/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/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:10:26,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:10:26,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:10:26,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:10:26,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:10:26,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:10:26,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:10:26,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:10:26,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:10:26,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:10:26,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:10:26,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:10:26,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:10:26,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:10:26,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:10:26,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:10:26,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:10:26,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:10:26,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:10:26,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:10:26,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:10:26,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:10:26,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:10:26,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:10:26,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:10:26,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:10:26,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:10:26,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:10:26,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:10:26,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:10:26,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:10:26,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:10:26,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:10:26,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:10:26,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:10:26,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:10:26,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:10:26,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:10:26,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:10:26,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:10:26,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:10:26,190 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 03:10:26,220 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:10:26,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:10:26,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:10:26,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:10:26,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:10:26,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:10:26,222 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:10:26,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:10:26,223 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:10:26,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:10:26,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:10:26,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:10:26,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:10:26,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:10:26,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:10:26,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:10:26,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:10:26,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:10:26,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:10:26,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:10:26,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:10:26,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:10:26,490 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:10:26,490 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:10:26,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-01-28 03:10:27,616 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:10:27,774 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:10:27,775 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-01-28 03:10:27,779 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d9c6802/1f0a56022b00422293e9570c8ec61c0d/FLAG4b1f45cf4 [2023-01-28 03:10:27,793 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d9c6802/1f0a56022b00422293e9570c8ec61c0d [2023-01-28 03:10:27,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:10:27,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:10:27,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:10:27,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:10:27,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:10:27,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:10:27" (1/1) ... [2023-01-28 03:10:27,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3021b104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:27, skipping insertion in model container [2023-01-28 03:10:27,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:10:27" (1/1) ... [2023-01-28 03:10:27,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:10:27,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:10:27,995 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/fibonacci.wvr.c[2330,2343] [2023-01-28 03:10:28,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:10:28,008 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:10:28,036 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/fibonacci.wvr.c[2330,2343] [2023-01-28 03:10:28,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:10:28,051 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:10:28,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28 WrapperNode [2023-01-28 03:10:28,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:10:28,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:10:28,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:10:28,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:10:28,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,083 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 169 [2023-01-28 03:10:28,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:10:28,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:10:28,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:10:28,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:10:28,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:10:28,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:10:28,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:10:28,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:10:28,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (1/1) ... [2023-01-28 03:10:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:10:28,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:28,150 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 03:10:28,179 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 03:10:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:10:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:10:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:10:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:10:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:10:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:10:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:10:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:10:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:10:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:10:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:10:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:10:28,197 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 03:10:28,292 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:10:28,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:10:28,558 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:10:28,572 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:10:28,573 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 03:10:28,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:10:28 BoogieIcfgContainer [2023-01-28 03:10:28,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:10:28,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:10:28,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:10:28,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:10:28,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:10:27" (1/3) ... [2023-01-28 03:10:28,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c1d1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:10:28, skipping insertion in model container [2023-01-28 03:10:28,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:10:28" (2/3) ... [2023-01-28 03:10:28,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c1d1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:10:28, skipping insertion in model container [2023-01-28 03:10:28,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:10:28" (3/3) ... [2023-01-28 03:10:28,585 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-01-28 03:10:28,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:10:28,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:10:28,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:10:28,734 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 03:10:28,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 196 transitions, 408 flow [2023-01-28 03:10:28,863 INFO L130 PetriNetUnfolder]: 14/194 cut-off events. [2023-01-28 03:10:28,863 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:10:28,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 14/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 288 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 119. Up to 2 conditions per place. [2023-01-28 03:10:28,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 196 transitions, 408 flow [2023-01-28 03:10:28,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 186 transitions, 384 flow [2023-01-28 03:10:28,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:10:28,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 186 transitions, 384 flow [2023-01-28 03:10:28,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 186 transitions, 384 flow [2023-01-28 03:10:28,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 186 transitions, 384 flow [2023-01-28 03:10:28,966 INFO L130 PetriNetUnfolder]: 14/186 cut-off events. [2023-01-28 03:10:28,967 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:10:28,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 14/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 250 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 119. Up to 2 conditions per place. [2023-01-28 03:10:28,972 INFO L119 LiptonReduction]: Number of co-enabled transitions 7452 [2023-01-28 03:10:34,250 INFO L134 LiptonReduction]: Checked pairs total: 6342 [2023-01-28 03:10:34,250 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-01-28 03:10:34,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:10:34,269 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;@37eb6b7f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:10:34,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 03:10:34,273 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-01-28 03:10:34,273 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:10:34,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:34,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:34,274 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 03:10:34,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2015475980, now seen corresponding path program 1 times [2023-01-28 03:10:34,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:34,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283213384] [2023-01-28 03:10:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:34,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:34,833 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 03:10:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283213384] [2023-01-28 03:10:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283213384] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:10:34,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:10:34,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:10:34,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745879188] [2023-01-28 03:10:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:10:34,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:10:34,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:10:34,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:10:34,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 412 [2023-01-28 03:10:34,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:34,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:34,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 412 [2023-01-28 03:10:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:35,015 INFO L130 PetriNetUnfolder]: 64/119 cut-off events. [2023-01-28 03:10:35,015 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-28 03:10:35,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 119 events. 64/119 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 334 event pairs, 3 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 181. Up to 85 conditions per place. [2023-01-28 03:10:35,019 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 23 selfloop transitions, 5 changer transitions 5/35 dead transitions. [2023-01-28 03:10:35,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 166 flow [2023-01-28 03:10:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 839 transitions. [2023-01-28 03:10:35,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40728155339805827 [2023-01-28 03:10:35,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 839 transitions. [2023-01-28 03:10:35,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 839 transitions. [2023-01-28 03:10:35,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:35,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 839 transitions. [2023-01-28 03:10:35,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,058 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 5 states and 839 transitions. [2023-01-28 03:10:35,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 166 flow [2023-01-28 03:10:35,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 03:10:35,063 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2023-01-28 03:10:35,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-01-28 03:10:35,067 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-01-28 03:10:35,067 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2023-01-28 03:10:35,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:35,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:35,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:10:35,069 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 03:10:35,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1883585228, now seen corresponding path program 2 times [2023-01-28 03:10:35,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:35,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328308240] [2023-01-28 03:10:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:35,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:35,372 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 03:10:35,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:35,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328308240] [2023-01-28 03:10:35,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328308240] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:10:35,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:10:35,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:10:35,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815672533] [2023-01-28 03:10:35,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:10:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:10:35,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:35,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:10:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:10:35,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 412 [2023-01-28 03:10:35,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:35,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 412 [2023-01-28 03:10:35,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:35,480 INFO L130 PetriNetUnfolder]: 63/111 cut-off events. [2023-01-28 03:10:35,480 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 03:10:35,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 111 events. 63/111 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 283 event pairs, 1 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 316. Up to 85 conditions per place. [2023-01-28 03:10:35,481 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 21 selfloop transitions, 6 changer transitions 5/34 dead transitions. [2023-01-28 03:10:35,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 34 transitions, 176 flow [2023-01-28 03:10:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 837 transitions. [2023-01-28 03:10:35,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40631067961165046 [2023-01-28 03:10:35,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 837 transitions. [2023-01-28 03:10:35,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 837 transitions. [2023-01-28 03:10:35,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:35,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 837 transitions. [2023-01-28 03:10:35,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,492 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 837 transitions. [2023-01-28 03:10:35,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 34 transitions, 176 flow [2023-01-28 03:10:35,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 34 transitions, 174 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 03:10:35,493 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2023-01-28 03:10:35,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-01-28 03:10:35,494 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2023-01-28 03:10:35,494 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2023-01-28 03:10:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:35,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:35,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:10:35,496 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 03:10:35,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1189875957, now seen corresponding path program 1 times [2023-01-28 03:10:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036066807] [2023-01-28 03:10:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:35,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036066807] [2023-01-28 03:10:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036066807] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:10:35,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:10:35,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:10:35,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144092497] [2023-01-28 03:10:35,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:10:35,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:10:35,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:35,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:10:35,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:10:35,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:35,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:35,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:35,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:35,656 INFO L130 PetriNetUnfolder]: 84/157 cut-off events. [2023-01-28 03:10:35,656 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 03:10:35,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 157 events. 84/157 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 477 event pairs, 28 based on Foata normal form. 4/147 useless extension candidates. Maximal degree in co-relation 476. Up to 84 conditions per place. [2023-01-28 03:10:35,659 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 32 selfloop transitions, 6 changer transitions 6/44 dead transitions. [2023-01-28 03:10:35,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 267 flow [2023-01-28 03:10:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 872 transitions. [2023-01-28 03:10:35,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42330097087378643 [2023-01-28 03:10:35,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 872 transitions. [2023-01-28 03:10:35,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 872 transitions. [2023-01-28 03:10:35,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:35,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 872 transitions. [2023-01-28 03:10:35,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,669 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 872 transitions. [2023-01-28 03:10:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 267 flow [2023-01-28 03:10:35,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 253 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:35,673 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 127 flow [2023-01-28 03:10:35,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-01-28 03:10:35,674 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2023-01-28 03:10:35,674 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 127 flow [2023-01-28 03:10:35,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:35,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:35,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:10:35,675 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 03:10:35,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2076972385, now seen corresponding path program 2 times [2023-01-28 03:10:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:35,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886808547] [2023-01-28 03:10:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:35,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:35,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886808547] [2023-01-28 03:10:35,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886808547] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:10:35,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:10:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:10:35,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360503699] [2023-01-28 03:10:35,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:10:35,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:10:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:35,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:10:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:10:35,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:35,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:35,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:35,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:35,841 INFO L130 PetriNetUnfolder]: 102/193 cut-off events. [2023-01-28 03:10:35,842 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-01-28 03:10:35,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 193 events. 102/193 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 588 event pairs, 38 based on Foata normal form. 6/179 useless extension candidates. Maximal degree in co-relation 646. Up to 128 conditions per place. [2023-01-28 03:10:35,843 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 33 selfloop transitions, 9 changer transitions 7/49 dead transitions. [2023-01-28 03:10:35,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 354 flow [2023-01-28 03:10:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:10:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:10:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1043 transitions. [2023-01-28 03:10:35,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42192556634304207 [2023-01-28 03:10:35,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1043 transitions. [2023-01-28 03:10:35,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1043 transitions. [2023-01-28 03:10:35,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:35,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1043 transitions. [2023-01-28 03:10:35,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.83333333333334) internal successors, (1043), 6 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,855 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,858 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 127 flow. Second operand 6 states and 1043 transitions. [2023-01-28 03:10:35,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 354 flow [2023-01-28 03:10:35,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 334 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:35,865 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 186 flow [2023-01-28 03:10:35,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-01-28 03:10:35,866 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2023-01-28 03:10:35,866 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 186 flow [2023-01-28 03:10:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:35,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:35,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:35,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:10:35,867 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 03:10:35,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 993485807, now seen corresponding path program 1 times [2023-01-28 03:10:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099107901] [2023-01-28 03:10:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099107901] [2023-01-28 03:10:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099107901] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595141654] [2023-01-28 03:10:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:35,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:35,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:35,938 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 03:10:35,955 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 03:10:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:36,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:10:36,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:36,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595141654] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:36,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 03:10:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621570514] [2023-01-28 03:10:36,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:36,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 03:10:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 03:10:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:10:36,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:36,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:36,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:36,314 INFO L130 PetriNetUnfolder]: 106/197 cut-off events. [2023-01-28 03:10:36,314 INFO L131 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2023-01-28 03:10:36,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 197 events. 106/197 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 622 event pairs, 20 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 770. Up to 96 conditions per place. [2023-01-28 03:10:36,316 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 43 selfloop transitions, 8 changer transitions 1/52 dead transitions. [2023-01-28 03:10:36,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 400 flow [2023-01-28 03:10:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 875 transitions. [2023-01-28 03:10:36,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42475728155339804 [2023-01-28 03:10:36,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 875 transitions. [2023-01-28 03:10:36,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 875 transitions. [2023-01-28 03:10:36,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:36,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 875 transitions. [2023-01-28 03:10:36,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,324 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 186 flow. Second operand 5 states and 875 transitions. [2023-01-28 03:10:36,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 400 flow [2023-01-28 03:10:36,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 377 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:36,327 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 211 flow [2023-01-28 03:10:36,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-01-28 03:10:36,328 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2023-01-28 03:10:36,328 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 211 flow [2023-01-28 03:10:36,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:36,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:36,342 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 03:10:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:36,535 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 03:10:36,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1800513565, now seen corresponding path program 2 times [2023-01-28 03:10:36,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:36,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847490996] [2023-01-28 03:10:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847490996] [2023-01-28 03:10:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847490996] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723106960] [2023-01-28 03:10:36,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:10:36,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:36,593 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 03:10:36,596 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 03:10:36,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:36,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:36,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:10:36,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:36,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:36,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723106960] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:36,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:10:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672885449] [2023-01-28 03:10:36,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:36,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:10:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:10:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:10:36,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:36,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 211 flow. Second operand has 10 states, 10 states have (on average 169.3) internal successors, (1693), 10 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:36,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:36,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:36,915 INFO L130 PetriNetUnfolder]: 124/235 cut-off events. [2023-01-28 03:10:36,915 INFO L131 PetriNetUnfolder]: For 564/564 co-relation queries the response was YES. [2023-01-28 03:10:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 235 events. 124/235 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 806 event pairs, 16 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 773. Up to 104 conditions per place. [2023-01-28 03:10:36,917 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 54 selfloop transitions, 15 changer transitions 2/71 dead transitions. [2023-01-28 03:10:36,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 537 flow [2023-01-28 03:10:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:10:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:10:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1397 transitions. [2023-01-28 03:10:36,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238470873786408 [2023-01-28 03:10:36,921 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1397 transitions. [2023-01-28 03:10:36,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1397 transitions. [2023-01-28 03:10:36,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:36,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1397 transitions. [2023-01-28 03:10:36,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 174.625) internal successors, (1397), 8 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,929 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 211 flow. Second operand 8 states and 1397 transitions. [2023-01-28 03:10:36,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 537 flow [2023-01-28 03:10:36,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:36,933 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 302 flow [2023-01-28 03:10:36,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-01-28 03:10:36,933 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2023-01-28 03:10:36,934 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 302 flow [2023-01-28 03:10:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.3) internal successors, (1693), 10 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:36,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:36,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:36,944 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 03:10:37,140 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,SelfDestructingSolverStorable5 [2023-01-28 03:10:37,141 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 03:10:37,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 113238829, now seen corresponding path program 3 times [2023-01-28 03:10:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985138489] [2023-01-28 03:10:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:37,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:37,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985138489] [2023-01-28 03:10:37,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985138489] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29902126] [2023-01-28 03:10:37,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:10:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:37,204 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 03:10:37,206 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 03:10:37,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:10:37,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:37,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:10:37,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:37,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:37,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29902126] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:37,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:37,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 03:10:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381259278] [2023-01-28 03:10:37,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:37,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 03:10:37,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 03:10:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:10:37,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:37,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:37,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:37,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:37,429 INFO L130 PetriNetUnfolder]: 130/245 cut-off events. [2023-01-28 03:10:37,429 INFO L131 PetriNetUnfolder]: For 761/761 co-relation queries the response was YES. [2023-01-28 03:10:37,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 245 events. 130/245 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 847 event pairs, 16 based on Foata normal form. 4/233 useless extension candidates. Maximal degree in co-relation 855. Up to 104 conditions per place. [2023-01-28 03:10:37,432 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 40 selfloop transitions, 13 changer transitions 1/54 dead transitions. [2023-01-28 03:10:37,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 505 flow [2023-01-28 03:10:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 871 transitions. [2023-01-28 03:10:37,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228155339805825 [2023-01-28 03:10:37,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 871 transitions. [2023-01-28 03:10:37,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 871 transitions. [2023-01-28 03:10:37,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:37,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 871 transitions. [2023-01-28 03:10:37,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.2) internal successors, (871), 5 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,440 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 302 flow. Second operand 5 states and 871 transitions. [2023-01-28 03:10:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 505 flow [2023-01-28 03:10:37,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 482 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 03:10:37,444 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 343 flow [2023-01-28 03:10:37,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-01-28 03:10:37,445 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 33 predicate places. [2023-01-28 03:10:37,445 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 343 flow [2023-01-28 03:10:37,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:37,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:37,455 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 03:10:37,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:37,652 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 03:10:37,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1270574027, now seen corresponding path program 3 times [2023-01-28 03:10:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:37,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158018238] [2023-01-28 03:10:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:37,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:37,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158018238] [2023-01-28 03:10:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158018238] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:10:37,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:10:37,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:10:37,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17145911] [2023-01-28 03:10:37,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:10:37,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:10:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:37,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:10:37,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:10:37,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:37,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:37,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:37,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:37,791 INFO L130 PetriNetUnfolder]: 122/229 cut-off events. [2023-01-28 03:10:37,792 INFO L131 PetriNetUnfolder]: For 936/936 co-relation queries the response was YES. [2023-01-28 03:10:37,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 229 events. 122/229 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 763 event pairs, 40 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 921. Up to 160 conditions per place. [2023-01-28 03:10:37,794 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 36 selfloop transitions, 11 changer transitions 9/56 dead transitions. [2023-01-28 03:10:37,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 512 flow [2023-01-28 03:10:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:10:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:10:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1044 transitions. [2023-01-28 03:10:37,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-01-28 03:10:37,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1044 transitions. [2023-01-28 03:10:37,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1044 transitions. [2023-01-28 03:10:37,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:37,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1044 transitions. [2023-01-28 03:10:37,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,803 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 343 flow. Second operand 6 states and 1044 transitions. [2023-01-28 03:10:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 512 flow [2023-01-28 03:10:37,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 495 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:37,808 INFO L231 Difference]: Finished difference. Result has 56 places, 34 transitions, 296 flow [2023-01-28 03:10:37,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=56, PETRI_TRANSITIONS=34} [2023-01-28 03:10:37,808 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 36 predicate places. [2023-01-28 03:10:37,808 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 34 transitions, 296 flow [2023-01-28 03:10:37,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:37,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:37,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:37,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 03:10:37,809 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 03:10:37,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:37,810 INFO L85 PathProgramCache]: Analyzing trace with hash -691740739, now seen corresponding path program 4 times [2023-01-28 03:10:37,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:37,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46530650] [2023-01-28 03:10:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46530650] [2023-01-28 03:10:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46530650] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948290194] [2023-01-28 03:10:37,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:10:37,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:37,876 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 03:10:37,901 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 03:10:37,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:10:37,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:10:37,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:38,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948290194] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:38,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:38,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:10:38,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501677963] [2023-01-28 03:10:38,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:38,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:10:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:10:38,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:10:38,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:38,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 34 transitions, 296 flow. Second operand has 10 states, 10 states have (on average 169.3) internal successors, (1693), 10 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:38,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:38,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:38,183 INFO L130 PetriNetUnfolder]: 122/219 cut-off events. [2023-01-28 03:10:38,184 INFO L131 PetriNetUnfolder]: For 783/783 co-relation queries the response was YES. [2023-01-28 03:10:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 219 events. 122/219 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 669 event pairs, 43 based on Foata normal form. 4/205 useless extension candidates. Maximal degree in co-relation 985. Up to 161 conditions per place. [2023-01-28 03:10:38,186 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 37 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2023-01-28 03:10:38,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 449 flow [2023-01-28 03:10:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 870 transitions. [2023-01-28 03:10:38,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-01-28 03:10:38,189 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 870 transitions. [2023-01-28 03:10:38,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 870 transitions. [2023-01-28 03:10:38,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:38,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 870 transitions. [2023-01-28 03:10:38,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,194 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,194 INFO L175 Difference]: Start difference. First operand has 56 places, 34 transitions, 296 flow. Second operand 5 states and 870 transitions. [2023-01-28 03:10:38,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 449 flow [2023-01-28 03:10:38,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 400 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-01-28 03:10:38,198 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 285 flow [2023-01-28 03:10:38,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-01-28 03:10:38,199 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2023-01-28 03:10:38,199 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 285 flow [2023-01-28 03:10:38,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.3) internal successors, (1693), 10 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:38,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:38,211 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 03:10:38,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:38,406 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 03:10:38,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -935224503, now seen corresponding path program 4 times [2023-01-28 03:10:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790820732] [2023-01-28 03:10:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:38,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790820732] [2023-01-28 03:10:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790820732] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167184496] [2023-01-28 03:10:38,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:10:38,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:38,460 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 03:10:38,480 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 03:10:38,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:10:38,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:38,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:10:38,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:38,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:38,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167184496] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:38,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:38,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:10:38,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76706887] [2023-01-28 03:10:38,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:38,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:10:38,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:10:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:10:38,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:38,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 169.3) internal successors, (1693), 10 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:38,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:38,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:38,701 INFO L130 PetriNetUnfolder]: 114/203 cut-off events. [2023-01-28 03:10:38,701 INFO L131 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2023-01-28 03:10:38,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 203 events. 114/203 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 589 event pairs, 37 based on Foata normal form. 6/191 useless extension candidates. Maximal degree in co-relation 900. Up to 153 conditions per place. [2023-01-28 03:10:38,703 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 33 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2023-01-28 03:10:38,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 408 flow [2023-01-28 03:10:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:10:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:10:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 867 transitions. [2023-01-28 03:10:38,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420873786407767 [2023-01-28 03:10:38,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 867 transitions. [2023-01-28 03:10:38,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 867 transitions. [2023-01-28 03:10:38,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:38,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 867 transitions. [2023-01-28 03:10:38,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.4) internal successors, (867), 5 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,711 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 285 flow. Second operand 5 states and 867 transitions. [2023-01-28 03:10:38,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 408 flow [2023-01-28 03:10:38,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 392 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:38,716 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 282 flow [2023-01-28 03:10:38,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2023-01-28 03:10:38,717 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 32 predicate places. [2023-01-28 03:10:38,717 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 282 flow [2023-01-28 03:10:38,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.3) internal successors, (1693), 10 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:38,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:38,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:38,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:38,930 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,SelfDestructingSolverStorable9 [2023-01-28 03:10:38,930 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 03:10:38,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash 899158593, now seen corresponding path program 5 times [2023-01-28 03:10:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414030955] [2023-01-28 03:10:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414030955] [2023-01-28 03:10:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414030955] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698554899] [2023-01-28 03:10:39,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:10:39,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:39,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:39,019 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 03:10:39,031 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 03:10:39,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:39,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:39,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:10:39,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:39,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698554899] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:39,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:39,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:10:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540560280] [2023-01-28 03:10:39,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:10:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:10:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:10:39,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:39,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 169.5) internal successors, (1695), 10 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:39,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:39,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:39,281 INFO L130 PetriNetUnfolder]: 110/193 cut-off events. [2023-01-28 03:10:39,281 INFO L131 PetriNetUnfolder]: For 573/573 co-relation queries the response was YES. [2023-01-28 03:10:39,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 193 events. 