.4MB in the end (delta: -27.5MB). Peak memory consumption was 432.1MB. Max. memory is 16.0GB. [2023-01-28 06:03:40,322 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:03:40,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.64ms. Allocated memory is still 339.7MB. Free memory was 308.8MB in the beginning and 297.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 06:03:40,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.91ms. Allocated memory is still 339.7MB. Free memory was 297.1MB in the beginning and 294.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:03:40,323 INFO L158 Benchmark]: Boogie Preprocessor took 30.67ms. Allocated memory is still 339.7MB. Free memory was 294.9MB in the beginning and 293.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:03:40,323 INFO L158 Benchmark]: RCFGBuilder took 402.12ms. Allocated memory is still 339.7MB. Free memory was 293.3MB in the beginning and 275.3MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 06:03:40,323 INFO L158 Benchmark]: TraceAbstraction took 866149.21ms. Allocated memory was 339.7MB in the beginning and 708.8MB in the end (delta: 369.1MB). Free memory was 274.5MB in the beginning and 336.4MB in the end (delta: -61.9MB). Peak memory consumption was 398.5MB. Max. memory is 16.0GB. [2023-01-28 06:03:40,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 226.64ms. Allocated memory is still 339.7MB. Free memory was 308.8MB in the beginning and 297.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.91ms. Allocated memory is still 339.7MB. Free memory was 297.1MB in the beginning and 294.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.67ms. Allocated memory is still 339.7MB. Free memory was 294.9MB in the beginning and 293.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 402.12ms. Allocated memory is still 339.7MB. Free memory was 293.3MB in the beginning and 275.3MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 866149.21ms. Allocated memory was 339.7MB in the beginning and 708.8MB in the end (delta: 369.1MB). Free memory was 274.5MB in the beginning and 336.4MB in the end (delta: -61.9MB). Peak memory consumption was 398.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 173 PlacesBefore, 21 PlacesAfterwards, 184 TransitionsBefore, 17 TransitionsAfterwards, 4092 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 32 ConcurrentYvCompositions, 15 ChoiceCompositions, 221 TotalNumberOfCompositions, 4038 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3920, independent: 3909, independent conditional: 0, independent unconditional: 3909, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2378, independent: 2373, independent conditional: 0, independent unconditional: 2373, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3920, independent: 1536, independent conditional: 0, independent unconditional: 1536, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 2378, unknown conditional: 0, unknown unconditional: 2378] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 48ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 48ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 48ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 263 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: 866.0s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 76.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 34 mSolverCounterUnknown, 1492 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1492 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 9.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 37 IncrementalHoareTripleChecker+Unchecked, 321 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6156 IncrementalHoareTripleChecker+Invalid, 6580 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 67 mSDtfsCounter, 6156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 680 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 364 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2948 ImplicationChecksByTransitivity, 65.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4158occurred in iteration=17, InterpolantAutomatonStates: 288, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 60.9s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 553 ConstructedInterpolants, 18 QuantifiedInterpolants, 10710 SizeOfPredicates, 268 NumberOfNonLiveVariables, 1643 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 30/75 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 [2023-01-28 06:03:40,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0