110/193 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 569 event pairs, 9 based on Foata normal form. 4/181 useless extension candidates. Maximal degree in co-relation 878. Up to 86 conditions per place. [2023-01-28 03:10:39,283 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 37 selfloop transitions, 17 changer transitions 0/54 dead transitions. [2023-01-28 03:10:39,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 474 flow [2023-01-28 03:10:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:10:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:10:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1380 transitions. [2023-01-28 03:10:39,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186893203883495 [2023-01-28 03:10:39,287 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1380 transitions. [2023-01-28 03:10:39,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1380 transitions. [2023-01-28 03:10:39,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:39,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1380 transitions. [2023-01-28 03:10:39,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.5) internal successors, (1380), 8 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:39,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:39,294 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:39,294 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 282 flow. Second operand 8 states and 1380 transitions. [2023-01-28 03:10:39,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 474 flow [2023-01-28 03:10:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 426 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-01-28 03:10:39,297 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 277 flow [2023-01-28 03:10:39,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-01-28 03:10:39,298 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2023-01-28 03:10:39,298 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 277 flow [2023-01-28 03:10:39,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.5) internal successors, (1695), 10 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:39,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:39,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:39,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 03:10:39,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:39,504 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 03:10:39,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash -538177452, now seen corresponding path program 1 times [2023-01-28 03:10:39,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622761780] [2023-01-28 03:10:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:39,795 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 03:10:39,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:39,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622761780] [2023-01-28 03:10:39,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622761780] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:39,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415569488] [2023-01-28 03:10:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:39,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:39,797 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 03:10:39,826 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 03:10:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:39,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 03:10:39,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:40,024 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 03:10:40,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:40,194 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 03:10:40,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415569488] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:40,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:10:40,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712583626] [2023-01-28 03:10:40,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:40,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:40,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:10:40,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 277 flow. Second operand has 12 states, 12 states have (on average 157.5) internal successors, (1890), 12 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:40,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:40,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:10:40,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:40,404 INFO L130 PetriNetUnfolder]: 132/238 cut-off events. [2023-01-28 03:10:40,405 INFO L131 PetriNetUnfolder]: For 578/598 co-relation queries the response was YES. [2023-01-28 03:10:40,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 238 events. 132/238 cut-off events. For 578/598 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 814 event pairs, 6 based on Foata normal form. 11/242 useless extension candidates. Maximal degree in co-relation 1030. Up to 167 conditions per place. [2023-01-28 03:10:40,407 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 36 selfloop transitions, 17 changer transitions 5/64 dead transitions. [2023-01-28 03:10:40,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 519 flow [2023-01-28 03:10:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1125 transitions. [2023-01-28 03:10:40,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39008321775312066 [2023-01-28 03:10:40,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1125 transitions. [2023-01-28 03:10:40,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1125 transitions. [2023-01-28 03:10:40,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:40,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1125 transitions. [2023-01-28 03:10:40,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:40,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:40,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:40,416 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 277 flow. Second operand 7 states and 1125 transitions. [2023-01-28 03:10:40,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 519 flow [2023-01-28 03:10:40,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 470 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-01-28 03:10:40,420 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 370 flow [2023-01-28 03:10:40,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-01-28 03:10:40,420 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 34 predicate places. [2023-01-28 03:10:40,420 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 370 flow [2023-01-28 03:10:40,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.5) internal successors, (1890), 12 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:40,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:40,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:40,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 03:10:40,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:40,627 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 03:10:40,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1242983908, now seen corresponding path program 2 times [2023-01-28 03:10:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:40,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83305370] [2023-01-28 03:10:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:40,894 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 03:10:40,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:40,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83305370] [2023-01-28 03:10:40,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83305370] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:40,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966473319] [2023-01-28 03:10:40,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:10:40,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:40,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:40,896 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 03:10:40,924 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 03:10:40,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:40,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:40,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 03:10:40,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:41,094 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 03:10:41,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:41,267 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 03:10:41,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966473319] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:41,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:41,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 03:10:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234095456] [2023-01-28 03:10:41,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:41,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:10:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:10:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:10:41,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:10:41,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 370 flow. Second operand has 14 states, 14 states have (on average 157.42857142857142) internal successors, (2204), 14 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:41,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:41,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:10:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:41,448 INFO L130 PetriNetUnfolder]: 144/264 cut-off events. [2023-01-28 03:10:41,449 INFO L131 PetriNetUnfolder]: For 828/858 co-relation queries the response was YES. [2023-01-28 03:10:41,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 264 events. 144/264 cut-off events. For 828/858 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 950 event pairs, 8 based on Foata normal form. 11/268 useless extension candidates. Maximal degree in co-relation 1222. Up to 171 conditions per place. [2023-01-28 03:10:41,451 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 40 selfloop transitions, 20 changer transitions 5/71 dead transitions. [2023-01-28 03:10:41,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 604 flow [2023-01-28 03:10:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1130 transitions. [2023-01-28 03:10:41,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39181692094313453 [2023-01-28 03:10:41,455 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1130 transitions. [2023-01-28 03:10:41,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1130 transitions. [2023-01-28 03:10:41,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:41,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1130 transitions. [2023-01-28 03:10:41,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:41,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:41,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:41,462 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 370 flow. Second operand 7 states and 1130 transitions. [2023-01-28 03:10:41,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 604 flow [2023-01-28 03:10:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 571 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:41,467 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 439 flow [2023-01-28 03:10:41,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-01-28 03:10:41,467 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 40 predicate places. [2023-01-28 03:10:41,467 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 439 flow [2023-01-28 03:10:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.42857142857142) internal successors, (2204), 14 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:41,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:41,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:41,479 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 03:10:41,674 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,SelfDestructingSolverStorable12 [2023-01-28 03:10:41,674 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 03:10:41,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:41,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1215278278, now seen corresponding path program 3 times [2023-01-28 03:10:41,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:41,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677752218] [2023-01-28 03:10:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:41,941 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 03:10:41,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:41,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677752218] [2023-01-28 03:10:41,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677752218] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:41,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464067261] [2023-01-28 03:10:41,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:10:41,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:41,943 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 03:10:41,946 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 03:10:42,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:10:42,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:42,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 03:10:42,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:42,121 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 03:10:42,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:42,253 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 03:10:42,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464067261] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:42,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:42,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:10:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255349201] [2023-01-28 03:10:42,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:42,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:42,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:42,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:42,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:42,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:10:42,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 439 flow. Second operand has 12 states, 12 states have (on average 157.66666666666666) internal successors, (1892), 12 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:42,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:42,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:10:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:42,448 INFO L130 PetriNetUnfolder]: 141/255 cut-off events. [2023-01-28 03:10:42,448 INFO L131 PetriNetUnfolder]: For 1187/1213 co-relation queries the response was YES. [2023-01-28 03:10:42,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 255 events. 141/255 cut-off events. For 1187/1213 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 900 event pairs, 8 based on Foata normal form. 9/257 useless extension candidates. Maximal degree in co-relation 1269. Up to 171 conditions per place. [2023-01-28 03:10:42,450 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 36 selfloop transitions, 21 changer transitions 5/68 dead transitions. [2023-01-28 03:10:42,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 636 flow [2023-01-28 03:10:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1126 transitions. [2023-01-28 03:10:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39042995839112343 [2023-01-28 03:10:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1126 transitions. [2023-01-28 03:10:42,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1126 transitions. [2023-01-28 03:10:42,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:42,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1126 transitions. [2023-01-28 03:10:42,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.85714285714286) internal successors, (1126), 7 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:42,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:42,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:42,460 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 439 flow. Second operand 7 states and 1126 transitions. [2023-01-28 03:10:42,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 636 flow [2023-01-28 03:10:42,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 578 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-01-28 03:10:42,465 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 471 flow [2023-01-28 03:10:42,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2023-01-28 03:10:42,465 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 45 predicate places. [2023-01-28 03:10:42,465 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 471 flow [2023-01-28 03:10:42,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.66666666666666) internal successors, (1892), 12 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:42,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:42,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:42,473 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 03:10:42,672 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,SelfDestructingSolverStorable13 [2023-01-28 03:10:42,672 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 03:10:42,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1742862228, now seen corresponding path program 4 times [2023-01-28 03:10:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930325152] [2023-01-28 03:10:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:43,006 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 03:10:43,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:43,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930325152] [2023-01-28 03:10:43,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930325152] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:43,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312361847] [2023-01-28 03:10:43,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:10:43,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:43,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:43,008 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 03:10:43,035 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 03:10:43,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:10:43,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:43,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 03:10:43,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:43,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:43,354 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 03:10:43,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312361847] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:43,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:43,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 03:10:43,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823713686] [2023-01-28 03:10:43,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:43,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:10:43,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:10:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:10:43,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:10:43,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 471 flow. Second operand has 10 states, 10 states have (on average 157.5) internal successors, (1575), 10 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:43,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:43,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:10:43,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:43,521 INFO L130 PetriNetUnfolder]: 166/298 cut-off events. [2023-01-28 03:10:43,521 INFO L131 PetriNetUnfolder]: For 1428/1454 co-relation queries the response was YES. [2023-01-28 03:10:43,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 298 events. 166/298 cut-off events. For 1428/1454 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1112 event pairs, 10 based on Foata normal form. 9/300 useless extension candidates. Maximal degree in co-relation 1533. Up to 244 conditions per place. [2023-01-28 03:10:43,524 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 44 selfloop transitions, 17 changer transitions 5/72 dead transitions. [2023-01-28 03:10:43,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 723 flow [2023-01-28 03:10:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1117 transitions. [2023-01-28 03:10:43,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38730929264909847 [2023-01-28 03:10:43,527 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1117 transitions. [2023-01-28 03:10:43,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1117 transitions. [2023-01-28 03:10:43,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:43,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1117 transitions. [2023-01-28 03:10:43,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.57142857142858) internal successors, (1117), 7 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:43,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:43,533 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:43,533 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 471 flow. Second operand 7 states and 1117 transitions. [2023-01-28 03:10:43,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 723 flow [2023-01-28 03:10:43,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 674 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-28 03:10:43,541 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 574 flow [2023-01-28 03:10:43,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=574, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-01-28 03:10:43,542 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2023-01-28 03:10:43,542 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 574 flow [2023-01-28 03:10:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 157.5) internal successors, (1575), 10 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:43,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:43,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:43,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:43,748 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,SelfDestructingSolverStorable14 [2023-01-28 03:10:43,748 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 03:10:43,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash -433241830, now seen corresponding path program 5 times [2023-01-28 03:10:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:43,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004678852] [2023-01-28 03:10:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:44,018 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 03:10:44,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:44,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004678852] [2023-01-28 03:10:44,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004678852] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:44,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599381804] [2023-01-28 03:10:44,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:10:44,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:44,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:44,021 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 03:10:44,024 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 03:10:44,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:10:44,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 03:10:44,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:44,210 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 03:10:44,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:44,348 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 03:10:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599381804] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:44,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 03:10:44,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474913654] [2023-01-28 03:10:44,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:44,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:10:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:10:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:10:44,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:10:44,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 574 flow. Second operand has 14 states, 14 states have (on average 157.42857142857142) internal successors, (2204), 14 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:44,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:44,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:10:44,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:44,543 INFO L130 PetriNetUnfolder]: 180/326 cut-off events. [2023-01-28 03:10:44,543 INFO L131 PetriNetUnfolder]: For 1850/1876 co-relation queries the response was YES. [2023-01-28 03:10:44,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 326 events. 180/326 cut-off events. For 1850/1876 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1257 event pairs, 14 based on Foata normal form. 9/328 useless extension candidates. Maximal degree in co-relation 1754. Up to 248 conditions per place. [2023-01-28 03:10:44,546 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 50 selfloop transitions, 20 changer transitions 5/81 dead transitions. [2023-01-28 03:10:44,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 837 flow [2023-01-28 03:10:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1124 transitions. [2023-01-28 03:10:44,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897364771151179 [2023-01-28 03:10:44,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1124 transitions. [2023-01-28 03:10:44,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1124 transitions. [2023-01-28 03:10:44,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:44,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1124 transitions. [2023-01-28 03:10:44,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.57142857142858) internal successors, (1124), 7 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:44,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:44,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:44,556 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 574 flow. Second operand 7 states and 1124 transitions. [2023-01-28 03:10:44,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 837 flow [2023-01-28 03:10:44,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 796 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:44,562 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 651 flow [2023-01-28 03:10:44,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=651, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-01-28 03:10:44,562 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-01-28 03:10:44,563 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 651 flow [2023-01-28 03:10:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.42857142857142) internal successors, (2204), 14 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:44,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:44,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:44,569 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 03:10:44,769 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,SelfDestructingSolverStorable15 [2023-01-28 03:10:44,769 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 03:10:44,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash -405536200, now seen corresponding path program 6 times [2023-01-28 03:10:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955444137] [2023-01-28 03:10:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:45,068 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 03:10:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955444137] [2023-01-28 03:10:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955444137] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563935398] [2023-01-28 03:10:45,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:10:45,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:45,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:45,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:45,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 03:10:45,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:10:45,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:45,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 03:10:45,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:45,250 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 03:10:45,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:45,379 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 03:10:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563935398] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:45,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:45,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 03:10:45,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377759450] [2023-01-28 03:10:45,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:45,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:10:45,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:45,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:10:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:10:45,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:10:45,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 651 flow. Second operand has 14 states, 14 states have (on average 157.42857142857142) internal successors, (2204), 14 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:45,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:45,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:10:45,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:45,550 INFO L130 PetriNetUnfolder]: 177/317 cut-off events. [2023-01-28 03:10:45,550 INFO L131 PetriNetUnfolder]: For 2219/2245 co-relation queries the response was YES. [2023-01-28 03:10:45,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 317 events. 177/317 cut-off events. For 2219/2245 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1211 event pairs, 14 based on Foata normal form. 9/319 useless extension candidates. Maximal degree in co-relation 1777. Up to 248 conditions per place. [2023-01-28 03:10:45,553 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 48 selfloop transitions, 21 changer transitions 5/80 dead transitions. [2023-01-28 03:10:45,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 874 flow [2023-01-28 03:10:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1122 transitions. [2023-01-28 03:10:45,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38904299583911234 [2023-01-28 03:10:45,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1122 transitions. [2023-01-28 03:10:45,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1122 transitions. [2023-01-28 03:10:45,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:45,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1122 transitions. [2023-01-28 03:10:45,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.28571428571428) internal successors, (1122), 7 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:45,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:45,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:45,564 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 651 flow. Second operand 7 states and 1122 transitions. [2023-01-28 03:10:45,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 874 flow [2023-01-28 03:10:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 794 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-01-28 03:10:45,571 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 671 flow [2023-01-28 03:10:45,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2023-01-28 03:10:45,571 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2023-01-28 03:10:45,571 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 671 flow [2023-01-28 03:10:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.42857142857142) internal successors, (2204), 14 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:45,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:45,572 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:45,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:45,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 03:10:45,779 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 03:10:45,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash -292778433, now seen corresponding path program 7 times [2023-01-28 03:10:45,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:45,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996769709] [2023-01-28 03:10:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:45,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996769709] [2023-01-28 03:10:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996769709] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33989606] [2023-01-28 03:10:45,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:10:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:45,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:45,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 03:10:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:45,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:45,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:45,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33989606] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:46,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:46,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 03:10:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89523102] [2023-01-28 03:10:46,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:46,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:10:46,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:10:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:10:46,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:46,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 671 flow. Second operand has 11 states, 11 states have (on average 169.1818181818182) internal successors, (1861), 11 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:46,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:46,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:46,213 INFO L130 PetriNetUnfolder]: 228/403 cut-off events. [2023-01-28 03:10:46,213 INFO L131 PetriNetUnfolder]: For 2406/2406 co-relation queries the response was YES. [2023-01-28 03:10:46,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 403 events. 228/403 cut-off events. For 2406/2406 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1569 event pairs, 15 based on Foata normal form. 6/409 useless extension candidates. Maximal degree in co-relation 2221. Up to 154 conditions per place. [2023-01-28 03:10:46,217 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 75 selfloop transitions, 28 changer transitions 0/103 dead transitions. [2023-01-28 03:10:46,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 1146 flow [2023-01-28 03:10:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:10:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:10:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1222 transitions. [2023-01-28 03:10:46,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237170596393897 [2023-01-28 03:10:46,219 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1222 transitions. [2023-01-28 03:10:46,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1222 transitions. [2023-01-28 03:10:46,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:46,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1222 transitions. [2023-01-28 03:10:46,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.57142857142858) internal successors, (1222), 7 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,224 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 671 flow. Second operand 7 states and 1222 transitions. [2023-01-28 03:10:46,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 1146 flow [2023-01-28 03:10:46,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 103 transitions, 1081 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-01-28 03:10:46,234 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 764 flow [2023-01-28 03:10:46,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=764, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2023-01-28 03:10:46,234 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2023-01-28 03:10:46,235 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 764 flow [2023-01-28 03:10:46,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.1818181818182) internal successors, (1861), 11 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:46,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:46,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:46,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 03:10:46,441 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:46,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash 588770887, now seen corresponding path program 8 times [2023-01-28 03:10:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:46,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941620303] [2023-01-28 03:10:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941620303] [2023-01-28 03:10:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941620303] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:46,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326637191] [2023-01-28 03:10:46,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:10:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:46,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:46,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 03:10:46,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:46,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:46,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:46,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326637191] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:46,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 03:10:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021031128] [2023-01-28 03:10:46,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:46,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:10:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:10:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:10:46,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:46,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 764 flow. Second operand has 11 states, 11 states have (on average 169.36363636363637) internal successors, (1863), 11 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:46,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:46,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:46,915 INFO L130 PetriNetUnfolder]: 230/413 cut-off events. [2023-01-28 03:10:46,915 INFO L131 PetriNetUnfolder]: For 3259/3259 co-relation queries the response was YES. [2023-01-28 03:10:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 413 events. 230/413 cut-off events. For 3259/3259 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1669 event pairs, 35 based on Foata normal form. 4/417 useless extension candidates. Maximal degree in co-relation 2400. Up to 153 conditions per place. [2023-01-28 03:10:46,919 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 65 selfloop transitions, 43 changer transitions 10/118 dead transitions. [2023-01-28 03:10:46,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 1335 flow [2023-01-28 03:10:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:10:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:10:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1899 transitions. [2023-01-28 03:10:46,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41902030008826124 [2023-01-28 03:10:46,923 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1899 transitions. [2023-01-28 03:10:46,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1899 transitions. [2023-01-28 03:10:46,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:46,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1899 transitions. [2023-01-28 03:10:46,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 172.63636363636363) internal successors, (1899), 11 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,933 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,934 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 764 flow. Second operand 11 states and 1899 transitions. [2023-01-28 03:10:46,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 1335 flow [2023-01-28 03:10:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 1288 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 03:10:46,949 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 1012 flow [2023-01-28 03:10:46,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1012, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2023-01-28 03:10:46,949 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 78 predicate places. [2023-01-28 03:10:46,950 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 1012 flow [2023-01-28 03:10:46,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.36363636363637) internal successors, (1863), 11 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:46,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:46,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:46,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 03:10:47,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:47,157 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:47,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 84514537, now seen corresponding path program 9 times [2023-01-28 03:10:47,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:47,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711308885] [2023-01-28 03:10:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:47,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:47,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711308885] [2023-01-28 03:10:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711308885] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709092643] [2023-01-28 03:10:47,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:10:47,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:47,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:47,233 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:47,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 03:10:47,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:10:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:47,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709092643] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:47,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:47,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 03:10:47,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583519518] [2023-01-28 03:10:47,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:47,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:10:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:10:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:10:47,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:47,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 1012 flow. Second operand has 13 states, 13 states have (on average 169.15384615384616) internal successors, (2199), 13 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:47,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:47,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:47,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:47,709 INFO L130 PetriNetUnfolder]: 265/492 cut-off events. [2023-01-28 03:10:47,710 INFO L131 PetriNetUnfolder]: For 4464/4464 co-relation queries the response was YES. [2023-01-28 03:10:47,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 492 events. 265/492 cut-off events. For 4464/4464 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2134 event pairs, 37 based on Foata normal form. 8/500 useless extension candidates. Maximal degree in co-relation 3028. Up to 159 conditions per place. [2023-01-28 03:10:47,714 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 91 selfloop transitions, 64 changer transitions 6/161 dead transitions. [2023-01-28 03:10:47,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 161 transitions, 1910 flow [2023-01-28 03:10:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 03:10:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 03:10:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3102 transitions. [2023-01-28 03:10:47,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41828478964401294 [2023-01-28 03:10:47,719 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3102 transitions. [2023-01-28 03:10:47,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3102 transitions. [2023-01-28 03:10:47,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:47,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3102 transitions. [2023-01-28 03:10:47,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 172.33333333333334) internal successors, (3102), 18 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:47,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:47,733 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:47,733 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 1012 flow. Second operand 18 states and 3102 transitions. [2023-01-28 03:10:47,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 161 transitions, 1910 flow [2023-01-28 03:10:47,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 161 transitions, 1767 flow, removed 45 selfloop flow, removed 8 redundant places. [2023-01-28 03:10:47,749 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 1356 flow [2023-01-28 03:10:47,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1356, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2023-01-28 03:10:47,749 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 91 predicate places. [2023-01-28 03:10:47,750 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 1356 flow [2023-01-28 03:10:47,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.15384615384616) internal successors, (2199), 13 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:47,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:47,750 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:47,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:47,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:47,956 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:47,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1635873767, now seen corresponding path program 10 times [2023-01-28 03:10:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:47,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425533730] [2023-01-28 03:10:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:47,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:48,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425533730] [2023-01-28 03:10:48,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425533730] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:48,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688327876] [2023-01-28 03:10:48,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:10:48,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:48,025 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:48,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 03:10:48,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:10:48,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:48,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:48,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:48,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:48,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688327876] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:48,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:48,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:10:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708288484] [2023-01-28 03:10:48,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:48,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:48,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 1356 flow. Second operand has 12 states, 12 states have (on average 169.33333333333334) internal successors, (2032), 12 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:48,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:48,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:48,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:48,550 INFO L130 PetriNetUnfolder]: 316/591 cut-off events. [2023-01-28 03:10:48,551 INFO L131 PetriNetUnfolder]: For 6497/6497 co-relation queries the response was YES. [2023-01-28 03:10:48,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 591 events. 316/591 cut-off events. For 6497/6497 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2656 event pairs, 19 based on Foata normal form. 18/609 useless extension candidates. Maximal degree in co-relation 3866. Up to 303 conditions per place. [2023-01-28 03:10:48,557 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 119 selfloop transitions, 50 changer transitions 0/169 dead transitions. [2023-01-28 03:10:48,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 169 transitions, 2245 flow [2023-01-28 03:10:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:10:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:10:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2431 transitions. [2023-01-28 03:10:48,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214632454923717 [2023-01-28 03:10:48,561 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2431 transitions. [2023-01-28 03:10:48,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2431 transitions. [2023-01-28 03:10:48,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:48,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2431 transitions. [2023-01-28 03:10:48,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.64285714285714) internal successors, (2431), 14 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:48,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:48,572 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:48,573 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 1356 flow. Second operand 14 states and 2431 transitions. [2023-01-28 03:10:48,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 169 transitions, 2245 flow [2023-01-28 03:10:48,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 169 transitions, 2079 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-01-28 03:10:48,595 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 1586 flow [2023-01-28 03:10:48,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1586, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2023-01-28 03:10:48,595 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 100 predicate places. [2023-01-28 03:10:48,595 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 1586 flow [2023-01-28 03:10:48,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.33333333333334) internal successors, (2032), 12 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:48,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:48,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:48,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:48,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:48,805 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:48,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1629563245, now seen corresponding path program 11 times [2023-01-28 03:10:48,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:48,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308639762] [2023-01-28 03:10:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:48,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:48,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308639762] [2023-01-28 03:10:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308639762] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534510391] [2023-01-28 03:10:48,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:10:48,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:48,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:48,868 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:48,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 03:10:48,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:10:48,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:48,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:49,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534510391] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:49,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:10:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298282732] [2023-01-28 03:10:49,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:49,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:49,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:49,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 1586 flow. Second operand has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:49,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:49,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:49,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:49,350 INFO L130 PetriNetUnfolder]: 391/758 cut-off events. [2023-01-28 03:10:49,350 INFO L131 PetriNetUnfolder]: For 10396/10396 co-relation queries the response was YES. [2023-01-28 03:10:49,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 758 events. 391/758 cut-off events. For 10396/10396 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3764 event pairs, 81 based on Foata normal form. 8/766 useless extension candidates. Maximal degree in co-relation 5438. Up to 329 conditions per place. [2023-01-28 03:10:49,359 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 116 selfloop transitions, 62 changer transitions 0/178 dead transitions. [2023-01-28 03:10:49,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 178 transitions, 2519 flow [2023-01-28 03:10:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:10:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:10:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2262 transitions. [2023-01-28 03:10:49,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-01-28 03:10:49,362 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2262 transitions. [2023-01-28 03:10:49,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2262 transitions. [2023-01-28 03:10:49,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:49,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2262 transitions. [2023-01-28 03:10:49,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 174.0) internal successors, (2262), 13 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:49,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:49,371 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:49,371 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 1586 flow. Second operand 13 states and 2262 transitions. [2023-01-28 03:10:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 178 transitions, 2519 flow [2023-01-28 03:10:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 178 transitions, 2287 flow, removed 96 selfloop flow, removed 5 redundant places. [2023-01-28 03:10:49,404 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1857 flow [2023-01-28 03:10:49,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1857, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2023-01-28 03:10:49,405 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 113 predicate places. [2023-01-28 03:10:49,405 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1857 flow [2023-01-28 03:10:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:49,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:49,406 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:49,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-01-28 03:10:49,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:49,612 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:49,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:49,613 INFO L85 PathProgramCache]: Analyzing trace with hash 608008723, now seen corresponding path program 12 times [2023-01-28 03:10:49,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:49,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990599617] [2023-01-28 03:10:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:49,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:49,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990599617] [2023-01-28 03:10:49,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990599617] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441872028] [2023-01-28 03:10:49,673 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:10:49,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:49,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:49,674 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:49,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 03:10:49,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:10:49,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:49,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:49,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:49,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441872028] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:49,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:10:49,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397867965] [2023-01-28 03:10:49,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:49,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:49,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:49,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1857 flow. Second operand has 12 states, 12 states have (on average 169.16666666666666) internal successors, (2030), 12 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:49,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:49,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:49,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:50,252 INFO L130 PetriNetUnfolder]: 387/752 cut-off events. [2023-01-28 03:10:50,252 INFO L131 PetriNetUnfolder]: For 10139/10139 co-relation queries the response was YES. [2023-01-28 03:10:50,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 752 events. 387/752 cut-off events. For 10139/10139 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3731 event pairs, 57 based on Foata normal form. 16/764 useless extension candidates. Maximal degree in co-relation 5292. Up to 243 conditions per place. [2023-01-28 03:10:50,259 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 114 selfloop transitions, 71 changer transitions 2/187 dead transitions. [2023-01-28 03:10:50,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 187 transitions, 2623 flow [2023-01-28 03:10:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 03:10:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 03:10:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3109 transitions. [2023-01-28 03:10:50,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192286947141316 [2023-01-28 03:10:50,264 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3109 transitions. [2023-01-28 03:10:50,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3109 transitions. [2023-01-28 03:10:50,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:50,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3109 transitions. [2023-01-28 03:10:50,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 172.72222222222223) internal successors, (3109), 18 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:50,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:50,273 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:50,273 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1857 flow. Second operand 18 states and 3109 transitions. [2023-01-28 03:10:50,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 187 transitions, 2623 flow [2023-01-28 03:10:50,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 187 transitions, 2501 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-01-28 03:10:50,303 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 1976 flow [2023-01-28 03:10:50,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1976, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2023-01-28 03:10:50,303 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 128 predicate places. [2023-01-28 03:10:50,303 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 1976 flow [2023-01-28 03:10:50,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.16666666666666) internal successors, (2030), 12 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:50,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:50,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:50,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-01-28 03:10:50,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:50,510 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:50,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash -844138731, now seen corresponding path program 13 times [2023-01-28 03:10:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513637477] [2023-01-28 03:10:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:50,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:50,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513637477] [2023-01-28 03:10:50,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513637477] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:50,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500703899] [2023-01-28 03:10:50,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:10:50,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:50,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:50,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:50,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 03:10:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:50,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:50,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:50,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500703899] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:50,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:50,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:10:50,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532589113] [2023-01-28 03:10:50,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:50,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:50,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:50,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:50,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:50,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:50,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:51,118 INFO L130 PetriNetUnfolder]: 388/747 cut-off events. [2023-01-28 03:10:51,118 INFO L131 PetriNetUnfolder]: For 10712/10712 co-relation queries the response was YES. [2023-01-28 03:10:51,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 747 events. 388/747 cut-off events. For 10712/10712 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3679 event pairs, 13 based on Foata normal form. 6/749 useless extension candidates. Maximal degree in co-relation 5382. Up to 203 conditions per place. [2023-01-28 03:10:51,129 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 123 selfloop transitions, 86 changer transitions 2/211 dead transitions. [2023-01-28 03:10:51,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 211 transitions, 3237 flow [2023-01-28 03:10:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:10:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:10:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3267 transitions. [2023-01-28 03:10:51,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41734798160449665 [2023-01-28 03:10:51,136 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3267 transitions. [2023-01-28 03:10:51,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3267 transitions. [2023-01-28 03:10:51,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:51,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3267 transitions. [2023-01-28 03:10:51,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 171.94736842105263) internal successors, (3267), 19 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:51,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 412.0) internal successors, (8240), 20 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:51,146 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 412.0) internal successors, (8240), 20 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:51,146 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 1976 flow. Second operand 19 states and 3267 transitions. [2023-01-28 03:10:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 211 transitions, 3237 flow [2023-01-28 03:10:51,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 211 transitions, 2965 flow, removed 91 selfloop flow, removed 10 redundant places. [2023-01-28 03:10:51,185 INFO L231 Difference]: Finished difference. Result has 157 places, 157 transitions, 2334 flow [2023-01-28 03:10:51,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2334, PETRI_PLACES=157, PETRI_TRANSITIONS=157} [2023-01-28 03:10:51,186 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 137 predicate places. [2023-01-28 03:10:51,186 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 157 transitions, 2334 flow [2023-01-28 03:10:51,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:51,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:51,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:51,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:51,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:51,392 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:51,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash -205590883, now seen corresponding path program 14 times [2023-01-28 03:10:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:51,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916114265] [2023-01-28 03:10:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:51,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916114265] [2023-01-28 03:10:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916114265] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095802673] [2023-01-28 03:10:51,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:10:51,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:51,459 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:51,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 03:10:51,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:51,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:51,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:51,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:51,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095802673] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:51,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:10:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648455625] [2023-01-28 03:10:51,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:10:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:51,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:10:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:10:51,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:51,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 157 transitions, 2334 flow. Second operand has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:51,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:51,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:51,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:52,025 INFO L130 PetriNetUnfolder]: 564/1111 cut-off events. [2023-01-28 03:10:52,026 INFO L131 PetriNetUnfolder]: For 18104/18104 co-relation queries the response was YES. [2023-01-28 03:10:52,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8133 conditions, 1111 events. 564/1111 cut-off events. For 18104/18104 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6245 event pairs, 45 based on Foata normal form. 18/1121 useless extension candidates. Maximal degree in co-relation 8074. Up to 406 conditions per place. [2023-01-28 03:10:52,046 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 152 selfloop transitions, 117 changer transitions 0/269 dead transitions. [2023-01-28 03:10:52,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 269 transitions, 4223 flow [2023-01-28 03:10:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 03:10:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 03:10:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2607 transitions. [2023-01-28 03:10:52,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42184466019417477 [2023-01-28 03:10:52,049 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2607 transitions. [2023-01-28 03:10:52,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2607 transitions. [2023-01-28 03:10:52,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:52,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2607 transitions. [2023-01-28 03:10:52,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 173.8) internal successors, (2607), 15 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:52,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:52,058 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:52,058 INFO L175 Difference]: Start difference. First operand has 157 places, 157 transitions, 2334 flow. Second operand 15 states and 2607 transitions. [2023-01-28 03:10:52,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 269 transitions, 4223 flow [2023-01-28 03:10:52,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 269 transitions, 3910 flow, removed 129 selfloop flow, removed 8 redundant places. [2023-01-28 03:10:52,123 INFO L231 Difference]: Finished difference. Result has 168 places, 203 transitions, 3262 flow [2023-01-28 03:10:52,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3262, PETRI_PLACES=168, PETRI_TRANSITIONS=203} [2023-01-28 03:10:52,123 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 148 predicate places. [2023-01-28 03:10:52,123 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 203 transitions, 3262 flow [2023-01-28 03:10:52,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:52,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:52,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:52,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:52,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 03:10:52,331 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:52,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1054951077, now seen corresponding path program 15 times [2023-01-28 03:10:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337206268] [2023-01-28 03:10:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337206268] [2023-01-28 03:10:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337206268] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105483629] [2023-01-28 03:10:52,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:10:52,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:52,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:52,393 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:52,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 03:10:52,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:10:52,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:52,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:52,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:52,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:10:52,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105483629] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:52,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:52,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:10:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417974987] [2023-01-28 03:10:52,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:10:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:52,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:10:52,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:10:52,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:52,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 203 transitions, 3262 flow. Second operand has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:52,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:52,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:52,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:53,010 INFO L130 PetriNetUnfolder]: 566/1133 cut-off events. [2023-01-28 03:10:53,011 INFO L131 PetriNetUnfolder]: For 19342/19342 co-relation queries the response was YES. [2023-01-28 03:10:53,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8557 conditions, 1133 events. 566/1133 cut-off events. For 19342/19342 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6498 event pairs, 23 based on Foata normal form. 6/1139 useless extension candidates. Maximal degree in co-relation 8496. Up to 342 conditions per place. [2023-01-28 03:10:53,023 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 148 selfloop transitions, 127 changer transitions 2/277 dead transitions. [2023-01-28 03:10:53,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 277 transitions, 4574 flow [2023-01-28 03:10:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 03:10:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 03:10:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3615 transitions. [2023-01-28 03:10:53,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41782246879334256 [2023-01-28 03:10:53,028 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3615 transitions. [2023-01-28 03:10:53,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3615 transitions. [2023-01-28 03:10:53,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:53,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3615 transitions. [2023-01-28 03:10:53,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 172.14285714285714) internal successors, (3615), 21 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:53,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 412.0) internal successors, (9064), 22 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:53,038 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 412.0) internal successors, (9064), 22 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:53,038 INFO L175 Difference]: Start difference. First operand has 168 places, 203 transitions, 3262 flow. Second operand 21 states and 3615 transitions. [2023-01-28 03:10:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 277 transitions, 4574 flow [2023-01-28 03:10:53,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 277 transitions, 4415 flow, removed 66 selfloop flow, removed 3 redundant places. [2023-01-28 03:10:53,157 INFO L231 Difference]: Finished difference. Result has 188 places, 211 transitions, 3597 flow [2023-01-28 03:10:53,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3597, PETRI_PLACES=188, PETRI_TRANSITIONS=211} [2023-01-28 03:10:53,158 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 168 predicate places. [2023-01-28 03:10:53,158 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 211 transitions, 3597 flow [2023-01-28 03:10:53,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:53,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:53,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:53,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:53,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 03:10:53,364 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:53,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1615313315, now seen corresponding path program 16 times [2023-01-28 03:10:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:53,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439797340] [2023-01-28 03:10:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:53,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:53,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:53,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439797340] [2023-01-28 03:10:53,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439797340] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:53,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845771432] [2023-01-28 03:10:53,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:10:53,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:53,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:53,435 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:53,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 03:10:53,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:10:53,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:53,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:53,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:53,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:53,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845771432] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:53,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:53,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 03:10:53,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655864040] [2023-01-28 03:10:53,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:53,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:10:53,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:53,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:10:53,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:10:53,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:53,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 211 transitions, 3597 flow. Second operand has 15 states, 15 states have (on average 168.73333333333332) internal successors, (2531), 15 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:53,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:53,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:54,128 INFO L130 PetriNetUnfolder]: 629/1260 cut-off events. [2023-01-28 03:10:54,129 INFO L131 PetriNetUnfolder]: For 23382/23382 co-relation queries the response was YES. [2023-01-28 03:10:54,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9976 conditions, 1260 events. 629/1260 cut-off events. For 23382/23382 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7379 event pairs, 27 based on Foata normal form. 6/1266 useless extension candidates. Maximal degree in co-relation 9912. Up to 359 conditions per place. [2023-01-28 03:10:54,142 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 147 selfloop transitions, 141 changer transitions 4/292 dead transitions. [2023-01-28 03:10:54,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 292 transitions, 5271 flow [2023-01-28 03:10:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 03:10:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 03:10:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3438 transitions. [2023-01-28 03:10:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172330097087379 [2023-01-28 03:10:54,152 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3438 transitions. [2023-01-28 03:10:54,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3438 transitions. [2023-01-28 03:10:54,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:54,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3438 transitions. [2023-01-28 03:10:54,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.9) internal successors, (3438), 20 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:54,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 412.0) internal successors, (8652), 21 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:54,163 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 412.0) internal successors, (8652), 21 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:54,163 INFO L175 Difference]: Start difference. First operand has 188 places, 211 transitions, 3597 flow. Second operand 20 states and 3438 transitions. [2023-01-28 03:10:54,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 292 transitions, 5271 flow [2023-01-28 03:10:54,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 292 transitions, 4963 flow, removed 126 selfloop flow, removed 7 redundant places. [2023-01-28 03:10:54,246 INFO L231 Difference]: Finished difference. Result has 205 places, 234 transitions, 4307 flow [2023-01-28 03:10:54,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4307, PETRI_PLACES=205, PETRI_TRANSITIONS=234} [2023-01-28 03:10:54,247 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 185 predicate places. [2023-01-28 03:10:54,247 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 234 transitions, 4307 flow [2023-01-28 03:10:54,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.73333333333332) internal successors, (2531), 15 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:54,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:54,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:54,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-01-28 03:10:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 03:10:54,454 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:54,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1858772581, now seen corresponding path program 17 times [2023-01-28 03:10:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:54,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468092376] [2023-01-28 03:10:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:54,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468092376] [2023-01-28 03:10:54,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468092376] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072534511] [2023-01-28 03:10:54,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:10:54,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:54,527 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:54,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 03:10:54,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:54,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:54,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:54,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:54,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:54,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072534511] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:54,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:54,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 03:10:54,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578754202] [2023-01-28 03:10:54,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:54,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:10:54,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:54,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:10:54,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:10:54,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:54,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 234 transitions, 4307 flow. Second operand has 15 states, 15 states have (on average 169.06666666666666) internal successors, (2536), 15 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:54,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:54,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:54,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:55,351 INFO L130 PetriNetUnfolder]: 658/1339 cut-off events. [2023-01-28 03:10:55,351 INFO L131 PetriNetUnfolder]: For 29848/29848 co-relation queries the response was YES. [2023-01-28 03:10:55,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1339 events. 658/1339 cut-off events. For 29848/29848 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8174 event pairs, 27 based on Foata normal form. 24/1363 useless extension candidates. Maximal degree in co-relation 10994. Up to 595 conditions per place. [2023-01-28 03:10:55,366 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 212 selfloop transitions, 105 changer transitions 7/324 dead transitions. [2023-01-28 03:10:55,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 324 transitions, 6036 flow [2023-01-28 03:10:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 03:10:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 03:10:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3963 transitions. [2023-01-28 03:10:55,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41821443647108486 [2023-01-28 03:10:55,372 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3963 transitions. [2023-01-28 03:10:55,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3963 transitions. [2023-01-28 03:10:55,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:55,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3963 transitions. [2023-01-28 03:10:55,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 172.30434782608697) internal successors, (3963), 23 states have internal predecessors, (3963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:55,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 412.0) internal successors, (9888), 24 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:55,384 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 412.0) internal successors, (9888), 24 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:55,384 INFO L175 Difference]: Start difference. First operand has 205 places, 234 transitions, 4307 flow. Second operand 23 states and 3963 transitions. [2023-01-28 03:10:55,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 324 transitions, 6036 flow [2023-01-28 03:10:55,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 324 transitions, 5854 flow, removed 53 selfloop flow, removed 7 redundant places. [2023-01-28 03:10:55,528 INFO L231 Difference]: Finished difference. Result has 226 places, 251 transitions, 4920 flow [2023-01-28 03:10:55,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4920, PETRI_PLACES=226, PETRI_TRANSITIONS=251} [2023-01-28 03:10:55,528 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 206 predicate places. [2023-01-28 03:10:55,528 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 251 transitions, 4920 flow [2023-01-28 03:10:55,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 169.06666666666666) internal successors, (2536), 15 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:55,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:55,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:55,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-01-28 03:10:55,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:55,734 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:55,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2139611511, now seen corresponding path program 18 times [2023-01-28 03:10:55,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:55,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067742028] [2023-01-28 03:10:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:55,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067742028] [2023-01-28 03:10:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067742028] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417088148] [2023-01-28 03:10:55,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:10:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:55,806 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:55,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 03:10:55,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:10:55,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:55,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:55,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:55,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417088148] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:55,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:55,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 03:10:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564418075] [2023-01-28 03:10:55,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:55,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:10:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:10:55,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:10:55,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:55,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 251 transitions, 4920 flow. Second operand has 15 states, 15 states have (on average 168.73333333333332) internal successors, (2531), 15 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:55,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:55,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:55,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:56,660 INFO L130 PetriNetUnfolder]: 776/1587 cut-off events. [2023-01-28 03:10:56,660 INFO L131 PetriNetUnfolder]: For 49092/49092 co-relation queries the response was YES. [2023-01-28 03:10:56,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14335 conditions, 1587 events. 776/1587 cut-off events. For 49092/49092 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10130 event pairs, 116 based on Foata normal form. 16/1603 useless extension candidates. Maximal degree in co-relation 14257. Up to 472 conditions per place. [2023-01-28 03:10:56,679 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 227 selfloop transitions, 143 changer transitions 4/374 dead transitions. [2023-01-28 03:10:56,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 374 transitions, 7969 flow [2023-01-28 03:10:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 03:10:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 03:10:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3959 transitions. [2023-01-28 03:10:56,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41779231743351625 [2023-01-28 03:10:56,683 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3959 transitions. [2023-01-28 03:10:56,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3959 transitions. [2023-01-28 03:10:56,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:56,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3959 transitions. [2023-01-28 03:10:56,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 172.1304347826087) internal successors, (3959), 23 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:56,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 412.0) internal successors, (9888), 24 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:56,694 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 412.0) internal successors, (9888), 24 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:56,694 INFO L175 Difference]: Start difference. First operand has 226 places, 251 transitions, 4920 flow. Second operand 23 states and 3959 transitions. [2023-01-28 03:10:56,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 374 transitions, 7969 flow [2023-01-28 03:10:56,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 374 transitions, 6986 flow, removed 398 selfloop flow, removed 11 redundant places. [2023-01-28 03:10:56,921 INFO L231 Difference]: Finished difference. Result has 242 places, 305 transitions, 6227 flow [2023-01-28 03:10:56,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6227, PETRI_PLACES=242, PETRI_TRANSITIONS=305} [2023-01-28 03:10:56,923 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 222 predicate places. [2023-01-28 03:10:56,924 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 305 transitions, 6227 flow [2023-01-28 03:10:56,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.73333333333332) internal successors, (2531), 15 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:56,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:56,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:56,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:57,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 03:10:57,130 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:57,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:57,130 INFO L85 PathProgramCache]: Analyzing trace with hash 988708695, now seen corresponding path program 19 times [2023-01-28 03:10:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237630982] [2023-01-28 03:10:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:57,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:57,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237630982] [2023-01-28 03:10:57,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237630982] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:57,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49211882] [2023-01-28 03:10:57,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:10:57,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:57,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:57,210 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:57,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 03:10:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:57,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:57,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:57,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49211882] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:57,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:10:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237740126] [2023-01-28 03:10:57,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:57,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:10:57,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:10:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:10:57,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:57,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 305 transitions, 6227 flow. Second operand has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:57,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:57,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:57,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:57,931 INFO L130 PetriNetUnfolder]: 862/1779 cut-off events. [2023-01-28 03:10:57,931 INFO L131 PetriNetUnfolder]: For 62137/62137 co-relation queries the response was YES. [2023-01-28 03:10:57,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15867 conditions, 1779 events. 862/1779 cut-off events. For 62137/62137 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 11790 event pairs, 195 based on Foata normal form. 40/1819 useless extension candidates. Maximal degree in co-relation 15783. Up to 1019 conditions per place. [2023-01-28 03:10:57,953 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 263 selfloop transitions, 121 changer transitions 0/384 dead transitions. [2023-01-28 03:10:57,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 384 transitions, 8294 flow [2023-01-28 03:10:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:10:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:10:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2260 transitions. [2023-01-28 03:10:57,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42195668409260645 [2023-01-28 03:10:57,956 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2260 transitions. [2023-01-28 03:10:57,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2260 transitions. [2023-01-28 03:10:57,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:57,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2260 transitions. [2023-01-28 03:10:57,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 173.84615384615384) internal successors, (2260), 13 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:57,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:57,962 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:57,963 INFO L175 Difference]: Start difference. First operand has 242 places, 305 transitions, 6227 flow. Second operand 13 states and 2260 transitions. [2023-01-28 03:10:57,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 384 transitions, 8294 flow [2023-01-28 03:10:58,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 384 transitions, 7514 flow, removed 368 selfloop flow, removed 8 redundant places. [2023-01-28 03:10:58,157 INFO L231 Difference]: Finished difference. Result has 248 places, 321 transitions, 6310 flow [2023-01-28 03:10:58,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=5296, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6310, PETRI_PLACES=248, PETRI_TRANSITIONS=321} [2023-01-28 03:10:58,158 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 228 predicate places. [2023-01-28 03:10:58,158 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 321 transitions, 6310 flow [2023-01-28 03:10:58,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:58,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:58,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:58,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:58,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:58,359 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:58,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1226313027, now seen corresponding path program 20 times [2023-01-28 03:10:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573267226] [2023-01-28 03:10:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:58,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573267226] [2023-01-28 03:10:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573267226] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306412626] [2023-01-28 03:10:58,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:10:58,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:58,422 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:58,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 03:10:58,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:10:58,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:58,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:58,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:58,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306412626] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:58,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:58,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:10:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973228683] [2023-01-28 03:10:58,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:58,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:10:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:10:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:10:58,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:58,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 321 transitions, 6310 flow. Second operand has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:58,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:58,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:58,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:10:59,228 INFO L130 PetriNetUnfolder]: 928/1905 cut-off events. [2023-01-28 03:10:59,228 INFO L131 PetriNetUnfolder]: For 55076/55076 co-relation queries the response was YES. [2023-01-28 03:10:59,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16385 conditions, 1905 events. 928/1905 cut-off events. For 55076/55076 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12743 event pairs, 156 based on Foata normal form. 6/1911 useless extension candidates. Maximal degree in co-relation 16297. Up to 640 conditions per place. [2023-01-28 03:10:59,246 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 245 selfloop transitions, 144 changer transitions 2/391 dead transitions. [2023-01-28 03:10:59,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 391 transitions, 7993 flow [2023-01-28 03:10:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 03:10:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 03:10:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2926 transitions. [2023-01-28 03:10:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41776127926898915 [2023-01-28 03:10:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2926 transitions. [2023-01-28 03:10:59,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2926 transitions. [2023-01-28 03:10:59,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:10:59,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2926 transitions. [2023-01-28 03:10:59,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.11764705882354) internal successors, (2926), 17 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:59,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 412.0) internal successors, (7416), 18 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:59,259 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 412.0) internal successors, (7416), 18 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:59,259 INFO L175 Difference]: Start difference. First operand has 248 places, 321 transitions, 6310 flow. Second operand 17 states and 2926 transitions. [2023-01-28 03:10:59,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 391 transitions, 7993 flow [2023-01-28 03:10:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 391 transitions, 7571 flow, removed 179 selfloop flow, removed 6 redundant places. [2023-01-28 03:10:59,535 INFO L231 Difference]: Finished difference. Result has 263 places, 341 transitions, 6828 flow [2023-01-28 03:10:59,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=5926, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6828, PETRI_PLACES=263, PETRI_TRANSITIONS=341} [2023-01-28 03:10:59,536 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 243 predicate places. [2023-01-28 03:10:59,536 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 341 transitions, 6828 flow [2023-01-28 03:10:59,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:59,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:10:59,537 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:10:59,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-01-28 03:10:59,743 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:10:59,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:10:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash -915768439, now seen corresponding path program 21 times [2023-01-28 03:10:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:10:59,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104199013] [2023-01-28 03:10:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:10:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:10:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:10:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:10:59,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104199013] [2023-01-28 03:10:59,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104199013] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:10:59,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087784533] [2023-01-28 03:10:59,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:10:59,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:10:59,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:10:59,816 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:10:59,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 03:10:59,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:10:59,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:10:59,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:10:59,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:10:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:59,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:10:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:10:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087784533] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:10:59,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:10:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 03:10:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040205132] [2023-01-28 03:10:59,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:10:59,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:10:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:10:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:10:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:10:59,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:10:59,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 341 transitions, 6828 flow. Second operand has 11 states, 11 states have (on average 169.0909090909091) internal successors, (1860), 11 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:10:59,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:10:59,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:10:59,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:00,440 INFO L130 PetriNetUnfolder]: 927/1906 cut-off events. [2023-01-28 03:11:00,440 INFO L131 PetriNetUnfolder]: For 54564/54564 co-relation queries the response was YES. [2023-01-28 03:11:00,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16583 conditions, 1906 events. 927/1906 cut-off events. For 54564/54564 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12775 event pairs, 173 based on Foata normal form. 2/1908 useless extension candidates. Maximal degree in co-relation 16491. Up to 1010 conditions per place. [2023-01-28 03:11:00,459 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 234 selfloop transitions, 132 changer transitions 5/371 dead transitions. [2023-01-28 03:11:00,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 371 transitions, 7954 flow [2023-01-28 03:11:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:11:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:11:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1890 transitions. [2023-01-28 03:11:00,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170344218887908 [2023-01-28 03:11:00,463 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1890 transitions. [2023-01-28 03:11:00,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1890 transitions. [2023-01-28 03:11:00,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:00,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1890 transitions. [2023-01-28 03:11:00,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 171.8181818181818) internal successors, (1890), 11 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:00,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:00,470 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:00,470 INFO L175 Difference]: Start difference. First operand has 263 places, 341 transitions, 6828 flow. Second operand 11 states and 1890 transitions. [2023-01-28 03:11:00,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 371 transitions, 7954 flow [2023-01-28 03:11:00,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 371 transitions, 7896 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 03:11:00,784 INFO L231 Difference]: Finished difference. Result has 268 places, 341 transitions, 7082 flow [2023-01-28 03:11:00,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=6770, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7082, PETRI_PLACES=268, PETRI_TRANSITIONS=341} [2023-01-28 03:11:00,785 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 248 predicate places. [2023-01-28 03:11:00,785 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 341 transitions, 7082 flow [2023-01-28 03:11:00,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.0909090909091) internal successors, (1860), 11 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:00,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:00,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:00,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-01-28 03:11:00,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:00,986 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:00,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash 222682459, now seen corresponding path program 22 times [2023-01-28 03:11:00,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:00,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945117805] [2023-01-28 03:11:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:01,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945117805] [2023-01-28 03:11:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945117805] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:01,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806847489] [2023-01-28 03:11:01,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:11:01,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:01,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:01,047 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:01,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 03:11:01,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:11:01,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:01,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:01,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:01,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:01,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806847489] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:01,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:01,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 03:11:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786059060] [2023-01-28 03:11:01,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:01,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:11:01,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:11:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:11:01,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:01,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 341 transitions, 7082 flow. Second operand has 11 states, 11 states have (on average 169.0909090909091) internal successors, (1860), 11 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:01,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:01,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:01,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:01,650 INFO L130 PetriNetUnfolder]: 943/1930 cut-off events. [2023-01-28 03:11:01,651 INFO L131 PetriNetUnfolder]: For 57665/57665 co-relation queries the response was YES. [2023-01-28 03:11:01,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17176 conditions, 1930 events. 943/1930 cut-off events. For 57665/57665 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12878 event pairs, 58 based on Foata normal form. 10/1940 useless extension candidates. Maximal degree in co-relation 17081. Up to 1497 conditions per place. [2023-01-28 03:11:01,666 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 285 selfloop transitions, 88 changer transitions 0/373 dead transitions. [2023-01-28 03:11:01,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 373 transitions, 8278 flow [2023-01-28 03:11:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:11:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:11:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1216 transitions. [2023-01-28 03:11:01,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42163661581137307 [2023-01-28 03:11:01,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1216 transitions. [2023-01-28 03:11:01,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1216 transitions. [2023-01-28 03:11:01,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:01,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1216 transitions. [2023-01-28 03:11:01,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 173.71428571428572) internal successors, (1216), 7 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:01,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:01,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:01,672 INFO L175 Difference]: Start difference. First operand has 268 places, 341 transitions, 7082 flow. Second operand 7 states and 1216 transitions. [2023-01-28 03:11:01,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 373 transitions, 8278 flow [2023-01-28 03:11:01,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 373 transitions, 8215 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-01-28 03:11:01,991 INFO L231 Difference]: Finished difference. Result has 270 places, 348 transitions, 7341 flow [2023-01-28 03:11:01,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7341, PETRI_PLACES=270, PETRI_TRANSITIONS=348} [2023-01-28 03:11:01,992 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 250 predicate places. [2023-01-28 03:11:01,992 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 348 transitions, 7341 flow [2023-01-28 03:11:01,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.0909090909091) internal successors, (1860), 11 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:01,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:01,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:01,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-01-28 03:11:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:02,195 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:02,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -127101819, now seen corresponding path program 23 times [2023-01-28 03:11:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:02,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403719479] [2023-01-28 03:11:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:02,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403719479] [2023-01-28 03:11:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403719479] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011357343] [2023-01-28 03:11:02,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:11:02,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:02,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:02,259 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:02,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 03:11:02,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:11:02,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:02,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:02,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:02,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:02,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011357343] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:02,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:02,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:11:02,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667751448] [2023-01-28 03:11:02,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:02,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:11:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:02,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:11:02,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:11:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:02,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 348 transitions, 7341 flow. Second operand has 13 states, 13 states have (on average 169.07692307692307) internal successors, (2198), 13 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:02,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:02,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:03,105 INFO L130 PetriNetUnfolder]: 978/2007 cut-off events. [2023-01-28 03:11:03,106 INFO L131 PetriNetUnfolder]: For 61128/61128 co-relation queries the response was YES. [2023-01-28 03:11:03,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18001 conditions, 2007 events. 978/2007 cut-off events. For 61128/61128 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13589 event pairs, 34 based on Foata normal form. 16/2023 useless extension candidates. Maximal degree in co-relation 17905. Up to 945 conditions per place. [2023-01-28 03:11:03,120 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 289 selfloop transitions, 144 changer transitions 1/434 dead transitions. [2023-01-28 03:11:03,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 434 transitions, 9253 flow [2023-01-28 03:11:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 03:11:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 03:11:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3785 transitions. [2023-01-28 03:11:03,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175860547219771 [2023-01-28 03:11:03,124 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3785 transitions. [2023-01-28 03:11:03,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3785 transitions. [2023-01-28 03:11:03,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:03,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3785 transitions. [2023-01-28 03:11:03,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 172.04545454545453) internal successors, (3785), 22 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:03,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:03,134 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:03,134 INFO L175 Difference]: Start difference. First operand has 270 places, 348 transitions, 7341 flow. Second operand 22 states and 3785 transitions. [2023-01-28 03:11:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 434 transitions, 9253 flow [2023-01-28 03:11:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 434 transitions, 9061 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-01-28 03:11:03,394 INFO L231 Difference]: Finished difference. Result has 296 places, 372 transitions, 8028 flow [2023-01-28 03:11:03,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=7087, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8028, PETRI_PLACES=296, PETRI_TRANSITIONS=372} [2023-01-28 03:11:03,395 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 276 predicate places. [2023-01-28 03:11:03,395 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 372 transitions, 8028 flow [2023-01-28 03:11:03,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.07692307692307) internal successors, (2198), 13 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:03,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:03,395 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:03,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-01-28 03:11:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:03,596 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:03,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1017412653, now seen corresponding path program 24 times [2023-01-28 03:11:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:03,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546662301] [2023-01-28 03:11:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546662301] [2023-01-28 03:11:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546662301] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790583328] [2023-01-28 03:11:03,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:11:03,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:03,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:03,665 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:03,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 03:11:03,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:11:03,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:03,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:03,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:03,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:11:03,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790583328] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:03,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:03,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:11:03,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652429496] [2023-01-28 03:11:03,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:03,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:11:03,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:03,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:11:03,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:11:03,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:03,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 372 transitions, 8028 flow. Second operand has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:03,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:03,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:03,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:04,486 INFO L130 PetriNetUnfolder]: 981/2002 cut-off events. [2023-01-28 03:11:04,486 INFO L131 PetriNetUnfolder]: For 66776/66776 co-relation queries the response was YES. [2023-01-28 03:11:04,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18753 conditions, 2002 events. 981/2002 cut-off events. For 66776/66776 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 13431 event pairs, 80 based on Foata normal form. 22/2024 useless extension candidates. Maximal degree in co-relation 18649. Up to 1634 conditions per place. [2023-01-28 03:11:04,501 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 333 selfloop transitions, 82 changer transitions 0/415 dead transitions. [2023-01-28 03:11:04,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 415 transitions, 9353 flow [2023-01-28 03:11:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 03:11:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 03:11:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2588 transitions. [2023-01-28 03:11:04,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41877022653721685 [2023-01-28 03:11:04,506 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2588 transitions. [2023-01-28 03:11:04,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2588 transitions. [2023-01-28 03:11:04,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:04,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2588 transitions. [2023-01-28 03:11:04,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 172.53333333333333) internal successors, (2588), 15 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:04,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:04,513 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:04,513 INFO L175 Difference]: Start difference. First operand has 296 places, 372 transitions, 8028 flow. Second operand 15 states and 2588 transitions. [2023-01-28 03:11:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 415 transitions, 9353 flow [2023-01-28 03:11:04,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 415 transitions, 9204 flow, removed 30 selfloop flow, removed 9 redundant places. [2023-01-28 03:11:04,821 INFO L231 Difference]: Finished difference. Result has 305 places, 378 transitions, 8217 flow [2023-01-28 03:11:04,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=7695, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8217, PETRI_PLACES=305, PETRI_TRANSITIONS=378} [2023-01-28 03:11:04,821 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 285 predicate places. [2023-01-28 03:11:04,821 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 378 transitions, 8217 flow [2023-01-28 03:11:04,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:04,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:04,822 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:04,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-01-28 03:11:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-01-28 03:11:05,027 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:05,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -591752163, now seen corresponding path program 25 times [2023-01-28 03:11:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:05,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115727812] [2023-01-28 03:11:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115727812] [2023-01-28 03:11:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115727812] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598470370] [2023-01-28 03:11:05,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:11:05,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:05,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:05,109 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:05,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 03:11:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:05,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:05,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:05,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598470370] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:05,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 03:11:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068325771] [2023-01-28 03:11:05,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:11:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:11:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:11:05,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:05,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 378 transitions, 8217 flow. Second operand has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:05,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:05,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:05,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:05,966 INFO L130 PetriNetUnfolder]: 1097/2244 cut-off events. [2023-01-28 03:11:05,966 INFO L131 PetriNetUnfolder]: For 81764/81764 co-relation queries the response was YES. [2023-01-28 03:11:05,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21637 conditions, 2244 events. 1097/2244 cut-off events. For 81764/81764 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 15527 event pairs, 74 based on Foata normal form. 16/2260 useless extension candidates. Maximal degree in co-relation 21529. Up to 1322 conditions per place. [2023-01-28 03:11:05,991 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 331 selfloop transitions, 148 changer transitions 0/479 dead transitions. [2023-01-28 03:11:05,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 479 transitions, 11097 flow [2023-01-28 03:11:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 03:11:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 03:11:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2599 transitions. [2023-01-28 03:11:05,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205501618122977 [2023-01-28 03:11:05,994 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2599 transitions. [2023-01-28 03:11:05,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2599 transitions. [2023-01-28 03:11:05,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:05,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2599 transitions. [2023-01-28 03:11:05,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 173.26666666666668) internal successors, (2599), 15 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:06,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:06,002 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:06,002 INFO L175 Difference]: Start difference. First operand has 305 places, 378 transitions, 8217 flow. Second operand 15 states and 2599 transitions. [2023-01-28 03:11:06,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 479 transitions, 11097 flow [2023-01-28 03:11:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 479 transitions, 10869 flow, removed 22 selfloop flow, removed 9 redundant places. [2023-01-28 03:11:06,378 INFO L231 Difference]: Finished difference. Result has 315 places, 411 transitions, 9359 flow [2023-01-28 03:11:06,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=8011, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9359, PETRI_PLACES=315, PETRI_TRANSITIONS=411} [2023-01-28 03:11:06,379 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 295 predicate places. [2023-01-28 03:11:06,379 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 411 transitions, 9359 flow [2023-01-28 03:11:06,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:06,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:06,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:06,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-01-28 03:11:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-01-28 03:11:06,586 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:06,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash 179362069, now seen corresponding path program 26 times [2023-01-28 03:11:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657458551] [2023-01-28 03:11:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657458551] [2023-01-28 03:11:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657458551] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613199166] [2023-01-28 03:11:06,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:11:06,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:06,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:06,650 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:06,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 03:11:06,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:11:06,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:06,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:06,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:06,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613199166] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:06,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 03:11:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582688641] [2023-01-28 03:11:06,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:06,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:11:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:06,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:11:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:11:06,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:06,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 411 transitions, 9359 flow. Second operand has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:06,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:06,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:06,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:07,488 INFO L130 PetriNetUnfolder]: 1134/2297 cut-off events. [2023-01-28 03:11:07,488 INFO L131 PetriNetUnfolder]: For 85699/85699 co-relation queries the response was YES. [2023-01-28 03:11:07,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22998 conditions, 2297 events. 1134/2297 cut-off events. For 85699/85699 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 15770 event pairs, 96 based on Foata normal form. 12/2309 useless extension candidates. Maximal degree in co-relation 22887. Up to 2035 conditions per place. [2023-01-28 03:11:07,510 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 375 selfloop transitions, 76 changer transitions 0/451 dead transitions. [2023-01-28 03:11:07,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 451 transitions, 11023 flow [2023-01-28 03:11:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:11:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:11:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1895 transitions. [2023-01-28 03:11:07,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181376875551633 [2023-01-28 03:11:07,512 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1895 transitions. [2023-01-28 03:11:07,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1895 transitions. [2023-01-28 03:11:07,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:07,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1895 transitions. [2023-01-28 03:11:07,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 172.27272727272728) internal successors, (1895), 11 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:07,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:07,515 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:07,515 INFO L175 Difference]: Start difference. First operand has 315 places, 411 transitions, 9359 flow. Second operand 11 states and 1895 transitions. [2023-01-28 03:11:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 451 transitions, 11023 flow [2023-01-28 03:11:07,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 451 transitions, 10660 flow, removed 114 selfloop flow, removed 13 redundant places. [2023-01-28 03:11:07,907 INFO L231 Difference]: Finished difference. Result has 312 places, 428 transitions, 9632 flow [2023-01-28 03:11:07,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9632, PETRI_PLACES=312, PETRI_TRANSITIONS=428} [2023-01-28 03:11:07,908 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 292 predicate places. [2023-01-28 03:11:07,908 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 428 transitions, 9632 flow [2023-01-28 03:11:07,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:07,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:07,909 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:07,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:08,109 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:08,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1678716689, now seen corresponding path program 27 times [2023-01-28 03:11:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:08,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822619417] [2023-01-28 03:11:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:08,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822619417] [2023-01-28 03:11:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822619417] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338680178] [2023-01-28 03:11:08,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:11:08,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:08,169 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:08,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 03:11:08,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:11:08,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:08,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:08,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:08,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338680178] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:08,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:11:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155839074] [2023-01-28 03:11:08,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:11:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:11:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:11:08,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:08,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 428 transitions, 9632 flow. Second operand has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:08,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:08,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:08,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:09,075 INFO L130 PetriNetUnfolder]: 1192/2425 cut-off events. [2023-01-28 03:11:09,076 INFO L131 PetriNetUnfolder]: For 90262/90262 co-relation queries the response was YES. [2023-01-28 03:11:09,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24067 conditions, 2425 events. 1192/2425 cut-off events. For 90262/90262 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 16940 event pairs, 94 based on Foata normal form. 12/2437 useless extension candidates. Maximal degree in co-relation 23957. Up to 1795 conditions per place. [2023-01-28 03:11:09,095 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 358 selfloop transitions, 135 changer transitions 0/493 dead transitions. [2023-01-28 03:11:09,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 493 transitions, 11552 flow [2023-01-28 03:11:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:11:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:11:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2422 transitions. [2023-01-28 03:11:09,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199029126213592 [2023-01-28 03:11:09,099 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2422 transitions. [2023-01-28 03:11:09,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2422 transitions. [2023-01-28 03:11:09,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:09,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2422 transitions. [2023-01-28 03:11:09,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:09,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:09,105 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:09,105 INFO L175 Difference]: Start difference. First operand has 312 places, 428 transitions, 9632 flow. Second operand 14 states and 2422 transitions. [2023-01-28 03:11:09,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 493 transitions, 11552 flow [2023-01-28 03:11:09,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 493 transitions, 11350 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-01-28 03:11:09,518 INFO L231 Difference]: Finished difference. Result has 321 places, 444 transitions, 10178 flow [2023-01-28 03:11:09,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=9370, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10178, PETRI_PLACES=321, PETRI_TRANSITIONS=444} [2023-01-28 03:11:09,519 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 301 predicate places. [2023-01-28 03:11:09,519 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 444 transitions, 10178 flow [2023-01-28 03:11:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:09,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:09,519 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:09,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-01-28 03:11:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 03:11:09,720 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:09,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1591495955, now seen corresponding path program 28 times [2023-01-28 03:11:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216120741] [2023-01-28 03:11:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:09,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:09,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216120741] [2023-01-28 03:11:09,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216120741] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:09,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281103069] [2023-01-28 03:11:09,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:11:09,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:09,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:09,783 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:09,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-28 03:11:09,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:11:09,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:09,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:09,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:09,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281103069] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:09,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:11:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039244116] [2023-01-28 03:11:09,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:09,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:11:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:09,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:11:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:11:09,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:09,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 444 transitions, 10178 flow. Second operand has 12 states, 12 states have (on average 169.16666666666666) internal successors, (2030), 12 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:09,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:09,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:09,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:10,724 INFO L130 PetriNetUnfolder]: 1174/2377 cut-off events. [2023-01-28 03:11:10,725 INFO L131 PetriNetUnfolder]: For 90642/90642 co-relation queries the response was YES. [2023-01-28 03:11:10,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24034 conditions, 2377 events. 1174/2377 cut-off events. For 90642/90642 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 16482 event pairs, 40 based on Foata normal form. 12/2389 useless extension candidates. Maximal degree in co-relation 23923. Up to 1021 conditions per place. [2023-01-28 03:11:10,744 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 295 selfloop transitions, 196 changer transitions 4/495 dead transitions. [2023-01-28 03:11:10,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 495 transitions, 11925 flow [2023-01-28 03:11:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:11:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:11:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3259 transitions. [2023-01-28 03:11:10,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41632600919775165 [2023-01-28 03:11:10,746 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3259 transitions. [2023-01-28 03:11:10,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3259 transitions. [2023-01-28 03:11:10,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:10,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3259 transitions. [2023-01-28 03:11:10,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 171.52631578947367) internal successors, (3259), 19 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:10,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 412.0) internal successors, (8240), 20 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:10,751 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 412.0) internal successors, (8240), 20 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:10,751 INFO L175 Difference]: Start difference. First operand has 321 places, 444 transitions, 10178 flow. Second operand 19 states and 3259 transitions. [2023-01-28 03:11:10,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 495 transitions, 11925 flow [2023-01-28 03:11:11,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 495 transitions, 11751 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-01-28 03:11:11,141 INFO L231 Difference]: Finished difference. Result has 330 places, 444 transitions, 10466 flow [2023-01-28 03:11:11,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=9899, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10466, PETRI_PLACES=330, PETRI_TRANSITIONS=444} [2023-01-28 03:11:11,141 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 310 predicate places. [2023-01-28 03:11:11,141 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 444 transitions, 10466 flow [2023-01-28 03:11:11,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.16666666666666) internal successors, (2030), 12 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:11,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:11,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:11,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-01-28 03:11:11,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-01-28 03:11:11,342 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:11,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash 139348501, now seen corresponding path program 29 times [2023-01-28 03:11:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:11,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470447158] [2023-01-28 03:11:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470447158] [2023-01-28 03:11:11,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470447158] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71175297] [2023-01-28 03:11:11,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:11:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:11,404 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:11,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-28 03:11:11,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:11:11,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:11,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:11,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:11,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71175297] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:11,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:11:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409859991] [2023-01-28 03:11:11,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:11,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:11:11,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:11:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:11:11,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:11,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 444 transitions, 10466 flow. Second operand has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:11,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:11,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:11,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:12,326 INFO L130 PetriNetUnfolder]: 1165/2364 cut-off events. [2023-01-28 03:11:12,327 INFO L131 PetriNetUnfolder]: For 93176/93176 co-relation queries the response was YES. [2023-01-28 03:11:12,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24601 conditions, 2364 events. 1165/2364 cut-off events. For 93176/93176 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 16451 event pairs, 168 based on Foata normal form. 8/2372 useless extension candidates. Maximal degree in co-relation 24489. Up to 704 conditions per place. [2023-01-28 03:11:12,350 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 309 selfloop transitions, 198 changer transitions 2/509 dead transitions. [2023-01-28 03:11:12,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 509 transitions, 12497 flow [2023-01-28 03:11:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 03:11:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 03:11:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3099 transitions. [2023-01-28 03:11:12,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178802588996764 [2023-01-28 03:11:12,353 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3099 transitions. [2023-01-28 03:11:12,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3099 transitions. [2023-01-28 03:11:12,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:12,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3099 transitions. [2023-01-28 03:11:12,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 172.16666666666666) internal successors, (3099), 18 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:12,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:12,359 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:12,359 INFO L175 Difference]: Start difference. First operand has 330 places, 444 transitions, 10466 flow. Second operand 18 states and 3099 transitions. [2023-01-28 03:11:12,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 509 transitions, 12497 flow [2023-01-28 03:11:12,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 509 transitions, 12320 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-01-28 03:11:12,806 INFO L231 Difference]: Finished difference. Result has 334 places, 449 transitions, 10940 flow [2023-01-28 03:11:12,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=10168, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10940, PETRI_PLACES=334, PETRI_TRANSITIONS=449} [2023-01-28 03:11:12,807 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 314 predicate places. [2023-01-28 03:11:12,807 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 449 transitions, 10940 flow [2023-01-28 03:11:12,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:12,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:12,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:12,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-01-28 03:11:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-01-28 03:11:13,013 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:13,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash -421013737, now seen corresponding path program 30 times [2023-01-28 03:11:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399147542] [2023-01-28 03:11:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:13,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399147542] [2023-01-28 03:11:13,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399147542] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209799862] [2023-01-28 03:11:13,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:11:13,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:13,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:13,078 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:13,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-28 03:11:13,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:11:13,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:13,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:11:13,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209799862] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:13,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:13,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 03:11:13,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389732362] [2023-01-28 03:11:13,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:13,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:11:13,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:11:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:11:13,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:13,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 449 transitions, 10940 flow. Second operand has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:13,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:13,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:13,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:14,043 INFO L130 PetriNetUnfolder]: 1160/2349 cut-off events. [2023-01-28 03:11:14,043 INFO L131 PetriNetUnfolder]: For 95384/95384 co-relation queries the response was YES. [2023-01-28 03:11:14,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25048 conditions, 2349 events. 1160/2349 cut-off events. For 95384/95384 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 16327 event pairs, 214 based on Foata normal form. 2/2351 useless extension candidates. Maximal degree in co-relation 24935. Up to 900 conditions per place. [2023-01-28 03:11:14,062 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 320 selfloop transitions, 163 changer transitions 4/487 dead transitions. [2023-01-28 03:11:14,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 487 transitions, 12329 flow [2023-01-28 03:11:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 03:11:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 03:11:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2023-01-28 03:11:14,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164138349514563 [2023-01-28 03:11:14,065 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2023-01-28 03:11:14,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2023-01-28 03:11:14,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:14,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2023-01-28 03:11:14,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:14,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 412.0) internal successors, (7004), 17 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:14,072 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 412.0) internal successors, (7004), 17 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:14,072 INFO L175 Difference]: Start difference. First operand has 334 places, 449 transitions, 10940 flow. Second operand 16 states and 2745 transitions. [2023-01-28 03:11:14,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 487 transitions, 12329 flow [2023-01-28 03:11:14,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 487 transitions, 11966 flow, removed 77 selfloop flow, removed 10 redundant places. [2023-01-28 03:11:14,542 INFO L231 Difference]: Finished difference. Result has 336 places, 445 transitions, 10801 flow [2023-01-28 03:11:14,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=10516, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10801, PETRI_PLACES=336, PETRI_TRANSITIONS=445} [2023-01-28 03:11:14,542 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 316 predicate places. [2023-01-28 03:11:14,542 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 445 transitions, 10801 flow [2023-01-28 03:11:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.92307692307693) internal successors, (2196), 13 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:14,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:14,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:14,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:14,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:14,743 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:14,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1081948156, now seen corresponding path program 31 times [2023-01-28 03:11:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:14,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436351864] [2023-01-28 03:11:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:15,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436351864] [2023-01-28 03:11:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436351864] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129629085] [2023-01-28 03:11:15,396 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:11:15,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:15,397 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:15,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-28 03:11:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:15,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:15,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:15,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:15,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129629085] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:15,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-28 03:11:15,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19908112] [2023-01-28 03:11:15,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:15,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:11:15,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:11:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:11:15,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:15,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 445 transitions, 10801 flow. Second operand has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:15,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:15,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:16,809 INFO L130 PetriNetUnfolder]: 1351/2773 cut-off events. [2023-01-28 03:11:16,809 INFO L131 PetriNetUnfolder]: For 111219/111221 co-relation queries the response was YES. [2023-01-28 03:11:16,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29422 conditions, 2773 events. 1351/2773 cut-off events. For 111219/111221 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 20272 event pairs, 91 based on Foata normal form. 5/2773 useless extension candidates. Maximal degree in co-relation 29309. Up to 2167 conditions per place. [2023-01-28 03:11:16,838 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 455 selfloop transitions, 105 changer transitions 15/585 dead transitions. [2023-01-28 03:11:16,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 585 transitions, 14581 flow [2023-01-28 03:11:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:11:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:11:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1785 transitions. [2023-01-28 03:11:16,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3938658428949691 [2023-01-28 03:11:16,839 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1785 transitions. [2023-01-28 03:11:16,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1785 transitions. [2023-01-28 03:11:16,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:16,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1785 transitions. [2023-01-28 03:11:16,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 162.27272727272728) internal successors, (1785), 11 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:16,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:16,844 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:16,844 INFO L175 Difference]: Start difference. First operand has 336 places, 445 transitions, 10801 flow. Second operand 11 states and 1785 transitions. [2023-01-28 03:11:16,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 585 transitions, 14581 flow [2023-01-28 03:11:17,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 585 transitions, 14247 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-01-28 03:11:17,408 INFO L231 Difference]: Finished difference. Result has 338 places, 507 transitions, 12541 flow [2023-01-28 03:11:17,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=10548, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12541, PETRI_PLACES=338, PETRI_TRANSITIONS=507} [2023-01-28 03:11:17,408 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 318 predicate places. [2023-01-28 03:11:17,409 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 507 transitions, 12541 flow [2023-01-28 03:11:17,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:17,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:17,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:17,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:17,615 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:17,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:17,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1129985218, now seen corresponding path program 32 times [2023-01-28 03:11:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:17,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076211310] [2023-01-28 03:11:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:17,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076211310] [2023-01-28 03:11:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076211310] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936668857] [2023-01-28 03:11:17,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:11:17,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:17,989 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:17,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-28 03:11:18,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:11:18,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:18,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:18,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:18,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:18,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936668857] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:18,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:18,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 03:11:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99732393] [2023-01-28 03:11:18,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:11:18,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:11:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:11:18,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:18,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 507 transitions, 12541 flow. Second operand has 15 states, 15 states have (on average 157.2) internal successors, (2358), 15 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:18,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:18,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:18,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:19,374 INFO L130 PetriNetUnfolder]: 1355/2761 cut-off events. [2023-01-28 03:11:19,374 INFO L131 PetriNetUnfolder]: For 115617/115619 co-relation queries the response was YES. [2023-01-28 03:11:19,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30483 conditions, 2761 events. 1355/2761 cut-off events. For 115617/115619 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 19967 event pairs, 103 based on Foata normal form. 7/2763 useless extension candidates. Maximal degree in co-relation 30361. Up to 2380 conditions per place. [2023-01-28 03:11:19,404 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 456 selfloop transitions, 79 changer transitions 17/562 dead transitions. [2023-01-28 03:11:19,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 562 transitions, 14236 flow [2023-01-28 03:11:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:11:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:11:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1932 transitions. [2023-01-28 03:11:19,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907766990291262 [2023-01-28 03:11:19,410 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1932 transitions. [2023-01-28 03:11:19,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1932 transitions. [2023-01-28 03:11:19,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:19,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1932 transitions. [2023-01-28 03:11:19,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:19,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 412.0) internal successors, (5356), 13 states have internal predecessors, (5356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:19,415 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 412.0) internal successors, (5356), 13 states have internal predecessors, (5356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:19,415 INFO L175 Difference]: Start difference. First operand has 338 places, 507 transitions, 12541 flow. Second operand 12 states and 1932 transitions. [2023-01-28 03:11:19,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 562 transitions, 14236 flow [2023-01-28 03:11:20,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 562 transitions, 13816 flow, removed 205 selfloop flow, removed 4 redundant places. [2023-01-28 03:11:20,259 INFO L231 Difference]: Finished difference. Result has 348 places, 513 transitions, 12589 flow [2023-01-28 03:11:20,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=12177, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12589, PETRI_PLACES=348, PETRI_TRANSITIONS=513} [2023-01-28 03:11:20,259 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 328 predicate places. [2023-01-28 03:11:20,260 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 513 transitions, 12589 flow [2023-01-28 03:11:20,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 157.2) internal successors, (2358), 15 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:20,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:20,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:20,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:20,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-01-28 03:11:20,462 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:20,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1044264796, now seen corresponding path program 33 times [2023-01-28 03:11:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:20,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186780488] [2023-01-28 03:11:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186780488] [2023-01-28 03:11:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186780488] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082907759] [2023-01-28 03:11:20,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:11:20,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:20,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:20,836 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:20,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-28 03:11:20,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:11:20,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:20,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:20,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:21,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082907759] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:21,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:21,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-28 03:11:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605020184] [2023-01-28 03:11:21,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:11:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:11:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:11:21,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:21,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 513 transitions, 12589 flow. Second operand has 20 states, 20 states have (on average 156.9) internal successors, (3138), 20 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:21,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:21,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:22,364 INFO L130 PetriNetUnfolder]: 1324/2676 cut-off events. [2023-01-28 03:11:22,364 INFO L131 PetriNetUnfolder]: For 105638/105640 co-relation queries the response was YES. [2023-01-28 03:11:22,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29112 conditions, 2676 events. 1324/2676 cut-off events. For 105638/105640 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 19077 event pairs, 90 based on Foata normal form. 3/2674 useless extension candidates. Maximal degree in co-relation 28988. Up to 2174 conditions per place. [2023-01-28 03:11:22,398 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 446 selfloop transitions, 102 changer transitions 5/563 dead transitions. [2023-01-28 03:11:22,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 563 transitions, 14228 flow [2023-01-28 03:11:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:11:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:11:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1462 transitions. [2023-01-28 03:11:22,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39428263214670983 [2023-01-28 03:11:22,401 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1462 transitions. [2023-01-28 03:11:22,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1462 transitions. [2023-01-28 03:11:22,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:22,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1462 transitions. [2023-01-28 03:11:22,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.44444444444446) internal successors, (1462), 9 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:22,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:22,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:22,406 INFO L175 Difference]: Start difference. First operand has 348 places, 513 transitions, 12589 flow. Second operand 9 states and 1462 transitions. [2023-01-28 03:11:22,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 563 transitions, 14228 flow [2023-01-28 03:11:23,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 563 transitions, 13823 flow, removed 147 selfloop flow, removed 6 redundant places. [2023-01-28 03:11:23,186 INFO L231 Difference]: Finished difference. Result has 349 places, 515 transitions, 12553 flow [2023-01-28 03:11:23,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=12204, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12553, PETRI_PLACES=349, PETRI_TRANSITIONS=515} [2023-01-28 03:11:23,187 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 329 predicate places. [2023-01-28 03:11:23,187 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 515 transitions, 12553 flow [2023-01-28 03:11:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.9) internal successors, (3138), 20 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:23,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:23,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:23,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:23,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-01-28 03:11:23,388 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:23,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -392624, now seen corresponding path program 34 times [2023-01-28 03:11:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833472251] [2023-01-28 03:11:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833472251] [2023-01-28 03:11:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833472251] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089146856] [2023-01-28 03:11:23,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:11:23,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:23,726 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-28 03:11:23,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:11:23,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:23,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:23,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:23,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089146856] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:24,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 03:11:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944607928] [2023-01-28 03:11:24,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:24,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:11:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:11:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:11:24,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:24,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 515 transitions, 12553 flow. Second operand has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:24,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:24,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:24,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:25,123 INFO L130 PetriNetUnfolder]: 1315/2649 cut-off events. [2023-01-28 03:11:25,124 INFO L131 PetriNetUnfolder]: For 106535/106537 co-relation queries the response was YES. [2023-01-28 03:11:25,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28554 conditions, 2649 events. 1315/2649 cut-off events. For 106535/106537 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 18800 event pairs, 89 based on Foata normal form. 3/2647 useless extension candidates. Maximal degree in co-relation 28430. Up to 2246 conditions per place. [2023-01-28 03:11:25,150 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 454 selfloop transitions, 95 changer transitions 5/564 dead transitions. [2023-01-28 03:11:25,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 564 transitions, 14059 flow [2023-01-28 03:11:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:11:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:11:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1775 transitions. [2023-01-28 03:11:25,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39165931156222417 [2023-01-28 03:11:25,151 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1775 transitions. [2023-01-28 03:11:25,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1775 transitions. [2023-01-28 03:11:25,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:25,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1775 transitions. [2023-01-28 03:11:25,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.36363636363637) internal successors, (1775), 11 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:25,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:25,155 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:25,155 INFO L175 Difference]: Start difference. First operand has 349 places, 515 transitions, 12553 flow. Second operand 11 states and 1775 transitions. [2023-01-28 03:11:25,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 564 transitions, 14059 flow [2023-01-28 03:11:25,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 564 transitions, 13815 flow, removed 41 selfloop flow, removed 6 redundant places. [2023-01-28 03:11:25,756 INFO L231 Difference]: Finished difference. Result has 354 places, 521 transitions, 12684 flow [2023-01-28 03:11:25,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=12315, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12684, PETRI_PLACES=354, PETRI_TRANSITIONS=521} [2023-01-28 03:11:25,756 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 334 predicate places. [2023-01-28 03:11:25,757 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 521 transitions, 12684 flow [2023-01-28 03:11:25,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:25,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:25,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:25,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-01-28 03:11:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-01-28 03:11:25,958 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:25,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2125930154, now seen corresponding path program 35 times [2023-01-28 03:11:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124457220] [2023-01-28 03:11:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:26,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124457220] [2023-01-28 03:11:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124457220] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067510253] [2023-01-28 03:11:26,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:11:26,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:26,289 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:26,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-28 03:11:26,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:11:26,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:26,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:26,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:26,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067510253] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:26,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-01-28 03:11:26,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439089036] [2023-01-28 03:11:26,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:26,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:11:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:11:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:11:26,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:26,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 521 transitions, 12684 flow. Second operand has 17 states, 17 states have (on average 157.1764705882353) internal successors, (2672), 17 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:26,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:26,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:26,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:27,585 INFO L130 PetriNetUnfolder]: 1394/2843 cut-off events. [2023-01-28 03:11:27,585 INFO L131 PetriNetUnfolder]: For 115875/115877 co-relation queries the response was YES. [2023-01-28 03:11:27,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30514 conditions, 2843 events. 1394/2843 cut-off events. For 115875/115877 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 20650 event pairs, 110 based on Foata normal form. 4/2842 useless extension candidates. Maximal degree in co-relation 30389. Up to 2509 conditions per place. [2023-01-28 03:11:27,613 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 488 selfloop transitions, 90 changer transitions 6/594 dead transitions. [2023-01-28 03:11:27,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 594 transitions, 15081 flow [2023-01-28 03:11:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:11:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:11:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1296 transitions. [2023-01-28 03:11:27,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932038834951456 [2023-01-28 03:11:27,615 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1296 transitions. [2023-01-28 03:11:27,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1296 transitions. [2023-01-28 03:11:27,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:27,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1296 transitions. [2023-01-28 03:11:27,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:27,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:27,617 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:27,617 INFO L175 Difference]: Start difference. First operand has 354 places, 521 transitions, 12684 flow. Second operand 8 states and 1296 transitions. [2023-01-28 03:11:27,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 594 transitions, 15081 flow [2023-01-28 03:11:28,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 594 transitions, 14861 flow, removed 22 selfloop flow, removed 9 redundant places. [2023-01-28 03:11:28,303 INFO L231 Difference]: Finished difference. Result has 355 places, 556 transitions, 13700 flow [2023-01-28 03:11:28,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=12470, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13700, PETRI_PLACES=355, PETRI_TRANSITIONS=556} [2023-01-28 03:11:28,303 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 335 predicate places. [2023-01-28 03:11:28,303 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 556 transitions, 13700 flow [2023-01-28 03:11:28,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 157.1764705882353) internal successors, (2672), 17 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:28,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:28,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:28,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:28,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-01-28 03:11:28,504 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:28,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2021571692, now seen corresponding path program 36 times [2023-01-28 03:11:28,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:28,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852490568] [2023-01-28 03:11:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:28,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:28,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:28,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852490568] [2023-01-28 03:11:28,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852490568] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:28,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50219666] [2023-01-28 03:11:28,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:11:28,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:28,821 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:28,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-28 03:11:28,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:11:28,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:28,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:29,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50219666] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:29,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-01-28 03:11:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611769014] [2023-01-28 03:11:29,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:11:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:11:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:11:29,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:29,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 556 transitions, 13700 flow. Second operand has 17 states, 17 states have (on average 157.23529411764707) internal successors, (2673), 17 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:29,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:29,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:29,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:30,101 INFO L130 PetriNetUnfolder]: 1382/2807 cut-off events. [2023-01-28 03:11:30,101 INFO L131 PetriNetUnfolder]: For 118289/118291 co-relation queries the response was YES. [2023-01-28 03:11:30,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30558 conditions, 2807 events. 1382/2807 cut-off events. For 118289/118291 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 20271 event pairs, 110 based on Foata normal form. 4/2806 useless extension candidates. Maximal degree in co-relation 30431. Up to 2509 conditions per place. [2023-01-28 03:11:30,130 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 489 selfloop transitions, 85 changer transitions 9/593 dead transitions. [2023-01-28 03:11:30,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 593 transitions, 15227 flow [2023-01-28 03:11:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:11:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:11:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1296 transitions. [2023-01-28 03:11:30,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932038834951456 [2023-01-28 03:11:30,132 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1296 transitions. [2023-01-28 03:11:30,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1296 transitions. [2023-01-28 03:11:30,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:30,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1296 transitions. [2023-01-28 03:11:30,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:30,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:30,134 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:30,134 INFO L175 Difference]: Start difference. First operand has 355 places, 556 transitions, 13700 flow. Second operand 8 states and 1296 transitions. [2023-01-28 03:11:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 593 transitions, 15227 flow [2023-01-28 03:11:30,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 593 transitions, 14866 flow, removed 131 selfloop flow, removed 4 redundant places. [2023-01-28 03:11:30,877 INFO L231 Difference]: Finished difference. Result has 360 places, 556 transitions, 13593 flow [2023-01-28 03:11:30,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=13375, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13593, PETRI_PLACES=360, PETRI_TRANSITIONS=556} [2023-01-28 03:11:30,878 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 340 predicate places. [2023-01-28 03:11:30,879 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 556 transitions, 13593 flow [2023-01-28 03:11:30,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 157.23529411764707) internal successors, (2673), 17 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:30,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:30,879 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:30,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:31,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:31,085 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:31,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -940248734, now seen corresponding path program 37 times [2023-01-28 03:11:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112044501] [2023-01-28 03:11:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:31,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112044501] [2023-01-28 03:11:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112044501] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036647985] [2023-01-28 03:11:31,445 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:11:31,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:31,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:31,449 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:31,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-28 03:11:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:31,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:31,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:31,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:31,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036647985] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:31,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:31,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-01-28 03:11:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125808282] [2023-01-28 03:11:31,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:11:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:11:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:11:31,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:31,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 556 transitions, 13593 flow. Second operand has 17 states, 17 states have (on average 157.23529411764707) internal successors, (2673), 17 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:31,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:31,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:31,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:32,722 INFO L130 PetriNetUnfolder]: 1376/2773 cut-off events. [2023-01-28 03:11:32,722 INFO L131 PetriNetUnfolder]: For 114040/114042 co-relation queries the response was YES. [2023-01-28 03:11:32,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30062 conditions, 2773 events. 1376/2773 cut-off events. For 114040/114042 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 19832 event pairs, 116 based on Foata normal form. 4/2772 useless extension candidates. Maximal degree in co-relation 29933. Up to 2558 conditions per place. [2023-01-28 03:11:32,754 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 504 selfloop transitions, 67 changer transitions 7/588 dead transitions. [2023-01-28 03:11:32,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 588 transitions, 15009 flow [2023-01-28 03:11:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:11:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:11:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1291 transitions. [2023-01-28 03:11:32,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916868932038835 [2023-01-28 03:11:32,755 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1291 transitions. [2023-01-28 03:11:32,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1291 transitions. [2023-01-28 03:11:32,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:32,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1291 transitions. [2023-01-28 03:11:32,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.375) internal successors, (1291), 8 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:32,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:32,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:32,758 INFO L175 Difference]: Start difference. First operand has 360 places, 556 transitions, 13593 flow. Second operand 8 states and 1291 transitions. [2023-01-28 03:11:32,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 588 transitions, 15009 flow [2023-01-28 03:11:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 588 transitions, 14876 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-01-28 03:11:33,597 INFO L231 Difference]: Finished difference. Result has 365 places, 559 transitions, 13732 flow [2023-01-28 03:11:33,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=13464, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13732, PETRI_PLACES=365, PETRI_TRANSITIONS=559} [2023-01-28 03:11:33,598 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 345 predicate places. [2023-01-28 03:11:33,598 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 559 transitions, 13732 flow [2023-01-28 03:11:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 157.23529411764707) internal successors, (2673), 17 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:33,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:33,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:33,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:33,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-01-28 03:11:33,799 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:33,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1160083242, now seen corresponding path program 38 times [2023-01-28 03:11:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:33,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543251888] [2023-01-28 03:11:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:33,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543251888] [2023-01-28 03:11:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543251888] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009446186] [2023-01-28 03:11:34,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:11:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:34,245 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-28 03:11:34,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:11:34,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:34,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:34,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:34,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:34,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009446186] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:34,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:34,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-01-28 03:11:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713498880] [2023-01-28 03:11:34,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:34,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:11:34,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:11:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:11:34,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 412 [2023-01-28 03:11:34,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 559 transitions, 13732 flow. Second operand has 17 states, 17 states have (on average 152.11764705882354) internal successors, (2586), 17 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:34,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:34,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 412 [2023-01-28 03:11:34,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:35,702 INFO L130 PetriNetUnfolder]: 1481/3017 cut-off events. [2023-01-28 03:11:35,702 INFO L131 PetriNetUnfolder]: For 126145/126147 co-relation queries the response was YES. [2023-01-28 03:11:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32741 conditions, 3017 events. 1481/3017 cut-off events. For 126145/126147 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 22201 event pairs, 114 based on Foata normal form. 9/3021 useless extension candidates. Maximal degree in co-relation 32610. Up to 2625 conditions per place. [2023-01-28 03:11:35,807 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 542 selfloop transitions, 98 changer transitions 25/675 dead transitions. [2023-01-28 03:11:35,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 675 transitions, 17044 flow [2023-01-28 03:11:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 03:11:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 03:11:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2028 transitions. [2023-01-28 03:11:35,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786407766990291 [2023-01-28 03:11:35,809 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2028 transitions. [2023-01-28 03:11:35,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2028 transitions. [2023-01-28 03:11:35,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:35,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2028 transitions. [2023-01-28 03:11:35,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:35,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:35,814 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:35,814 INFO L175 Difference]: Start difference. First operand has 365 places, 559 transitions, 13732 flow. Second operand 13 states and 2028 transitions. [2023-01-28 03:11:35,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 675 transitions, 17044 flow [2023-01-28 03:11:36,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 675 transitions, 16773 flow, removed 62 selfloop flow, removed 6 redundant places. [2023-01-28 03:11:36,586 INFO L231 Difference]: Finished difference. Result has 380 places, 613 transitions, 15208 flow [2023-01-28 03:11:36,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=13469, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15208, PETRI_PLACES=380, PETRI_TRANSITIONS=613} [2023-01-28 03:11:36,587 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 360 predicate places. [2023-01-28 03:11:36,587 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 613 transitions, 15208 flow [2023-01-28 03:11:36,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 152.11764705882354) internal successors, (2586), 17 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:36,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:36,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:36,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-01-28 03:11:36,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-28 03:11:36,788 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:36,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1875827202, now seen corresponding path program 39 times [2023-01-28 03:11:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:36,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110395731] [2023-01-28 03:11:36,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:36,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:37,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110395731] [2023-01-28 03:11:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110395731] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251649513] [2023-01-28 03:11:37,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:11:37,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:37,133 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:37,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-28 03:11:37,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:11:37,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:37,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:37,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:37,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251649513] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:37,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-28 03:11:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210862320] [2023-01-28 03:11:37,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:11:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:11:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:11:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:37,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 613 transitions, 15208 flow. Second operand has 20 states, 20 states have (on average 156.9) internal successors, (3138), 20 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:37,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:37,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:37,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:38,773 INFO L130 PetriNetUnfolder]: 1572/3187 cut-off events. [2023-01-28 03:11:38,774 INFO L131 PetriNetUnfolder]: For 149767/149769 co-relation queries the response was YES. [2023-01-28 03:11:38,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35630 conditions, 3187 events. 1572/3187 cut-off events. For 149767/149769 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 23588 event pairs, 125 based on Foata normal form. 6/3188 useless extension candidates. Maximal degree in co-relation 35490. Up to 2651 conditions per place. [2023-01-28 03:11:38,807 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 560 selfloop transitions, 118 changer transitions 15/703 dead transitions. [2023-01-28 03:11:38,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 703 transitions, 18266 flow [2023-01-28 03:11:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:11:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:11:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1777 transitions. [2023-01-28 03:11:38,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39210061782877315 [2023-01-28 03:11:38,809 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1777 transitions. [2023-01-28 03:11:38,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1777 transitions. [2023-01-28 03:11:38,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:38,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1777 transitions. [2023-01-28 03:11:38,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.54545454545453) internal successors, (1777), 11 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:38,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:38,812 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:38,812 INFO L175 Difference]: Start difference. First operand has 380 places, 613 transitions, 15208 flow. Second operand 11 states and 1777 transitions. [2023-01-28 03:11:38,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 703 transitions, 18266 flow [2023-01-28 03:11:39,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 703 transitions, 17761 flow, removed 249 selfloop flow, removed 3 redundant places. [2023-01-28 03:11:39,763 INFO L231 Difference]: Finished difference. Result has 391 places, 645 transitions, 16081 flow [2023-01-28 03:11:39,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=14721, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16081, PETRI_PLACES=391, PETRI_TRANSITIONS=645} [2023-01-28 03:11:39,763 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 371 predicate places. [2023-01-28 03:11:39,763 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 645 transitions, 16081 flow [2023-01-28 03:11:39,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.9) internal successors, (3138), 20 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:39,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:39,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:39,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-01-28 03:11:39,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-01-28 03:11:39,965 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:39,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1336639400, now seen corresponding path program 40 times [2023-01-28 03:11:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584762158] [2023-01-28 03:11:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:39,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:40,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:40,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584762158] [2023-01-28 03:11:40,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584762158] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:40,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271425998] [2023-01-28 03:11:40,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:11:40,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:40,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:40,306 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:40,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-28 03:11:40,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:11:40,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:40,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:40,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:40,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271425998] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:40,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:40,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-01-28 03:11:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405821136] [2023-01-28 03:11:40,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:11:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:11:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:11:40,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:40,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 645 transitions, 16081 flow. Second operand has 17 states, 17 states have (on average 157.11764705882354) internal successors, (2671), 17 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:40,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:40,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:40,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:41,958 INFO L130 PetriNetUnfolder]: 1610/3255 cut-off events. [2023-01-28 03:11:41,958 INFO L131 PetriNetUnfolder]: For 156258/156260 co-relation queries the response was YES. [2023-01-28 03:11:41,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36511 conditions, 3255 events. 1610/3255 cut-off events. For 156258/156260 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 24094 event pairs, 125 based on Foata normal form. 4/3254 useless extension candidates. Maximal degree in co-relation 36366. Up to 2986 conditions per place. [2023-01-28 03:11:41,996 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 604 selfloop transitions, 76 changer transitions 6/696 dead transitions. [2023-01-28 03:11:41,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 696 transitions, 18224 flow [2023-01-28 03:11:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:11:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:11:41,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1449 transitions. [2023-01-28 03:11:41,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907766990291262 [2023-01-28 03:11:41,998 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1449 transitions. [2023-01-28 03:11:41,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1449 transitions. [2023-01-28 03:11:41,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:41,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1449 transitions. [2023-01-28 03:11:41,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:42,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:42,001 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:42,001 INFO L175 Difference]: Start difference. First operand has 391 places, 645 transitions, 16081 flow. Second operand 9 states and 1449 transitions. [2023-01-28 03:11:42,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 696 transitions, 18224 flow [2023-01-28 03:11:43,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 696 transitions, 17740 flow, removed 197 selfloop flow, removed 6 redundant places. [2023-01-28 03:11:43,026 INFO L231 Difference]: Finished difference. Result has 395 places, 666 transitions, 16436 flow [2023-01-28 03:11:43,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=15609, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16436, PETRI_PLACES=395, PETRI_TRANSITIONS=666} [2023-01-28 03:11:43,027 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 375 predicate places. [2023-01-28 03:11:43,027 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 666 transitions, 16436 flow [2023-01-28 03:11:43,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 157.11764705882354) internal successors, (2671), 17 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:43,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:43,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:43,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-01-28 03:11:43,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:43,228 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:43,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1766263854, now seen corresponding path program 41 times [2023-01-28 03:11:43,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:43,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842538127] [2023-01-28 03:11:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:43,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842538127] [2023-01-28 03:11:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842538127] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493378979] [2023-01-28 03:11:43,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:11:43,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:43,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:43,586 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:43,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-01-28 03:11:43,698 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:11:43,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:43,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:43,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493378979] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:44,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:44,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-01-28 03:11:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364628991] [2023-01-28 03:11:44,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:44,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 03:11:44,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 03:11:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-01-28 03:11:44,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:44,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 666 transitions, 16436 flow. Second operand has 19 states, 19 states have (on average 157.10526315789474) internal successors, (2985), 19 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:44,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:44,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:44,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:45,186 INFO L130 PetriNetUnfolder]: 1669/3389 cut-off events. [2023-01-28 03:11:45,187 INFO L131 PetriNetUnfolder]: For 146357/146359 co-relation queries the response was YES. [2023-01-28 03:11:45,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37004 conditions, 3389 events. 1669/3389 cut-off events. For 146357/146359 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 25388 event pairs, 128 based on Foata normal form. 5/3389 useless extension candidates. Maximal degree in co-relation 36858. Up to 3011 conditions per place. [2023-01-28 03:11:45,226 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 612 selfloop transitions, 101 changer transitions 7/730 dead transitions. [2023-01-28 03:11:45,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 730 transitions, 18849 flow [2023-01-28 03:11:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:11:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:11:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1299 transitions. [2023-01-28 03:11:45,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941140776699029 [2023-01-28 03:11:45,228 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1299 transitions. [2023-01-28 03:11:45,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1299 transitions. [2023-01-28 03:11:45,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:45,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1299 transitions. [2023-01-28 03:11:45,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.375) internal successors, (1299), 8 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:45,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:45,230 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 412.0) internal successors, (3708), 9 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:45,230 INFO L175 Difference]: Start difference. First operand has 395 places, 666 transitions, 16436 flow. Second operand 8 states and 1299 transitions. [2023-01-28 03:11:45,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 730 transitions, 18849 flow [2023-01-28 03:11:46,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 730 transitions, 18501 flow, removed 125 selfloop flow, removed 5 redundant places. [2023-01-28 03:11:46,374 INFO L231 Difference]: Finished difference. Result has 399 places, 692 transitions, 17072 flow [2023-01-28 03:11:46,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=16094, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17072, PETRI_PLACES=399, PETRI_TRANSITIONS=692} [2023-01-28 03:11:46,375 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 379 predicate places. [2023-01-28 03:11:46,375 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 692 transitions, 17072 flow [2023-01-28 03:11:46,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 157.10526315789474) internal successors, (2985), 19 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:46,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:46,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:46,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:46,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:46,581 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:46,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:46,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1615598274, now seen corresponding path program 42 times [2023-01-28 03:11:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334615973] [2023-01-28 03:11:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:46,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:46,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334615973] [2023-01-28 03:11:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334615973] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:46,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899213744] [2023-01-28 03:11:46,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:11:46,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:46,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:46,909 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-01-28 03:11:47,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:11:47,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:47,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:47,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:47,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:47,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899213744] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:47,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:47,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-01-28 03:11:47,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605039618] [2023-01-28 03:11:47,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:47,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 03:11:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 03:11:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-01-28 03:11:47,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:47,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 692 transitions, 17072 flow. Second operand has 19 states, 19 states have (on average 157.0) internal successors, (2983), 19 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:47,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:47,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:47,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:48,618 INFO L130 PetriNetUnfolder]: 1664/3354 cut-off events. [2023-01-28 03:11:48,618 INFO L131 PetriNetUnfolder]: For 147446/147448 co-relation queries the response was YES. [2023-01-28 03:11:48,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36721 conditions, 3354 events. 1664/3354 cut-off events. For 147446/147448 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 24919 event pairs, 125 based on Foata normal form. 5/3354 useless extension candidates. Maximal degree in co-relation 36573. Up to 3011 conditions per place. [2023-01-28 03:11:48,650 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 610 selfloop transitions, 98 changer transitions 8/726 dead transitions. [2023-01-28 03:11:48,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 726 transitions, 18740 flow [2023-01-28 03:11:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:11:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:11:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1454 transitions. [2023-01-28 03:11:48,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39212513484358147 [2023-01-28 03:11:48,652 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1454 transitions. [2023-01-28 03:11:48,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1454 transitions. [2023-01-28 03:11:48,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:48,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1454 transitions. [2023-01-28 03:11:48,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.55555555555554) internal successors, (1454), 9 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:48,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:48,656 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:48,656 INFO L175 Difference]: Start difference. First operand has 399 places, 692 transitions, 17072 flow. Second operand 9 states and 1454 transitions. [2023-01-28 03:11:48,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 726 transitions, 18740 flow [2023-01-28 03:11:49,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 726 transitions, 18462 flow, removed 67 selfloop flow, removed 5 redundant places. [2023-01-28 03:11:49,738 INFO L231 Difference]: Finished difference. Result has 403 places, 692 transitions, 17068 flow [2023-01-28 03:11:49,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=16798, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17068, PETRI_PLACES=403, PETRI_TRANSITIONS=692} [2023-01-28 03:11:49,739 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 383 predicate places. [2023-01-28 03:11:49,739 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 692 transitions, 17068 flow [2023-01-28 03:11:49,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 157.0) internal successors, (2983), 19 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:49,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:49,740 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:49,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:49,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:49,940 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:49,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash -210237672, now seen corresponding path program 43 times [2023-01-28 03:11:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:49,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071172291] [2023-01-28 03:11:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071172291] [2023-01-28 03:11:50,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071172291] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456955684] [2023-01-28 03:11:50,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:11:50,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:50,253 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:50,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-01-28 03:11:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:50,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:50,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:50,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456955684] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:50,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 03:11:50,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041593200] [2023-01-28 03:11:50,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:50,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:11:50,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:50,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:11:50,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:11:50,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:50,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 692 transitions, 17068 flow. Second operand has 18 states, 18 states have (on average 157.11111111111111) internal successors, (2828), 18 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:50,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:50,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:50,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:51,970 INFO L130 PetriNetUnfolder]: 1648/3305 cut-off events. [2023-01-28 03:11:51,970 INFO L131 PetriNetUnfolder]: For 144278/144280 co-relation queries the response was YES. [2023-01-28 03:11:51,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36316 conditions, 3305 events. 1648/3305 cut-off events. For 144278/144280 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 24310 event pairs, 127 based on Foata normal form. 4/3304 useless extension candidates. Maximal degree in co-relation 36167. Up to 2910 conditions per place. [2023-01-28 03:11:52,008 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 612 selfloop transitions, 116 changer transitions 5/743 dead transitions. [2023-01-28 03:11:52,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 743 transitions, 19087 flow [2023-01-28 03:11:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 03:11:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 03:11:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1774 transitions. [2023-01-28 03:11:52,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3914386584289497 [2023-01-28 03:11:52,009 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1774 transitions. [2023-01-28 03:11:52,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1774 transitions. [2023-01-28 03:11:52,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:52,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1774 transitions. [2023-01-28 03:11:52,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.27272727272728) internal successors, (1774), 11 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:52,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:52,013 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:52,013 INFO L175 Difference]: Start difference. First operand has 403 places, 692 transitions, 17068 flow. Second operand 11 states and 1774 transitions. [2023-01-28 03:11:52,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 743 transitions, 19087 flow [2023-01-28 03:11:53,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 743 transitions, 18935 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-01-28 03:11:53,090 INFO L231 Difference]: Finished difference. Result has 410 places, 702 transitions, 17441 flow [2023-01-28 03:11:53,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=16924, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17441, PETRI_PLACES=410, PETRI_TRANSITIONS=702} [2023-01-28 03:11:53,090 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 390 predicate places. [2023-01-28 03:11:53,090 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 702 transitions, 17441 flow [2023-01-28 03:11:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 157.11111111111111) internal successors, (2828), 18 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:53,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:53,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:53,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-01-28 03:11:53,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-01-28 03:11:53,293 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:53,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 639122522, now seen corresponding path program 44 times [2023-01-28 03:11:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088045126] [2023-01-28 03:11:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088045126] [2023-01-28 03:11:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088045126] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552389646] [2023-01-28 03:11:53,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:11:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:53,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:53,581 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:53,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-01-28 03:11:53,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:11:53,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:53,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 86 conjunts are in the unsatisfiable core [2023-01-28 03:11:53,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:53,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:54,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552389646] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:54,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-01-28 03:11:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077342018] [2023-01-28 03:11:54,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:11:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:11:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:11:54,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 412 [2023-01-28 03:11:54,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 702 transitions, 17441 flow. Second operand has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:54,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:54,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 412 [2023-01-28 03:11:54,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:55,170 INFO L130 PetriNetUnfolder]: 1644/3278 cut-off events. [2023-01-28 03:11:55,171 INFO L131 PetriNetUnfolder]: For 145082/145084 co-relation queries the response was YES. [2023-01-28 03:11:55,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36336 conditions, 3278 events. 1644/3278 cut-off events. For 145082/145084 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 23893 event pairs, 134 based on Foata normal form. 3/3276 useless extension candidates. Maximal degree in co-relation 36185. Up to 2831 conditions per place. [2023-01-28 03:11:55,209 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 604 selfloop transitions, 119 changer transitions 5/738 dead transitions. [2023-01-28 03:11:55,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 738 transitions, 19267 flow [2023-01-28 03:11:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:11:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:11:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1457 transitions. [2023-01-28 03:11:55,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39293419633225457 [2023-01-28 03:11:55,210 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1457 transitions. [2023-01-28 03:11:55,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1457 transitions. [2023-01-28 03:11:55,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:55,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1457 transitions. [2023-01-28 03:11:55,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.88888888888889) internal successors, (1457), 9 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:55,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:55,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:55,213 INFO L175 Difference]: Start difference. First operand has 410 places, 702 transitions, 17441 flow. Second operand 9 states and 1457 transitions. [2023-01-28 03:11:55,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 738 transitions, 19267 flow [2023-01-28 03:11:56,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 738 transitions, 18983 flow, removed 42 selfloop flow, removed 8 redundant places. [2023-01-28 03:11:56,319 INFO L231 Difference]: Finished difference. Result has 412 places, 704 transitions, 17544 flow [2023-01-28 03:11:56,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=17163, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17544, PETRI_PLACES=412, PETRI_TRANSITIONS=704} [2023-01-28 03:11:56,320 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 392 predicate places. [2023-01-28 03:11:56,320 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 704 transitions, 17544 flow [2023-01-28 03:11:56,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:56,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:56,320 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:56,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-01-28 03:11:56,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-01-28 03:11:56,521 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:11:56,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:11:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash 708283217, now seen corresponding path program 45 times [2023-01-28 03:11:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:11:56,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004880069] [2023-01-28 03:11:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:11:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:11:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:11:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:56,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:11:56,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004880069] [2023-01-28 03:11:56,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004880069] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:11:56,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562377297] [2023-01-28 03:11:56,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:11:56,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:11:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:11:56,586 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:11:56,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-01-28 03:11:56,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:11:56,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:11:56,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:11:56,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:11:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:56,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:11:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:11:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562377297] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:11:56,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:11:56,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-01-28 03:11:56,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688481020] [2023-01-28 03:11:56,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:11:56,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:11:56,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:11:56,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:11:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:11:56,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:11:56,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 704 transitions, 17544 flow. Second operand has 14 states, 14 states have (on average 169.21428571428572) internal successors, (2369), 14 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:56,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:11:56,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:11:56,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:11:58,187 INFO L130 PetriNetUnfolder]: 2101/4250 cut-off events. [2023-01-28 03:11:58,187 INFO L131 PetriNetUnfolder]: For 196854/196854 co-relation queries the response was YES. [2023-01-28 03:11:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46884 conditions, 4250 events. 2101/4250 cut-off events. For 196854/196854 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 32675 event pairs, 313 based on Foata normal form. 4/4254 useless extension candidates. Maximal degree in co-relation 46731. Up to 1463 conditions per place. [2023-01-28 03:11:58,238 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 549 selfloop transitions, 384 changer transitions 15/948 dead transitions. [2023-01-28 03:11:58,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 948 transitions, 25213 flow [2023-01-28 03:11:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:11:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:11:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2413 transitions. [2023-01-28 03:11:58,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183425797503467 [2023-01-28 03:11:58,240 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2413 transitions. [2023-01-28 03:11:58,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2413 transitions. [2023-01-28 03:11:58,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:11:58,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2413 transitions. [2023-01-28 03:11:58,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 172.35714285714286) internal successors, (2413), 14 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:58,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:58,244 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:58,244 INFO L175 Difference]: Start difference. First operand has 412 places, 704 transitions, 17544 flow. Second operand 14 states and 2413 transitions. [2023-01-28 03:11:58,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 948 transitions, 25213 flow [2023-01-28 03:11:59,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 948 transitions, 24802 flow, removed 72 selfloop flow, removed 6 redundant places. [2023-01-28 03:11:59,958 INFO L231 Difference]: Finished difference. Result has 424 places, 845 transitions, 22362 flow [2023-01-28 03:11:59,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=17262, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=22362, PETRI_PLACES=424, PETRI_TRANSITIONS=845} [2023-01-28 03:11:59,959 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 404 predicate places. [2023-01-28 03:11:59,959 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 845 transitions, 22362 flow [2023-01-28 03:11:59,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 169.21428571428572) internal successors, (2369), 14 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:11:59,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:11:59,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:11:59,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-01-28 03:12:00,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-01-28 03:12:00,160 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:00,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1132772869, now seen corresponding path program 46 times [2023-01-28 03:12:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737112837] [2023-01-28 03:12:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737112837] [2023-01-28 03:12:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737112837] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198010310] [2023-01-28 03:12:00,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:12:00,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:00,228 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:00,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-01-28 03:12:00,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:12:00,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:00,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:00,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:00,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198010310] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:00,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-01-28 03:12:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752273073] [2023-01-28 03:12:00,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:00,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:12:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:00,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:12:00,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:12:00,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:00,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 845 transitions, 22362 flow. Second operand has 14 states, 14 states have (on average 169.07142857142858) internal successors, (2367), 14 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:00,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:00,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:00,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:02,390 INFO L130 PetriNetUnfolder]: 2208/4437 cut-off events. [2023-01-28 03:12:02,390 INFO L131 PetriNetUnfolder]: For 223350/223350 co-relation queries the response was YES. [2023-01-28 03:12:02,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50770 conditions, 4437 events. 2208/4437 cut-off events. For 223350/223350 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 34327 event pairs, 212 based on Foata normal form. 36/4473 useless extension candidates. Maximal degree in co-relation 50612. Up to 2556 conditions per place. [2023-01-28 03:12:02,448 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 707 selfloop transitions, 265 changer transitions 0/972 dead transitions. [2023-01-28 03:12:02,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 972 transitions, 27055 flow [2023-01-28 03:12:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:12:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:12:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1569 transitions. [2023-01-28 03:12:02,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231391585760518 [2023-01-28 03:12:02,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1569 transitions. [2023-01-28 03:12:02,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1569 transitions. [2023-01-28 03:12:02,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:02,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1569 transitions. [2023-01-28 03:12:02,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 174.33333333333334) internal successors, (1569), 9 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:02,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:02,455 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:02,455 INFO L175 Difference]: Start difference. First operand has 424 places, 845 transitions, 22362 flow. Second operand 9 states and 1569 transitions. [2023-01-28 03:12:02,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 972 transitions, 27055 flow [2023-01-28 03:12:04,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 972 transitions, 26120 flow, removed 283 selfloop flow, removed 9 redundant places. [2023-01-28 03:12:04,356 INFO L231 Difference]: Finished difference. Result has 424 places, 877 transitions, 23083 flow [2023-01-28 03:12:04,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=21430, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23083, PETRI_PLACES=424, PETRI_TRANSITIONS=877} [2023-01-28 03:12:04,357 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 404 predicate places. [2023-01-28 03:12:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 877 transitions, 23083 flow [2023-01-28 03:12:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 169.07142857142858) internal successors, (2367), 14 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:04,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:04,358 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:04,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:04,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-01-28 03:12:04,558 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:04,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash 991055867, now seen corresponding path program 47 times [2023-01-28 03:12:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200020046] [2023-01-28 03:12:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:04,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200020046] [2023-01-28 03:12:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200020046] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:04,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800084580] [2023-01-28 03:12:04,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:12:04,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:04,635 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:04,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-01-28 03:12:04,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 03:12:04,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:04,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:04,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:04,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:04,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800084580] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:04,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-01-28 03:12:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292876114] [2023-01-28 03:12:04,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:12:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:12:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:12:04,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:04,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 877 transitions, 23083 flow. Second operand has 15 states, 15 states have (on average 168.8) internal successors, (2532), 15 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:04,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:04,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:06,990 INFO L130 PetriNetUnfolder]: 2459/4964 cut-off events. [2023-01-28 03:12:06,990 INFO L131 PetriNetUnfolder]: For 250906/250906 co-relation queries the response was YES. [2023-01-28 03:12:07,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57350 conditions, 4964 events. 2459/4964 cut-off events. For 250906/250906 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 39471 event pairs, 182 based on Foata normal form. 62/5026 useless extension candidates. Maximal degree in co-relation 57192. Up to 3348 conditions per place. [2023-01-28 03:12:07,054 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 746 selfloop transitions, 307 changer transitions 0/1053 dead transitions. [2023-01-28 03:12:07,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1053 transitions, 29281 flow [2023-01-28 03:12:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 03:12:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 03:12:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3819 transitions. [2023-01-28 03:12:07,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42133715798764343 [2023-01-28 03:12:07,057 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3819 transitions. [2023-01-28 03:12:07,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3819 transitions. [2023-01-28 03:12:07,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:07,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3819 transitions. [2023-01-28 03:12:07,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 173.5909090909091) internal successors, (3819), 22 states have internal predecessors, (3819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:07,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:07,063 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:07,063 INFO L175 Difference]: Start difference. First operand has 424 places, 877 transitions, 23083 flow. Second operand 22 states and 3819 transitions. [2023-01-28 03:12:07,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1053 transitions, 29281 flow [2023-01-28 03:12:09,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1053 transitions, 28712 flow, removed 118 selfloop flow, removed 4 redundant places. [2023-01-28 03:12:09,261 INFO L231 Difference]: Finished difference. Result has 450 places, 951 transitions, 25904 flow [2023-01-28 03:12:09,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=22617, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=25904, PETRI_PLACES=450, PETRI_TRANSITIONS=951} [2023-01-28 03:12:09,262 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 430 predicate places. [2023-01-28 03:12:09,262 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 951 transitions, 25904 flow [2023-01-28 03:12:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.8) internal successors, (2532), 15 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:09,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:09,262 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:09,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-01-28 03:12:09,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-01-28 03:12:09,463 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:09,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2067368727, now seen corresponding path program 48 times [2023-01-28 03:12:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:09,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182464227] [2023-01-28 03:12:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:09,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182464227] [2023-01-28 03:12:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182464227] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655705928] [2023-01-28 03:12:09,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:12:09,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:09,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:09,549 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:09,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-01-28 03:12:09,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:12:09,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:09,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:09,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:09,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655705928] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:09,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-01-28 03:12:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767072653] [2023-01-28 03:12:09,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:12:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:12:09,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:12:09,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:09,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 951 transitions, 25904 flow. Second operand has 16 states, 16 states have (on average 168.75) internal successors, (2700), 16 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:09,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:09,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:09,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:11,831 INFO L130 PetriNetUnfolder]: 2467/5022 cut-off events. [2023-01-28 03:12:11,832 INFO L131 PetriNetUnfolder]: For 269687/269687 co-relation queries the response was YES. [2023-01-28 03:12:11,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59757 conditions, 5022 events. 2467/5022 cut-off events. For 269687/269687 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 40318 event pairs, 391 based on Foata normal form. 24/5046 useless extension candidates. Maximal degree in co-relation 59590. Up to 2025 conditions per place. [2023-01-28 03:12:11,898 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 635 selfloop transitions, 451 changer transitions 12/1098 dead transitions. [2023-01-28 03:12:11,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1098 transitions, 30772 flow [2023-01-28 03:12:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 03:12:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 03:12:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4473 transitions. [2023-01-28 03:12:11,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41756908140403287 [2023-01-28 03:12:11,901 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4473 transitions. [2023-01-28 03:12:11,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4473 transitions. [2023-01-28 03:12:11,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:11,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4473 transitions. [2023-01-28 03:12:11,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 172.03846153846155) internal successors, (4473), 26 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:11,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 412.0) internal successors, (11124), 27 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:11,908 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 412.0) internal successors, (11124), 27 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:11,908 INFO L175 Difference]: Start difference. First operand has 450 places, 951 transitions, 25904 flow. Second operand 26 states and 4473 transitions. [2023-01-28 03:12:11,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 1098 transitions, 30772 flow [2023-01-28 03:12:14,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1098 transitions, 29728 flow, removed 403 selfloop flow, removed 10 redundant places. [2023-01-28 03:12:14,499 INFO L231 Difference]: Finished difference. Result has 470 places, 964 transitions, 26544 flow [2023-01-28 03:12:14,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=24911, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=26544, PETRI_PLACES=470, PETRI_TRANSITIONS=964} [2023-01-28 03:12:14,500 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 450 predicate places. [2023-01-28 03:12:14,500 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 964 transitions, 26544 flow [2023-01-28 03:12:14,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 168.75) internal successors, (2700), 16 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:14,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:14,501 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:14,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-01-28 03:12:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-01-28 03:12:14,705 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:14,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1532439073, now seen corresponding path program 49 times [2023-01-28 03:12:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990845612] [2023-01-28 03:12:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:14,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:14,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:14,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990845612] [2023-01-28 03:12:14,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990845612] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:14,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80082896] [2023-01-28 03:12:14,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:12:14,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:14,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:14,767 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:14,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-01-28 03:12:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:14,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:14,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80082896] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:14,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-01-28 03:12:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257721458] [2023-01-28 03:12:14,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:12:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:12:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:12:14,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:14,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 964 transitions, 26544 flow. Second operand has 15 states, 15 states have (on average 168.93333333333334) internal successors, (2534), 15 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:14,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:14,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:14,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:17,456 INFO L130 PetriNetUnfolder]: 2712/5497 cut-off events. [2023-01-28 03:12:17,457 INFO L131 PetriNetUnfolder]: For 320330/320330 co-relation queries the response was YES. [2023-01-28 03:12:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66845 conditions, 5497 events. 2712/5497 cut-off events. For 320330/320330 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 44732 event pairs, 338 based on Foata normal form. 44/5541 useless extension candidates. Maximal degree in co-relation 66674. Up to 1774 conditions per place. [2023-01-28 03:12:17,536 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 653 selfloop transitions, 534 changer transitions 11/1198 dead transitions. [2023-01-28 03:12:17,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1198 transitions, 34181 flow [2023-01-28 03:12:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 03:12:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 03:12:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4653 transitions. [2023-01-28 03:12:17,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41828478964401294 [2023-01-28 03:12:17,539 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4653 transitions. [2023-01-28 03:12:17,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4653 transitions. [2023-01-28 03:12:17,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:17,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4653 transitions. [2023-01-28 03:12:17,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 172.33333333333334) internal successors, (4653), 27 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:17,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 412.0) internal successors, (11536), 28 states have internal predecessors, (11536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:17,547 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 412.0) internal successors, (11536), 28 states have internal predecessors, (11536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:17,547 INFO L175 Difference]: Start difference. First operand has 470 places, 964 transitions, 26544 flow. Second operand 27 states and 4653 transitions. [2023-01-28 03:12:17,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1198 transitions, 34181 flow [2023-01-28 03:12:20,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1198 transitions, 33264 flow, removed 132 selfloop flow, removed 14 redundant places. [2023-01-28 03:12:20,809 INFO L231 Difference]: Finished difference. Result has 485 places, 1027 transitions, 29279 flow [2023-01-28 03:12:20,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=25364, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=952, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=29279, PETRI_PLACES=485, PETRI_TRANSITIONS=1027} [2023-01-28 03:12:20,810 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 465 predicate places. [2023-01-28 03:12:20,810 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 1027 transitions, 29279 flow [2023-01-28 03:12:20,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.93333333333334) internal successors, (2534), 15 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:20,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:20,811 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:20,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-01-28 03:12:21,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:21,017 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:21,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 141695673, now seen corresponding path program 50 times [2023-01-28 03:12:21,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:21,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125884858] [2023-01-28 03:12:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125884858] [2023-01-28 03:12:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125884858] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552601405] [2023-01-28 03:12:21,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:12:21,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:21,094 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:21,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-01-28 03:12:21,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:12:21,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:21,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:21,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:21,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:21,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552601405] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:21,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:21,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-01-28 03:12:21,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897919340] [2023-01-28 03:12:21,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:12:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:21,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:12:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:12:21,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:21,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 1027 transitions, 29279 flow. Second operand has 15 states, 15 states have (on average 168.8) internal successors, (2532), 15 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:21,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:21,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:21,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:23,975 INFO L130 PetriNetUnfolder]: 2655/5348 cut-off events. [2023-01-28 03:12:23,975 INFO L131 PetriNetUnfolder]: For 315845/315845 co-relation queries the response was YES. [2023-01-28 03:12:24,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65883 conditions, 5348 events. 2655/5348 cut-off events. For 315845/315845 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 43038 event pairs, 66 based on Foata normal form. 20/5368 useless extension candidates. Maximal degree in co-relation 65710. Up to 1475 conditions per place. [2023-01-28 03:12:24,044 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 632 selfloop transitions, 495 changer transitions 5/1132 dead transitions. [2023-01-28 03:12:24,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1132 transitions, 33907 flow [2023-01-28 03:12:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 03:12:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 03:12:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4813 transitions. [2023-01-28 03:12:24,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41721567267683773 [2023-01-28 03:12:24,047 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4813 transitions. [2023-01-28 03:12:24,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4813 transitions. [2023-01-28 03:12:24,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:24,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4813 transitions. [2023-01-28 03:12:24,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 171.89285714285714) internal successors, (4813), 28 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:24,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 412.0) internal successors, (11948), 29 states have internal predecessors, (11948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:24,054 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 412.0) internal successors, (11948), 29 states have internal predecessors, (11948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:24,054 INFO L175 Difference]: Start difference. First operand has 485 places, 1027 transitions, 29279 flow. Second operand 28 states and 4813 transitions. [2023-01-28 03:12:24,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1132 transitions, 33907 flow [2023-01-28 03:12:27,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1132 transitions, 32686 flow, removed 397 selfloop flow, removed 15 redundant places. [2023-01-28 03:12:27,123 INFO L231 Difference]: Finished difference. Result has 499 places, 1044 transitions, 30195 flow [2023-01-28 03:12:27,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=27851, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=30195, PETRI_PLACES=499, PETRI_TRANSITIONS=1044} [2023-01-28 03:12:27,124 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 479 predicate places. [2023-01-28 03:12:27,124 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 1044 transitions, 30195 flow [2023-01-28 03:12:27,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.8) internal successors, (2532), 15 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:27,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:27,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:27,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:27,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:27,325 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:27,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1528904067, now seen corresponding path program 51 times [2023-01-28 03:12:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238355155] [2023-01-28 03:12:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238355155] [2023-01-28 03:12:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238355155] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451906346] [2023-01-28 03:12:27,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:12:27,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:27,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:27,397 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:27,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-01-28 03:12:27,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 03:12:27,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:27,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:27,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:27,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451906346] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:27,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-01-28 03:12:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070819060] [2023-01-28 03:12:27,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:12:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:12:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:12:27,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:27,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 1044 transitions, 30195 flow. Second operand has 15 states, 15 states have (on average 168.86666666666667) internal successors, (2533), 15 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:27,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:27,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:27,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:30,626 INFO L130 PetriNetUnfolder]: 2961/5996 cut-off events. [2023-01-28 03:12:30,626 INFO L131 PetriNetUnfolder]: For 380651/380651 co-relation queries the response was YES. [2023-01-28 03:12:30,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75386 conditions, 5996 events. 2961/5996 cut-off events. For 380651/380651 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 49302 event pairs, 550 based on Foata normal form. 36/6032 useless extension candidates. Maximal degree in co-relation 75210. Up to 2610 conditions per place. [2023-01-28 03:12:30,715 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 793 selfloop transitions, 491 changer transitions 1/1285 dead transitions. [2023-01-28 03:12:30,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1285 transitions, 39499 flow [2023-01-28 03:12:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 03:12:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 03:12:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3805 transitions. [2023-01-28 03:12:30,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419792586054722 [2023-01-28 03:12:30,718 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3805 transitions. [2023-01-28 03:12:30,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3805 transitions. [2023-01-28 03:12:30,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:30,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3805 transitions. [2023-01-28 03:12:30,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 172.95454545454547) internal successors, (3805), 22 states have internal predecessors, (3805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:30,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:30,900 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:30,900 INFO L175 Difference]: Start difference. First operand has 499 places, 1044 transitions, 30195 flow. Second operand 22 states and 3805 transitions. [2023-01-28 03:12:30,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1285 transitions, 39499 flow [2023-01-28 03:12:34,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 1285 transitions, 37168 flow, removed 750 selfloop flow, removed 13 redundant places. [2023-01-28 03:12:34,593 INFO L231 Difference]: Finished difference. Result has 513 places, 1128 transitions, 32628 flow [2023-01-28 03:12:34,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=28071, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=32628, PETRI_PLACES=513, PETRI_TRANSITIONS=1128} [2023-01-28 03:12:34,594 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 493 predicate places. [2023-01-28 03:12:34,594 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 1128 transitions, 32628 flow [2023-01-28 03:12:34,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.86666666666667) internal successors, (2533), 15 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:34,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:34,595 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:34,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-01-28 03:12:34,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:34,800 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:34,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1593843127, now seen corresponding path program 52 times [2023-01-28 03:12:34,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892905865] [2023-01-28 03:12:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892905865] [2023-01-28 03:12:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892905865] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457488162] [2023-01-28 03:12:34,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:12:34,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:34,869 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:34,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-01-28 03:12:34,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:12:34,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:34,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:34,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:35,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457488162] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:35,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-01-28 03:12:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534300588] [2023-01-28 03:12:35,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:35,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:12:35,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:12:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:12:35,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:35,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1128 transitions, 32628 flow. Second operand has 15 states, 15 states have (on average 168.93333333333334) internal successors, (2534), 15 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:35,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:35,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:38,169 INFO L130 PetriNetUnfolder]: 2885/5874 cut-off events. [2023-01-28 03:12:38,169 INFO L131 PetriNetUnfolder]: For 355261/355261 co-relation queries the response was YES. [2023-01-28 03:12:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73058 conditions, 5874 events. 2885/5874 cut-off events. For 355261/355261 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 48233 event pairs, 326 based on Foata normal form. 64/5938 useless extension candidates. Maximal degree in co-relation 72878. Up to 1686 conditions per place. [2023-01-28 03:12:38,243 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 680 selfloop transitions, 604 changer transitions 12/1296 dead transitions. [2023-01-28 03:12:38,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1296 transitions, 38795 flow [2023-01-28 03:12:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-28 03:12:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-28 03:12:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5334 transitions. [2023-01-28 03:12:38,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176323207015346 [2023-01-28 03:12:38,246 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5334 transitions. [2023-01-28 03:12:38,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5334 transitions. [2023-01-28 03:12:38,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:38,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5334 transitions. [2023-01-28 03:12:38,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 172.06451612903226) internal successors, (5334), 31 states have internal predecessors, (5334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:38,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 412.0) internal successors, (13184), 32 states have internal predecessors, (13184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:38,254 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 412.0) internal successors, (13184), 32 states have internal predecessors, (13184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:38,254 INFO L175 Difference]: Start difference. First operand has 513 places, 1128 transitions, 32628 flow. Second operand 31 states and 5334 transitions. [2023-01-28 03:12:38,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1296 transitions, 38795 flow [2023-01-28 03:12:41,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1296 transitions, 38048 flow, removed 293 selfloop flow, removed 10 redundant places. [2023-01-28 03:12:41,799 INFO L231 Difference]: Finished difference. Result has 533 places, 1126 transitions, 33730 flow [2023-01-28 03:12:41,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=31261, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=579, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=33730, PETRI_PLACES=533, PETRI_TRANSITIONS=1126} [2023-01-28 03:12:41,800 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 513 predicate places. [2023-01-28 03:12:41,801 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 1126 transitions, 33730 flow [2023-01-28 03:12:41,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.93333333333334) internal successors, (2534), 15 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:41,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:41,801 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:41,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:42,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-01-28 03:12:42,006 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:42,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash 578571649, now seen corresponding path program 53 times [2023-01-28 03:12:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:42,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301977274] [2023-01-28 03:12:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:42,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301977274] [2023-01-28 03:12:42,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301977274] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182073201] [2023-01-28 03:12:42,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:12:42,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:42,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:42,079 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:42,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-01-28 03:12:42,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:12:42,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:42,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:42,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:42,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:42,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182073201] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:42,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:42,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-01-28 03:12:42,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728099031] [2023-01-28 03:12:42,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:42,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:12:42,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:42,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:12:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:12:42,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:42,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1126 transitions, 33730 flow. Second operand has 18 states, 18 states have (on average 169.05555555555554) internal successors, (3043), 18 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:42,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:42,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:42,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:45,873 INFO L130 PetriNetUnfolder]: 3350/6697 cut-off events. [2023-01-28 03:12:45,873 INFO L131 PetriNetUnfolder]: For 413277/413277 co-relation queries the response was YES. [2023-01-28 03:12:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85488 conditions, 6697 events. 3350/6697 cut-off events. For 413277/413277 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55449 event pairs, 288 based on Foata normal form. 78/6775 useless extension candidates. Maximal degree in co-relation 85306. Up to 5716 conditions per place. [2023-01-28 03:12:45,973 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1144 selfloop transitions, 226 changer transitions 0/1370 dead transitions. [2023-01-28 03:12:45,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1370 transitions, 42462 flow [2023-01-28 03:12:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 03:12:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 03:12:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3472 transitions. [2023-01-28 03:12:45,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42135922330097086 [2023-01-28 03:12:45,976 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3472 transitions. [2023-01-28 03:12:45,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3472 transitions. [2023-01-28 03:12:45,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:45,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3472 transitions. [2023-01-28 03:12:45,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 173.6) internal successors, (3472), 20 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:45,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 412.0) internal successors, (8652), 21 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:45,982 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 412.0) internal successors, (8652), 21 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:45,982 INFO L175 Difference]: Start difference. First operand has 533 places, 1126 transitions, 33730 flow. Second operand 20 states and 3472 transitions. [2023-01-28 03:12:45,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 1370 transitions, 42462 flow [2023-01-28 03:12:50,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1370 transitions, 41117 flow, removed 337 selfloop flow, removed 20 redundant places. [2023-01-28 03:12:50,421 INFO L231 Difference]: Finished difference. Result has 540 places, 1281 transitions, 37880 flow [2023-01-28 03:12:50,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=32406, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=37880, PETRI_PLACES=540, PETRI_TRANSITIONS=1281} [2023-01-28 03:12:50,423 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 520 predicate places. [2023-01-28 03:12:50,423 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1281 transitions, 37880 flow [2023-01-28 03:12:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 169.05555555555554) internal successors, (3043), 18 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:50,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:50,423 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:50,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-01-28 03:12:50,624 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:50,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 240245433, now seen corresponding path program 54 times [2023-01-28 03:12:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061643938] [2023-01-28 03:12:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:50,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061643938] [2023-01-28 03:12:50,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061643938] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955929642] [2023-01-28 03:12:50,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:12:50,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:50,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:50,684 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:12:50,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-01-28 03:12:50,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 03:12:50,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:12:50,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:50,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:50,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955929642] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:50,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:12:50,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-01-28 03:12:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162486298] [2023-01-28 03:12:50,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:50,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:12:50,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:12:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:12:50,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:12:50,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1281 transitions, 37880 flow. Second operand has 15 states, 15 states have (on average 168.86666666666667) internal successors, (2533), 15 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:50,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:50,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:12:50,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:55,315 INFO L130 PetriNetUnfolder]: 3832/7695 cut-off events. [2023-01-28 03:12:55,316 INFO L131 PetriNetUnfolder]: For 499496/499496 co-relation queries the response was YES. [2023-01-28 03:12:55,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99848 conditions, 7695 events. 3832/7695 cut-off events. For 499496/499496 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 65821 event pairs, 166 based on Foata normal form. 166/7861 useless extension candidates. Maximal degree in co-relation 99656. Up to 3135 conditions per place. [2023-01-28 03:12:55,499 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 879 selfloop transitions, 676 changer transitions 1/1556 dead transitions. [2023-01-28 03:12:55,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1556 transitions, 49153 flow [2023-01-28 03:12:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 03:12:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 03:12:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3986 transitions. [2023-01-28 03:12:55,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206416209371043 [2023-01-28 03:12:55,503 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3986 transitions. [2023-01-28 03:12:55,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3986 transitions. [2023-01-28 03:12:55,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:55,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3986 transitions. [2023-01-28 03:12:55,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 173.30434782608697) internal successors, (3986), 23 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:55,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 412.0) internal successors, (9888), 24 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:55,510 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 412.0) internal successors, (9888), 24 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:12:55,510 INFO L175 Difference]: Start difference. First operand has 540 places, 1281 transitions, 37880 flow. Second operand 23 states and 3986 transitions. [2023-01-28 03:12:55,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1556 transitions, 49153 flow [2023-01-28 03:13:01,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1556 transitions, 48246 flow, removed 318 selfloop flow, removed 7 redundant places. [2023-01-28 03:13:01,124 INFO L231 Difference]: Finished difference. Result has 560 places, 1416 transitions, 44202 flow [2023-01-28 03:13:01,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=36719, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=44202, PETRI_PLACES=560, PETRI_TRANSITIONS=1416} [2023-01-28 03:13:01,125 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 540 predicate places. [2023-01-28 03:13:01,125 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 1416 transitions, 44202 flow [2023-01-28 03:13:01,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.86666666666667) internal successors, (2533), 15 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:01,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:01,126 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:01,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-01-28 03:13:01,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:01,331 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:13:01,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1169476999, now seen corresponding path program 55 times [2023-01-28 03:13:01,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:01,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549928892] [2023-01-28 03:13:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:01,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:01,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549928892] [2023-01-28 03:13:01,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549928892] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:01,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293163216] [2023-01-28 03:13:01,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:13:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:01,413 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:13:01,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-01-28 03:13:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:01,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:13:01,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:01,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:13:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293163216] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:13:01,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:13:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-01-28 03:13:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785185087] [2023-01-28 03:13:01,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:13:01,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:13:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:13:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:13:01,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:13:01,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1416 transitions, 44202 flow. Second operand has 16 states, 16 states have (on average 168.75) internal successors, (2700), 16 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:01,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:01,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:13:01,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:06,509 INFO L130 PetriNetUnfolder]: 3871/7710 cut-off events. [2023-01-28 03:13:06,509 INFO L131 PetriNetUnfolder]: For 531496/531496 co-relation queries the response was YES. [2023-01-28 03:13:06,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103760 conditions, 7710 events. 3871/7710 cut-off events. For 531496/531496 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 65452 event pairs, 158 based on Foata normal form. 50/7760 useless extension candidates. Maximal degree in co-relation 103564. Up to 2496 conditions per place. [2023-01-28 03:13:06,615 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 739 selfloop transitions, 795 changer transitions 15/1549 dead transitions. [2023-01-28 03:13:06,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1549 transitions, 50834 flow [2023-01-28 03:13:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-28 03:13:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-28 03:13:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5318 transitions. [2023-01-28 03:13:06,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163795803319762 [2023-01-28 03:13:06,618 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5318 transitions. [2023-01-28 03:13:06,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5318 transitions. [2023-01-28 03:13:06,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:06,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5318 transitions. [2023-01-28 03:13:06,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 171.5483870967742) internal successors, (5318), 31 states have internal predecessors, (5318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:06,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 412.0) internal successors, (13184), 32 states have internal predecessors, (13184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:06,626 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 412.0) internal successors, (13184), 32 states have internal predecessors, (13184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:06,626 INFO L175 Difference]: Start difference. First operand has 560 places, 1416 transitions, 44202 flow. Second operand 31 states and 5318 transitions. [2023-01-28 03:13:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 1549 transitions, 50834 flow [2023-01-28 03:13:12,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1549 transitions, 49512 flow, removed 413 selfloop flow, removed 16 redundant places. [2023-01-28 03:13:13,003 INFO L231 Difference]: Finished difference. Result has 580 places, 1443 transitions, 46817 flow [2023-01-28 03:13:13,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=42222, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=738, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=46817, PETRI_PLACES=580, PETRI_TRANSITIONS=1443} [2023-01-28 03:13:13,004 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 560 predicate places. [2023-01-28 03:13:13,004 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 1443 transitions, 46817 flow [2023-01-28 03:13:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 168.75) internal successors, (2700), 16 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:13,005 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:13,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-01-28 03:13:13,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:13,210 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:13:13,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1133843129, now seen corresponding path program 56 times [2023-01-28 03:13:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:13,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879236985] [2023-01-28 03:13:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879236985] [2023-01-28 03:13:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879236985] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966703713] [2023-01-28 03:13:13,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:13:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:13,281 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:13:13,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-01-28 03:13:13,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:13:13,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:13:13,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:13:13,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:13,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:13:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966703713] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:13:13,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:13:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-01-28 03:13:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661008211] [2023-01-28 03:13:13,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:13:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:13:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:13:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:13:13,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:13:13,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 1443 transitions, 46817 flow. Second operand has 20 states, 20 states have (on average 168.55) internal successors, (3371), 20 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:13,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:13,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:13:13,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:18,645 INFO L130 PetriNetUnfolder]: 4126/8265 cut-off events. [2023-01-28 03:13:18,645 INFO L131 PetriNetUnfolder]: For 609088/609088 co-relation queries the response was YES. [2023-01-28 03:13:18,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114945 conditions, 8265 events. 4126/8265 cut-off events. For 609088/609088 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 71258 event pairs, 180 based on Foata normal form. 40/8305 useless extension candidates. Maximal degree in co-relation 114748. Up to 2325 conditions per place. [2023-01-28 03:13:18,775 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 712 selfloop transitions, 916 changer transitions 20/1648 dead transitions. [2023-01-28 03:13:18,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 1648 transitions, 56577 flow [2023-01-28 03:13:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-28 03:13:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-28 03:13:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5834 transitions. [2023-01-28 03:13:18,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41647629925756713 [2023-01-28 03:13:18,779 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5834 transitions. [2023-01-28 03:13:18,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5834 transitions. [2023-01-28 03:13:18,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:18,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5834 transitions. [2023-01-28 03:13:18,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 171.58823529411765) internal successors, (5834), 34 states have internal predecessors, (5834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:18,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 412.0) internal successors, (14420), 35 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:18,789 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 412.0) internal successors, (14420), 35 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:18,789 INFO L175 Difference]: Start difference. First operand has 580 places, 1443 transitions, 46817 flow. Second operand 34 states and 5834 transitions. [2023-01-28 03:13:18,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 1648 transitions, 56577 flow [2023-01-28 03:13:27,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 1648 transitions, 55166 flow, removed 592 selfloop flow, removed 14 redundant places. [2023-01-28 03:13:27,372 INFO L231 Difference]: Finished difference. Result has 604 places, 1531 transitions, 52715 flow [2023-01-28 03:13:27,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=45212, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=829, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=52715, PETRI_PLACES=604, PETRI_TRANSITIONS=1531} [2023-01-28 03:13:27,373 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 584 predicate places. [2023-01-28 03:13:27,373 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1531 transitions, 52715 flow [2023-01-28 03:13:27,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 168.55) internal successors, (3371), 20 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:27,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:27,373 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:27,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-01-28 03:13:27,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-01-28 03:13:27,574 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:13:27,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1710707121, now seen corresponding path program 57 times [2023-01-28 03:13:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722623367] [2023-01-28 03:13:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:27,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722623367] [2023-01-28 03:13:27,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722623367] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016376267] [2023-01-28 03:13:27,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:13:27,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:27,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:27,641 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:13:27,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-01-28 03:13:27,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 03:13:27,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:13:27,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:13:27,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:27,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:13:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:27,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016376267] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:13:27,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:13:27,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-01-28 03:13:27,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614723708] [2023-01-28 03:13:27,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:13:27,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:13:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:13:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:13:27,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:13:27,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1531 transitions, 52715 flow. Second operand has 17 states, 17 states have (on average 168.94117647058823) internal successors, (2872), 17 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:27,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:27,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:13:27,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:34,376 INFO L130 PetriNetUnfolder]: 4921/9910 cut-off events. [2023-01-28 03:13:34,376 INFO L131 PetriNetUnfolder]: For 806267/806267 co-relation queries the response was YES. [2023-01-28 03:13:34,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143672 conditions, 9910 events. 4921/9910 cut-off events. For 806267/806267 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 88796 event pairs, 210 based on Foata normal form. 42/9952 useless extension candidates. Maximal degree in co-relation 143470. Up to 3017 conditions per place. [2023-01-28 03:13:34,545 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 946 selfloop transitions, 984 changer transitions 0/1930 dead transitions. [2023-01-28 03:13:34,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1930 transitions, 70216 flow [2023-01-28 03:13:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 03:13:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 03:13:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4160 transitions. [2023-01-28 03:13:34,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42071197411003236 [2023-01-28 03:13:34,548 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4160 transitions. [2023-01-28 03:13:34,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4160 transitions. [2023-01-28 03:13:34,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:34,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4160 transitions. [2023-01-28 03:13:34,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 173.33333333333334) internal successors, (4160), 24 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:34,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 412.0) internal successors, (10300), 25 states have internal predecessors, (10300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:34,555 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 412.0) internal successors, (10300), 25 states have internal predecessors, (10300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:34,555 INFO L175 Difference]: Start difference. First operand has 604 places, 1531 transitions, 52715 flow. Second operand 24 states and 4160 transitions. [2023-01-28 03:13:34,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1930 transitions, 70216 flow [2023-01-28 03:13:47,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 1930 transitions, 68114 flow, removed 886 selfloop flow, removed 14 redundant places. [2023-01-28 03:13:47,179 INFO L231 Difference]: Finished difference. Result has 614 places, 1764 transitions, 63542 flow [2023-01-28 03:13:47,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=50405, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=770, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=63542, PETRI_PLACES=614, PETRI_TRANSITIONS=1764} [2023-01-28 03:13:47,180 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 594 predicate places. [2023-01-28 03:13:47,180 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 1764 transitions, 63542 flow [2023-01-28 03:13:47,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.94117647058823) internal successors, (2872), 17 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:47,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:47,180 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:47,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-01-28 03:13:47,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-01-28 03:13:47,381 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:13:47,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash 695910137, now seen corresponding path program 58 times [2023-01-28 03:13:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:47,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148226111] [2023-01-28 03:13:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148226111] [2023-01-28 03:13:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148226111] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587827665] [2023-01-28 03:13:47,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:13:47,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:47,457 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:13:47,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-01-28 03:13:47,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:13:47,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:13:47,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:13:47,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:47,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:13:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587827665] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:13:47,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:13:47,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-01-28 03:13:47,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746225247] [2023-01-28 03:13:47,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:13:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:13:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:13:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:13:47,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:13:47,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1764 transitions, 63542 flow. Second operand has 14 states, 14 states have (on average 168.85714285714286) internal successors, (2364), 14 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:47,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:47,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:13:47,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:55,176 INFO L130 PetriNetUnfolder]: 5132/10371 cut-off events. [2023-01-28 03:13:55,176 INFO L131 PetriNetUnfolder]: For 847197/847197 co-relation queries the response was YES. [2023-01-28 03:13:55,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151560 conditions, 10371 events. 5132/10371 cut-off events. For 847197/847197 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 93994 event pairs, 866 based on Foata normal form. 2/10373 useless extension candidates. Maximal degree in co-relation 151352. Up to 5072 conditions per place. [2023-01-28 03:13:55,446 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1206 selfloop transitions, 681 changer transitions 7/1894 dead transitions. [2023-01-28 03:13:55,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 1894 transitions, 70985 flow [2023-01-28 03:13:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:13:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:13:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2403 transitions. [2023-01-28 03:13:55,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41660887656033285 [2023-01-28 03:13:55,448 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2403 transitions. [2023-01-28 03:13:55,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2403 transitions. [2023-01-28 03:13:55,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:55,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2403 transitions. [2023-01-28 03:13:55,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 171.64285714285714) internal successors, (2403), 14 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,452 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 412.0) internal successors, (6180), 15 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,452 INFO L175 Difference]: Start difference. First operand has 614 places, 1764 transitions, 63542 flow. Second operand 14 states and 2403 transitions. [2023-01-28 03:13:55,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 1894 transitions, 70985 flow [2023-01-28 03:14:09,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 1894 transitions, 69549 flow, removed 603 selfloop flow, removed 12 redundant places. [2023-01-28 03:14:09,235 INFO L231 Difference]: Finished difference. Result has 621 places, 1839 transitions, 66647 flow [2023-01-28 03:14:09,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=62147, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=605, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=66647, PETRI_PLACES=621, PETRI_TRANSITIONS=1839} [2023-01-28 03:14:09,236 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 601 predicate places. [2023-01-28 03:14:09,237 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 1839 transitions, 66647 flow [2023-01-28 03:14:09,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 168.85714285714286) internal successors, (2364), 14 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:09,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:09,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:09,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:09,438 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:14:09,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash 644662819, now seen corresponding path program 59 times [2023-01-28 03:14:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:09,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439940161] [2023-01-28 03:14:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:09,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439940161] [2023-01-28 03:14:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439940161] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145244268] [2023-01-28 03:14:09,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:14:09,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:09,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:09,499 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:09,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-01-28 03:14:09,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:14:09,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:09,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:14:09,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:09,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145244268] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:09,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-01-28 03:14:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443337278] [2023-01-28 03:14:09,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:14:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:14:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:14:09,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:14:09,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1839 transitions, 66647 flow. Second operand has 14 states, 14 states have (on average 168.85714285714286) internal successors, (2364), 14 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:09,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:09,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:14:09,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:17,511 INFO L130 PetriNetUnfolder]: 5258/10573 cut-off events. [2023-01-28 03:14:17,511 INFO L131 PetriNetUnfolder]: For 821197/821197 co-relation queries the response was YES. [2023-01-28 03:14:17,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154480 conditions, 10573 events. 5258/10573 cut-off events. For 821197/821197 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 95639 event pairs, 221 based on Foata normal form. 30/10603 useless extension candidates. Maximal degree in co-relation 154268. Up to 7874 conditions per place. [2023-01-28 03:14:17,681 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 1433 selfloop transitions, 517 changer transitions 0/1950 dead transitions. [2023-01-28 03:14:17,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1950 transitions, 73556 flow [2023-01-28 03:14:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1561 transitions. [2023-01-28 03:14:17,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209816612729234 [2023-01-28 03:14:17,682 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1561 transitions. [2023-01-28 03:14:17,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1561 transitions. [2023-01-28 03:14:17,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:17,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1561 transitions. [2023-01-28 03:14:17,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 173.44444444444446) internal successors, (1561), 9 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:17,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:17,685 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:17,685 INFO L175 Difference]: Start difference. First operand has 621 places, 1839 transitions, 66647 flow. Second operand 9 states and 1561 transitions. [2023-01-28 03:14:17,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1950 transitions, 73556 flow [2023-01-28 03:14:32,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 1950 transitions, 72812 flow, removed 121 selfloop flow, removed 9 redundant places. [2023-01-28 03:14:32,298 INFO L231 Difference]: Finished difference. Result has 621 places, 1888 transitions, 68972 flow [2023-01-28 03:14:32,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=65904, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=68972, PETRI_PLACES=621, PETRI_TRANSITIONS=1888} [2023-01-28 03:14:32,300 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 601 predicate places. [2023-01-28 03:14:32,300 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 1888 transitions, 68972 flow [2023-01-28 03:14:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 168.85714285714286) internal successors, (2364), 14 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:32,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:32,300 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:32,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:32,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-01-28 03:14:32,501 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:14:32,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2004137547, now seen corresponding path program 60 times [2023-01-28 03:14:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:32,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728767615] [2023-01-28 03:14:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728767615] [2023-01-28 03:14:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728767615] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365083017] [2023-01-28 03:14:32,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:14:32,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:32,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:32,567 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:32,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-01-28 03:14:32,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:14:32,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:32,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:14:32,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:32,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365083017] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:32,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-01-28 03:14:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572159582] [2023-01-28 03:14:32,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:14:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:14:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:14:32,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:14:32,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1888 transitions, 68972 flow. Second operand has 16 states, 16 states have (on average 168.8125) internal successors, (2701), 16 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:32,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:32,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:14:32,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:41,995 INFO L130 PetriNetUnfolder]: 5548/11175 cut-off events. [2023-01-28 03:14:41,996 INFO L131 PetriNetUnfolder]: For 880610/880610 co-relation queries the response was YES. [2023-01-28 03:14:42,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164192 conditions, 11175 events. 5548/11175 cut-off events. For 880610/880610 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 102302 event pairs, 795 based on Foata normal form. 16/11191 useless extension candidates. Maximal degree in co-relation 163980. Up to 3253 conditions per place. [2023-01-28 03:14:42,163 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1261 selfloop transitions, 825 changer transitions 10/2096 dead transitions. [2023-01-28 03:14:42,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 2096 transitions, 78971 flow [2023-01-28 03:14:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 03:14:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 03:14:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4129 transitions. [2023-01-28 03:14:42,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175768608414239 [2023-01-28 03:14:42,165 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4129 transitions. [2023-01-28 03:14:42,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4129 transitions. [2023-01-28 03:14:42,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:42,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4129 transitions. [2023-01-28 03:14:42,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 172.04166666666666) internal successors, (4129), 24 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:42,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 412.0) internal successors, (10300), 25 states have internal predecessors, (10300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:42,171 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 412.0) internal successors, (10300), 25 states have internal predecessors, (10300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:42,172 INFO L175 Difference]: Start difference. First operand has 621 places, 1888 transitions, 68972 flow. Second operand 24 states and 4129 transitions. [2023-01-28 03:14:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 2096 transitions, 78971 flow [2023-01-28 03:14:57,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 2096 transitions, 78314 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-28 03:14:57,921 INFO L231 Difference]: Finished difference. Result has 648 places, 1982 transitions, 74899 flow [2023-01-28 03:14:57,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=68185, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=74899, PETRI_PLACES=648, PETRI_TRANSITIONS=1982} [2023-01-28 03:14:57,922 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 628 predicate places. [2023-01-28 03:14:57,922 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 1982 transitions, 74899 flow [2023-01-28 03:14:57,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 168.8125) internal successors, (2701), 16 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:57,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:57,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:57,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:58,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:58,124 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:14:58,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2099469555, now seen corresponding path program 61 times [2023-01-28 03:14:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:58,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059805234] [2023-01-28 03:14:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:58,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:58,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059805234] [2023-01-28 03:14:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059805234] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899159668] [2023-01-28 03:14:58,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:14:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:58,188 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:58,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-01-28 03:14:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:58,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:14:58,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:58,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899159668] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:58,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:58,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-01-28 03:14:58,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816601913] [2023-01-28 03:14:58,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:58,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:14:58,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:14:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:14:58,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:14:58,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 1982 transitions, 74899 flow. Second operand has 18 states, 18 states have (on average 168.66666666666666) internal successors, (3036), 18 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:58,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:58,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:14:58,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:07,897 INFO L130 PetriNetUnfolder]: 5625/11332 cut-off events. [2023-01-28 03:15:07,897 INFO L131 PetriNetUnfolder]: For 987381/987381 co-relation queries the response was YES. [2023-01-28 03:15:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172202 conditions, 11332 events. 5625/11332 cut-off events. For 987381/987381 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 103934 event pairs, 833 based on Foata normal form. 8/11340 useless extension candidates. Maximal degree in co-relation 171982. Up to 3527 conditions per place. [2023-01-28 03:15:08,091 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1284 selfloop transitions, 835 changer transitions 8/2127 dead transitions. [2023-01-28 03:15:08,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 2127 transitions, 83076 flow [2023-01-28 03:15:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 03:15:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 03:15:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5490 transitions. [2023-01-28 03:15:08,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164138349514563 [2023-01-28 03:15:08,094 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5490 transitions. [2023-01-28 03:15:08,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5490 transitions. [2023-01-28 03:15:08,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:15:08,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5490 transitions. [2023-01-28 03:15:08,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 171.5625) internal successors, (5490), 32 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:08,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 412.0) internal successors, (13596), 33 states have internal predecessors, (13596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:08,102 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 412.0) internal successors, (13596), 33 states have internal predecessors, (13596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:08,102 INFO L175 Difference]: Start difference. First operand has 648 places, 1982 transitions, 74899 flow. Second operand 32 states and 5490 transitions. [2023-01-28 03:15:08,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 2127 transitions, 83076 flow [2023-01-28 03:15:27,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 2127 transitions, 81458 flow, removed 723 selfloop flow, removed 10 redundant places. [2023-01-28 03:15:27,616 INFO L231 Difference]: Finished difference. Result has 676 places, 2029 transitions, 78721 flow [2023-01-28 03:15:27,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=73772, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=782, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=78721, PETRI_PLACES=676, PETRI_TRANSITIONS=2029} [2023-01-28 03:15:27,617 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 656 predicate places. [2023-01-28 03:15:27,617 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 2029 transitions, 78721 flow [2023-01-28 03:15:27,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.66666666666666) internal successors, (3036), 18 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:27,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:15:27,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:15:27,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-01-28 03:15:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:27,818 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:15:27,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:15:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -265543753, now seen corresponding path program 62 times [2023-01-28 03:15:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:15:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008049036] [2023-01-28 03:15:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:15:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:27,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:27,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008049036] [2023-01-28 03:15:27,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008049036] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:15:27,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703805661] [2023-01-28 03:15:27,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:15:27,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:27,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:15:27,896 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:15:27,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-01-28 03:15:28,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:15:28,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:15:28,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:15:28,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:15:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:28,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:15:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:15:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703805661] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:28,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:15:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 15 [2023-01-28 03:15:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621611113] [2023-01-28 03:15:28,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:15:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:15:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:15:28,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:15:28,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 2029 transitions, 78721 flow. Second operand has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:28,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:28,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:15:28,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:37,717 INFO L130 PetriNetUnfolder]: 5655/11394 cut-off events. [2023-01-28 03:15:37,717 INFO L131 PetriNetUnfolder]: For 1054436/1054436 co-relation queries the response was YES. [2023-01-28 03:15:37,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176386 conditions, 11394 events. 5655/11394 cut-off events. For 1054436/1054436 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 104754 event pairs, 2166 based on Foata normal form. 62/11456 useless extension candidates. Maximal degree in co-relation 176160. Up to 10806 conditions per place. [2023-01-28 03:15:37,910 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1979 selfloop transitions, 118 changer transitions 2/2099 dead transitions. [2023-01-28 03:15:37,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 2099 transitions, 84431 flow [2023-01-28 03:15:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 03:15:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 03:15:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2771 transitions. [2023-01-28 03:15:37,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203580097087379 [2023-01-28 03:15:37,912 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2771 transitions. [2023-01-28 03:15:37,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2771 transitions. [2023-01-28 03:15:37,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:15:37,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2771 transitions. [2023-01-28 03:15:37,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 173.1875) internal successors, (2771), 16 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:37,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 412.0) internal successors, (7004), 17 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:37,917 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 412.0) internal successors, (7004), 17 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:37,917 INFO L175 Difference]: Start difference. First operand has 676 places, 2029 transitions, 78721 flow. Second operand 16 states and 2771 transitions. [2023-01-28 03:15:37,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 2099 transitions, 84431 flow [2023-01-28 03:15:59,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 2099 transitions, 82952 flow, removed 499 selfloop flow, removed 16 redundant places. [2023-01-28 03:15:59,427 INFO L231 Difference]: Finished difference. Result has 678 places, 2036 transitions, 77993 flow [2023-01-28 03:15:59,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=77045, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1899, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=77993, PETRI_PLACES=678, PETRI_TRANSITIONS=2036} [2023-01-28 03:15:59,428 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 658 predicate places. [2023-01-28 03:15:59,428 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 2036 transitions, 77993 flow [2023-01-28 03:15:59,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:59,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:15:59,429 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:15:59,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-01-28 03:15:59,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-01-28 03:15:59,629 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:15:59,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:15:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1180036555, now seen corresponding path program 63 times [2023-01-28 03:15:59,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:15:59,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342370448] [2023-01-28 03:15:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:15:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342370448] [2023-01-28 03:15:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342370448] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:15:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487529417] [2023-01-28 03:15:59,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:15:59,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:59,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:15:59,706 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:15:59,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-01-28 03:15:59,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:15:59,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:15:59,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:15:59,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:15:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:59,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:15:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:59,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487529417] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:59,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:15:59,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-01-28 03:15:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91381711] [2023-01-28 03:15:59,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:59,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:15:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:15:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:15:59,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:15:59,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 2036 transitions, 77993 flow. Second operand has 15 states, 15 states have (on average 168.93333333333334) internal successors, (2534), 15 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:59,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:59,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:15:59,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:16:09,927 INFO L130 PetriNetUnfolder]: 5740/11503 cut-off events. [2023-01-28 03:16:09,927 INFO L131 PetriNetUnfolder]: For 1078291/1078291 co-relation queries the response was YES. [2023-01-28 03:16:10,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178113 conditions, 11503 events. 5740/11503 cut-off events. For 1078291/1078291 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 105191 event pairs, 511 based on Foata normal form. 86/11589 useless extension candidates. Maximal degree in co-relation 177882. Up to 9927 conditions per place. [2023-01-28 03:16:10,226 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1806 selfloop transitions, 360 changer transitions 2/2168 dead transitions. [2023-01-28 03:16:10,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 2168 transitions, 86315 flow [2023-01-28 03:16:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 03:16:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 03:16:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3617 transitions. [2023-01-28 03:16:10,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180536292186778 [2023-01-28 03:16:10,228 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3617 transitions. [2023-01-28 03:16:10,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3617 transitions. [2023-01-28 03:16:10,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:16:10,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3617 transitions. [2023-01-28 03:16:10,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 172.23809523809524) internal successors, (3617), 21 states have internal predecessors, (3617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:10,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 412.0) internal successors, (9064), 22 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:10,234 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 412.0) internal successors, (9064), 22 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:10,234 INFO L175 Difference]: Start difference. First operand has 678 places, 2036 transitions, 77993 flow. Second operand 21 states and 3617 transitions. [2023-01-28 03:16:10,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 2168 transitions, 86315 flow [2023-01-28 03:16:33,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 2168 transitions, 86022 flow, removed 93 selfloop flow, removed 5 redundant places. [2023-01-28 03:16:33,131 INFO L231 Difference]: Finished difference. Result has 699 places, 2087 transitions, 80552 flow [2023-01-28 03:16:33,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=77216, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=80552, PETRI_PLACES=699, PETRI_TRANSITIONS=2087} [2023-01-28 03:16:33,132 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 679 predicate places. [2023-01-28 03:16:33,132 INFO L495 AbstractCegarLoop]: Abstraction has has 699 places, 2087 transitions, 80552 flow [2023-01-28 03:16:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 168.93333333333334) internal successors, (2534), 15 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:33,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:16:33,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:16:33,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-01-28 03:16:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:16:33,334 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:16:33,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:16:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash -458574299, now seen corresponding path program 64 times [2023-01-28 03:16:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:16:33,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105454842] [2023-01-28 03:16:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:16:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:16:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:16:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:16:33,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:16:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105454842] [2023-01-28 03:16:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105454842] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:16:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615796197] [2023-01-28 03:16:33,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:16:33,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:16:33,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:16:33,395 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:16:33,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-01-28 03:16:33,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:16:33,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:16:33,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:16:33,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:16:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:16:33,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:16:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:16:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615796197] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:16:33,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:16:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-01-28 03:16:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623834029] [2023-01-28 03:16:33,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:16:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:16:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:16:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:16:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:16:33,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:16:33,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 2087 transitions, 80552 flow. Second operand has 16 states, 16 states have (on average 168.75) internal successors, (2700), 16 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:33,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:16:33,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:16:33,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:16:43,808 INFO L130 PetriNetUnfolder]: 5736/11503 cut-off events. [2023-01-28 03:16:43,809 INFO L131 PetriNetUnfolder]: For 1065756/1065756 co-relation queries the response was YES. [2023-01-28 03:16:43,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179587 conditions, 11503 events. 5736/11503 cut-off events. For 1065756/1065756 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 105621 event pairs, 828 based on Foata normal form. 4/11507 useless extension candidates. Maximal degree in co-relation 179350. Up to 3646 conditions per place. [2023-01-28 03:16:44,001 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1267 selfloop transitions, 893 changer transitions 4/2164 dead transitions. [2023-01-28 03:16:44,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 2164 transitions, 86025 flow [2023-01-28 03:16:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 03:16:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 03:16:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4462 transitions. [2023-01-28 03:16:44,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165421956684093 [2023-01-28 03:16:44,003 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4462 transitions. [2023-01-28 03:16:44,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4462 transitions. [2023-01-28 03:16:44,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:16:44,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4462 transitions. [2023-01-28 03:16:44,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 171.6153846153846) internal successors, (4462), 26 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:44,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 412.0) internal successors, (11124), 27 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:44,010 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 412.0) internal successors, (11124), 27 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:16:44,010 INFO L175 Difference]: Start difference. First operand has 699 places, 2087 transitions, 80552 flow. Second operand 26 states and 4462 transitions. [2023-01-28 03:16:44,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 2164 transitions, 86025 flow [2023-01-28 03:17:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 2164 transitions, 85344 flow, removed 287 selfloop flow, removed 10 redundant places. [2023-01-28 03:17:07,063 INFO L231 Difference]: Finished difference. Result has 717 places, 2087 transitions, 81886 flow [2023-01-28 03:17:07,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=79851, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=890, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=81886, PETRI_PLACES=717, PETRI_TRANSITIONS=2087} [2023-01-28 03:17:07,065 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 697 predicate places. [2023-01-28 03:17:07,065 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 2087 transitions, 81886 flow [2023-01-28 03:17:07,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 168.75) internal successors, (2700), 16 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:07,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:17:07,065 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:17:07,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-01-28 03:17:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:17:07,271 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:17:07,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:17:07,271 INFO L85 PathProgramCache]: Analyzing trace with hash 546172837, now seen corresponding path program 65 times [2023-01-28 03:17:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:17:07,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708291335] [2023-01-28 03:17:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:17:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:17:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:17:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:17:07,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:17:07,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708291335] [2023-01-28 03:17:07,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708291335] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:17:07,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437119722] [2023-01-28 03:17:07,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:17:07,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:17:07,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:17:07,337 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:17:07,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-01-28 03:17:07,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:17:07,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:17:07,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:17:07,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:17:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:17:07,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:17:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:17:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437119722] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:17:07,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:17:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-01-28 03:17:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026187930] [2023-01-28 03:17:07,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:17:07,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:17:07,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:17:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:17:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:17:07,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:17:07,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 2087 transitions, 81886 flow. Second operand has 17 states, 17 states have (on average 168.76470588235293) internal successors, (2869), 17 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:07,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:17:07,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:17:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:17:18,828 INFO L130 PetriNetUnfolder]: 6210/12485 cut-off events. [2023-01-28 03:17:18,829 INFO L131 PetriNetUnfolder]: For 1273021/1273021 co-relation queries the response was YES. [2023-01-28 03:17:18,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199106 conditions, 12485 events. 6210/12485 cut-off events. For 1273021/1273021 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 116022 event pairs, 971 based on Foata normal form. 28/12513 useless extension candidates. Maximal degree in co-relation 198866. Up to 3941 conditions per place. [2023-01-28 03:17:19,047 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1474 selfloop transitions, 894 changer transitions 6/2374 dead transitions. [2023-01-28 03:17:19,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 2374 transitions, 95973 flow [2023-01-28 03:17:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 03:17:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 03:17:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4469 transitions. [2023-01-28 03:17:19,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41719566840926064 [2023-01-28 03:17:19,050 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4469 transitions. [2023-01-28 03:17:19,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4469 transitions. [2023-01-28 03:17:19,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:17:19,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4469 transitions. [2023-01-28 03:17:19,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 171.8846153846154) internal successors, (4469), 26 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:19,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 412.0) internal successors, (11124), 27 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:19,057 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 412.0) internal successors, (11124), 27 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:19,057 INFO L175 Difference]: Start difference. First operand has 717 places, 2087 transitions, 81886 flow. Second operand 26 states and 4469 transitions. [2023-01-28 03:17:19,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 2374 transitions, 95973 flow [2023-01-28 03:17:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 2374 transitions, 94145 flow, removed 146 selfloop flow, removed 14 redundant places. [2023-01-28 03:17:45,144 INFO L231 Difference]: Finished difference. Result has 737 places, 2251 transitions, 90446 flow [2023-01-28 03:17:45,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=79884, PETRI_DIFFERENCE_MINUEND_PLACES=702, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=90446, PETRI_PLACES=737, PETRI_TRANSITIONS=2251} [2023-01-28 03:17:45,146 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 717 predicate places. [2023-01-28 03:17:45,146 INFO L495 AbstractCegarLoop]: Abstraction has has 737 places, 2251 transitions, 90446 flow [2023-01-28 03:17:45,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.76470588235293) internal successors, (2869), 17 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:45,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:17:45,147 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:17:45,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-01-28 03:17:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:17:45,353 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:17:45,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:17:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1998320291, now seen corresponding path program 66 times [2023-01-28 03:17:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:17:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871602054] [2023-01-28 03:17:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:17:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:17:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:17:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:17:45,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:17:45,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871602054] [2023-01-28 03:17:45,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871602054] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:17:45,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837417696] [2023-01-28 03:17:45,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:17:45,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:17:45,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:17:45,441 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:17:45,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-01-28 03:17:45,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 03:17:45,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:17:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:17:45,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:17:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:17:45,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:17:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:17:45,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837417696] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:17:45,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:17:45,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-01-28 03:17:45,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939334323] [2023-01-28 03:17:45,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:17:45,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:17:45,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:17:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:17:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:17:45,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:17:45,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 2251 transitions, 90446 flow. Second operand has 17 states, 17 states have (on average 168.88235294117646) internal successors, (2871), 17 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:45,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:17:45,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:17:45,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:17:59,199 INFO L130 PetriNetUnfolder]: 6506/13103 cut-off events. [2023-01-28 03:17:59,199 INFO L131 PetriNetUnfolder]: For 1484422/1484422 co-relation queries the response was YES. [2023-01-28 03:17:59,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215101 conditions, 13103 events. 6506/13103 cut-off events. For 1484422/1484422 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 122184 event pairs, 285 based on Foata normal form. 68/13171 useless extension candidates. Maximal degree in co-relation 214852. Up to 7101 conditions per place. [2023-01-28 03:17:59,426 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1738 selfloop transitions, 753 changer transitions 6/2497 dead transitions. [2023-01-28 03:17:59,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 2497 transitions, 105089 flow [2023-01-28 03:17:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 03:17:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 03:17:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5485 transitions. [2023-01-28 03:17:59,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160345873786408 [2023-01-28 03:17:59,429 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5485 transitions. [2023-01-28 03:17:59,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5485 transitions. [2023-01-28 03:17:59,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:17:59,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5485 transitions. [2023-01-28 03:17:59,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 171.40625) internal successors, (5485), 32 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:59,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 412.0) internal successors, (13596), 33 states have internal predecessors, (13596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:59,437 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 412.0) internal successors, (13596), 33 states have internal predecessors, (13596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:17:59,437 INFO L175 Difference]: Start difference. First operand has 737 places, 2251 transitions, 90446 flow. Second operand 32 states and 5485 transitions. [2023-01-28 03:17:59,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 2497 transitions, 105089 flow [2023-01-28 03:18:31,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 2497 transitions, 102502 flow, removed 958 selfloop flow, removed 15 redundant places. [2023-01-28 03:18:31,535 INFO L231 Difference]: Finished difference. Result has 764 places, 2391 transitions, 96982 flow [2023-01-28 03:18:31,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=88453, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=96982, PETRI_PLACES=764, PETRI_TRANSITIONS=2391} [2023-01-28 03:18:31,537 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 744 predicate places. [2023-01-28 03:18:31,537 INFO L495 AbstractCegarLoop]: Abstraction has has 764 places, 2391 transitions, 96982 flow [2023-01-28 03:18:31,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.88235294117646) internal successors, (2871), 17 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:31,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:31,538 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:31,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-01-28 03:18:31,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-01-28 03:18:31,739 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:18:31,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash 414514617, now seen corresponding path program 67 times [2023-01-28 03:18:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:31,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673670412] [2023-01-28 03:18:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673670412] [2023-01-28 03:18:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673670412] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548855448] [2023-01-28 03:18:31,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:18:31,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:31,803 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:18:31,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-01-28 03:18:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:31,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:18:31,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:31,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548855448] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:18:32,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:18:32,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-01-28 03:18:32,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325785655] [2023-01-28 03:18:32,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:18:32,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:18:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:18:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:18:32,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:18:32,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 2391 transitions, 96982 flow. Second operand has 17 states, 17 states have (on average 168.7058823529412) internal successors, (2868), 17 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:32,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:32,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:18:32,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:45,869 INFO L130 PetriNetUnfolder]: 7052/14173 cut-off events. [2023-01-28 03:18:45,870 INFO L131 PetriNetUnfolder]: For 1702508/1702508 co-relation queries the response was YES. [2023-01-28 03:18:46,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239137 conditions, 14173 events. 7052/14173 cut-off events. For 1702508/1702508 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 134216 event pairs, 517 based on Foata normal form. 110/14283 useless extension candidates. Maximal degree in co-relation 238878. Up to 9352 conditions per place. [2023-01-28 03:18:46,867 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1879 selfloop transitions, 866 changer transitions 0/2745 dead transitions. [2023-01-28 03:18:46,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 2745 transitions, 116600 flow [2023-01-28 03:18:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 03:18:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 03:18:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3795 transitions. [2023-01-28 03:18:46,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186893203883495 [2023-01-28 03:18:46,871 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3795 transitions. [2023-01-28 03:18:46,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3795 transitions. [2023-01-28 03:18:46,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:46,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3795 transitions. [2023-01-28 03:18:46,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 172.5) internal successors, (3795), 22 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:46,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:46,879 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 412.0) internal successors, (9476), 23 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:46,879 INFO L175 Difference]: Start difference. First operand has 764 places, 2391 transitions, 96982 flow. Second operand 22 states and 3795 transitions. [2023-01-28 03:18:46,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 2745 transitions, 116600 flow [2023-01-28 03:19:24,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 768 places, 2745 transitions, 113324 flow, removed 1144 selfloop flow, removed 16 redundant places. [2023-01-28 03:19:24,080 INFO L231 Difference]: Finished difference. Result has 777 places, 2579 transitions, 105209 flow [2023-01-28 03:19:24,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=93622, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=666, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=105209, PETRI_PLACES=777, PETRI_TRANSITIONS=2579} [2023-01-28 03:19:24,082 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 757 predicate places. [2023-01-28 03:19:24,082 INFO L495 AbstractCegarLoop]: Abstraction has has 777 places, 2579 transitions, 105209 flow [2023-01-28 03:19:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.7058823529412) internal successors, (2868), 17 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:19:24,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:19:24,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:19:24,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-01-28 03:19:24,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:19:24,289 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:19:24,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:19:24,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1977314083, now seen corresponding path program 68 times [2023-01-28 03:19:24,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:19:24,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541140233] [2023-01-28 03:19:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:19:24,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:19:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:19:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:19:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:19:24,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541140233] [2023-01-28 03:19:24,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541140233] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:19:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398050715] [2023-01-28 03:19:24,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:19:24,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:19:24,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:19:24,363 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:19:24,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-01-28 03:19:24,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:19:24,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:19:24,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:19:24,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:19:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:19:24,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:19:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:19:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398050715] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:19:24,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:19:24,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-01-28 03:19:24,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379580292] [2023-01-28 03:19:24,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:19:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:19:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:19:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:19:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:19:24,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:19:24,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 2579 transitions, 105209 flow. Second operand has 16 states, 16 states have (on average 168.9375) internal successors, (2703), 16 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:19:24,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:19:24,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:19:24,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:19:39,988 INFO L130 PetriNetUnfolder]: 6955/14036 cut-off events. [2023-01-28 03:19:39,988 INFO L131 PetriNetUnfolder]: For 1617603/1617603 co-relation queries the response was YES. [2023-01-28 03:19:40,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235552 conditions, 14036 events. 6955/14036 cut-off events. For 1617603/1617603 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 132966 event pairs, 269 based on Foata normal form. 92/14128 useless extension candidates. Maximal degree in co-relation 235286. Up to 6204 conditions per place. [2023-01-28 03:19:40,252 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1660 selfloop transitions, 1072 changer transitions 8/2740 dead transitions. [2023-01-28 03:19:40,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 2740 transitions, 116339 flow [2023-01-28 03:19:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-28 03:19:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-28 03:19:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5314 transitions. [2023-01-28 03:19:40,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160663952395866 [2023-01-28 03:19:40,255 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5314 transitions. [2023-01-28 03:19:40,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5314 transitions. [2023-01-28 03:19:40,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:19:40,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5314 transitions. [2023-01-28 03:19:40,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 171.41935483870967) internal successors, (5314), 31 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:19:40,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 412.0) internal successors, (13184), 32 states have internal predecessors, (13184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:19:40,267 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 412.0) internal successors, (13184), 32 states have internal predecessors, (13184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:19:40,267 INFO L175 Difference]: Start difference. First operand has 777 places, 2579 transitions, 105209 flow. Second operand 31 states and 5314 transitions. [2023-01-28 03:19:40,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 2740 transitions, 116339 flow [2023-01-28 03:20:18,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 2740 transitions, 113467 flow, removed 996 selfloop flow, removed 10 redundant places. [2023-01-28 03:20:18,228 INFO L231 Difference]: Finished difference. Result has 801 places, 2615 transitions, 107085 flow [2023-01-28 03:20:18,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=101248, PETRI_DIFFERENCE_MINUEND_PLACES=767, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=107085, PETRI_PLACES=801, PETRI_TRANSITIONS=2615} [2023-01-28 03:20:18,230 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 781 predicate places. [2023-01-28 03:20:18,230 INFO L495 AbstractCegarLoop]: Abstraction has has 801 places, 2615 transitions, 107085 flow [2023-01-28 03:20:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 168.9375) internal successors, (2703), 16 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:20:18,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:20:18,231 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:20:18,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-01-28 03:20:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:20:18,437 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:20:18,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:20:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash -21418435, now seen corresponding path program 69 times [2023-01-28 03:20:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:20:18,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704438599] [2023-01-28 03:20:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:20:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:20:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:20:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:20:18,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:20:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704438599] [2023-01-28 03:20:18,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704438599] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:20:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602939113] [2023-01-28 03:20:18,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:20:18,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:20:18,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:20:18,501 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:20:18,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-01-28 03:20:18,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:20:18,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:20:18,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:20:18,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:20:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:20:18,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:20:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:20:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602939113] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:20:18,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:20:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-01-28 03:20:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807143975] [2023-01-28 03:20:18,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:20:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:20:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:20:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:20:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:20:18,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:20:18,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 2615 transitions, 107085 flow. Second operand has 17 states, 17 states have (on average 168.8235294117647) internal successors, (2870), 17 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:20:18,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:20:18,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:20:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:20:34,630 INFO L130 PetriNetUnfolder]: 6961/14034 cut-off events. [2023-01-28 03:20:34,630 INFO L131 PetriNetUnfolder]: For 1555819/1555819 co-relation queries the response was YES. [2023-01-28 03:20:34,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237742 conditions, 14034 events. 6961/14034 cut-off events. For 1555819/1555819 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 132831 event pairs, 281 based on Foata normal form. 28/14062 useless extension candidates. Maximal degree in co-relation 237476. Up to 6341 conditions per place. [2023-01-28 03:20:34,890 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1678 selfloop transitions, 1097 changer transitions 6/2781 dead transitions. [2023-01-28 03:20:34,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 833 places, 2781 transitions, 118427 flow [2023-01-28 03:20:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-28 03:20:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-28 03:20:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5828 transitions. [2023-01-28 03:20:34,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160479725870931 [2023-01-28 03:20:34,894 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5828 transitions. [2023-01-28 03:20:34,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5828 transitions. [2023-01-28 03:20:34,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:20:34,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5828 transitions. [2023-01-28 03:20:34,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 171.41176470588235) internal successors, (5828), 34 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:20:34,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 412.0) internal successors, (14420), 35 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:20:34,902 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 412.0) internal successors, (14420), 35 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:20:34,902 INFO L175 Difference]: Start difference. First operand has 801 places, 2615 transitions, 107085 flow. Second operand 34 states and 5828 transitions. [2023-01-28 03:20:34,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 833 places, 2781 transitions, 118427 flow [2023-01-28 03:21:12,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 2781 transitions, 116318 flow, removed 922 selfloop flow, removed 17 redundant places. [2023-01-28 03:21:12,350 INFO L231 Difference]: Finished difference. Result has 826 places, 2655 transitions, 111299 flow [2023-01-28 03:21:12,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=105284, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=111299, PETRI_PLACES=826, PETRI_TRANSITIONS=2655} [2023-01-28 03:21:12,352 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 806 predicate places. [2023-01-28 03:21:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 826 places, 2655 transitions, 111299 flow [2023-01-28 03:21:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.8235294117647) internal successors, (2870), 17 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:21:12,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:21:12,353 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:21:12,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-01-28 03:21:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-01-28 03:21:12,558 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:21:12,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:21:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1244867451, now seen corresponding path program 70 times [2023-01-28 03:21:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:21:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677596418] [2023-01-28 03:21:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:21:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:21:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:21:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:21:12,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:21:12,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677596418] [2023-01-28 03:21:12,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677596418] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:21:12,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162453684] [2023-01-28 03:21:12,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:21:12,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:21:12,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:21:12,623 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:21:12,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-01-28 03:21:12,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:21:12,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:21:12,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:21:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:21:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:21:12,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:21:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:21:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162453684] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:21:12,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:21:12,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-01-28 03:21:12,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851762523] [2023-01-28 03:21:12,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:21:12,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:21:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:21:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:21:12,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:21:12,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:21:12,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 2655 transitions, 111299 flow. Second operand has 17 states, 17 states have (on average 168.94117647058823) internal successors, (2872), 17 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:21:12,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:21:12,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:21:12,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:21:28,966 INFO L130 PetriNetUnfolder]: 7009/14176 cut-off events. [2023-01-28 03:21:28,967 INFO L131 PetriNetUnfolder]: For 1569885/1569885 co-relation queries the response was YES. [2023-01-28 03:21:29,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240940 conditions, 14176 events. 7009/14176 cut-off events. For 1569885/1569885 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 135145 event pairs, 2289 based on Foata normal form. 64/14240 useless extension candidates. Maximal degree in co-relation 240666. Up to 11093 conditions per place. [2023-01-28 03:21:29,238 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 2339 selfloop transitions, 459 changer transitions 0/2798 dead transitions. [2023-01-28 03:21:29,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 2798 transitions, 121645 flow [2023-01-28 03:21:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 03:21:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 03:21:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3456 transitions. [2023-01-28 03:21:29,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41941747572815535 [2023-01-28 03:21:29,240 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3456 transitions. [2023-01-28 03:21:29,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3456 transitions. [2023-01-28 03:21:29,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:21:29,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3456 transitions. [2023-01-28 03:21:29,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 172.8) internal successors, (3456), 20 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:21:29,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 412.0) internal successors, (8652), 21 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:21:29,245 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 412.0) internal successors, (8652), 21 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:21:29,245 INFO L175 Difference]: Start difference. First operand has 826 places, 2655 transitions, 111299 flow. Second operand 20 states and 3456 transitions. [2023-01-28 03:21:29,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 844 places, 2798 transitions, 121645 flow [2023-01-28 03:22:07,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 2798 transitions, 120350 flow, removed 436 selfloop flow, removed 19 redundant places. [2023-01-28 03:22:07,253 INFO L231 Difference]: Finished difference. Result has 829 places, 2676 transitions, 112655 flow [2023-01-28 03:22:07,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=109616, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=426, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=112655, PETRI_PLACES=829, PETRI_TRANSITIONS=2676} [2023-01-28 03:22:07,255 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 809 predicate places. [2023-01-28 03:22:07,255 INFO L495 AbstractCegarLoop]: Abstraction has has 829 places, 2676 transitions, 112655 flow [2023-01-28 03:22:07,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.94117647058823) internal successors, (2872), 17 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:22:07,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:22:07,255 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:22:07,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-01-28 03:22:07,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:22:07,456 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:22:07,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:22:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1560994467, now seen corresponding path program 71 times [2023-01-28 03:22:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:22:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898456979] [2023-01-28 03:22:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:22:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:22:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:22:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:22:07,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:22:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898456979] [2023-01-28 03:22:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898456979] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:22:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157880164] [2023-01-28 03:22:07,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:22:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:22:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:22:07,522 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:22:07,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-01-28 03:22:07,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:22:07,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:22:07,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:22:07,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:22:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:22:07,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:22:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:22:07,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157880164] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:22:07,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:22:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-01-28 03:22:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948064118] [2023-01-28 03:22:07,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:22:07,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:22:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:22:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:22:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:22:07,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:22:07,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 2676 transitions, 112655 flow. Second operand has 17 states, 17 states have (on average 168.88235294117646) internal successors, (2871), 17 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:22:07,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:22:07,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:22:07,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:22:27,361 INFO L130 PetriNetUnfolder]: 7967/16156 cut-off events. [2023-01-28 03:22:27,361 INFO L131 PetriNetUnfolder]: For 1898636/1898636 co-relation queries the response was YES. [2023-01-28 03:22:27,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278656 conditions, 16156 events. 7967/16156 cut-off events. For 1898636/1898636 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 157258 event pairs, 239 based on Foata normal form. 48/16204 useless extension candidates. Maximal degree in co-relation 278382. Up to 5941 conditions per place. [2023-01-28 03:22:27,708 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1793 selfloop transitions, 1383 changer transitions 3/3179 dead transitions. [2023-01-28 03:22:27,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 3179 transitions, 139852 flow [2023-01-28 03:22:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 03:22:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 03:22:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 6193 transitions. [2023-01-28 03:22:27,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41754314994606256 [2023-01-28 03:22:27,712 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 6193 transitions. [2023-01-28 03:22:27,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 6193 transitions. [2023-01-28 03:22:27,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:22:27,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 6193 transitions. [2023-01-28 03:22:27,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 172.02777777777777) internal successors, (6193), 36 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:22:27,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 412.0) internal successors, (15244), 37 states have internal predecessors, (15244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:22:27,721 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 412.0) internal successors, (15244), 37 states have internal predecessors, (15244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:22:27,721 INFO L175 Difference]: Start difference. First operand has 829 places, 2676 transitions, 112655 flow. Second operand 36 states and 6193 transitions. [2023-01-28 03:22:27,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 3179 transitions, 139852 flow [2023-01-28 03:23:14,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 855 places, 3179 transitions, 138546 flow, removed 359 selfloop flow, removed 9 redundant places. [2023-01-28 03:23:14,986 INFO L231 Difference]: Finished difference. Result has 864 places, 2968 transitions, 130690 flow [2023-01-28 03:23:14,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=111497, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=130690, PETRI_PLACES=864, PETRI_TRANSITIONS=2968} [2023-01-28 03:23:14,988 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 844 predicate places. [2023-01-28 03:23:14,988 INFO L495 AbstractCegarLoop]: Abstraction has has 864 places, 2968 transitions, 130690 flow [2023-01-28 03:23:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 168.88235294117646) internal successors, (2871), 17 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:23:14,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:23:14,988 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:23:14,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-01-28 03:23:15,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:23:15,189 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:23:15,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:23:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash -42424643, now seen corresponding path program 72 times [2023-01-28 03:23:15,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:23:15,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090931057] [2023-01-28 03:23:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:23:15,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:23:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:23:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:23:15,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:23:15,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090931057] [2023-01-28 03:23:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090931057] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:23:15,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946609850] [2023-01-28 03:23:15,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:23:15,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:23:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:23:15,259 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:23:15,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-01-28 03:23:15,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:23:15,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:23:15,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:23:15,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:23:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:23:15,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:23:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:23:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946609850] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:23:15,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:23:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-01-28 03:23:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536119001] [2023-01-28 03:23:15,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:23:15,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:23:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:23:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:23:15,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:23:15,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 412 [2023-01-28 03:23:15,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 864 places, 2968 transitions, 130690 flow. Second operand has 18 states, 18 states have (on average 168.77777777777777) internal successors, (3038), 18 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:23:15,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:23:15,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 412 [2023-01-28 03:23:15,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:23:38,485 INFO L130 PetriNetUnfolder]: 8219/16682 cut-off events. [2023-01-28 03:23:38,485 INFO L131 PetriNetUnfolder]: For 2105296/2105296 co-relation queries the response was YES. [2023-01-28 03:23:38,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297067 conditions, 16682 events. 8219/16682 cut-off events. For 2105296/2105296 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 163395 event pairs, 245 based on Foata normal form. 36/16718 useless extension candidates. Maximal degree in co-relation 296784. Up to 6338 conditions per place. [2023-01-28 03:23:38,932 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 1753 selfloop transitions, 1497 changer transitions 5/3255 dead transitions. [2023-01-28 03:23:38,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 3255 transitions, 148349 flow [2023-01-28 03:23:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 03:23:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 03:23:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6028 transitions. [2023-01-28 03:23:38,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41803051317614426 [2023-01-28 03:23:38,935 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 6028 transitions. [2023-01-28 03:23:38,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 6028 transitions. [2023-01-28 03:23:38,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:23:38,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 6028 transitions. [2023-01-28 03:23:38,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 172.22857142857143) internal successors, (6028), 35 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:23:38,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 412.0) internal successors, (14832), 36 states have internal predecessors, (14832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:23:38,945 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 412.0) internal successors, (14832), 36 states have internal predecessors, (14832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:23:38,945 INFO L175 Difference]: Start difference. First operand has 864 places, 2968 transitions, 130690 flow. Second operand 35 states and 6028 transitions. [2023-01-28 03:23:38,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 3255 transitions, 148349 flow Received shutdown request... [2023-01-28 03:24:06,009 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 03:24:06,013 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:24:06,013 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 03:24:06,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-01-28 03:24:06,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:24:06,210 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 03:24:06,211 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 03:24:06,211 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 03:24:06,212 INFO L445 BasicCegarLoop]: Path program histogram: [72, 5, 4, 2] [2023-01-28 03:24:06,214 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:24:06,214 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:24:06,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:24:06 BasicIcfg [2023-01-28 03:24:06,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:24:06,216 INFO L158 Benchmark]: Toolchain (without parser) took 818419.18ms. Allocated memory was 335.5MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 279.5MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-01-28 03:24:06,216 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:24:06,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.83ms. Allocated memory is still 335.5MB. Free memory was 279.3MB in the beginning and 313.1MB in the end (delta: -33.7MB). Peak memory consumption was 15.6MB. Max. memory is 16.0GB. [2023-01-28 03:24:06,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.55ms. Allocated memory is still 335.5MB. Free memory was 312.5MB in the beginning and 311.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:24:06,216 INFO L158 Benchmark]: Boogie Preprocessor took 31.52ms. Allocated memory is still 335.5MB. Free memory was 311.0MB in the beginning and 309.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:24:06,216 INFO L158 Benchmark]: RCFGBuilder took 459.09ms. Allocated memory is still 335.5MB. Free memory was 309.3MB in the beginning and 291.6MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 03:24:06,216 INFO L158 Benchmark]: TraceAbstraction took 817639.22ms. Allocated memory was 335.5MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 291.0MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-01-28 03:24:06,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 252.83ms. Allocated memory is still 335.5MB. Free memory was 279.3MB in the beginning and 313.1MB in the end (delta: -33.7MB). Peak memory consumption was 15.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.55ms. Allocated memory is still 335.5MB. Free memory was 312.5MB in the beginning and 311.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 31.52ms. Allocated memory is still 335.5MB. Free memory was 311.0MB in the beginning and 309.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 459.09ms. Allocated memory is still 335.5MB. Free memory was 309.3MB in the beginning and 291.6MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 817639.22ms. Allocated memory was 335.5MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 291.0MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 179 PlacesBefore, 20 PlacesAfterwards, 186 TransitionsBefore, 15 TransitionsAfterwards, 7452 CoEnabledTransitionPairs, 8 FixpointIterations, 65 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 35 ConcurrentYvCompositions, 12 ChoiceCompositions, 216 TotalNumberOfCompositions, 6342 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6342, independent: 6342, independent conditional: 0, independent unconditional: 6342, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4246, independent: 4246, independent conditional: 0, independent unconditional: 4246, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6342, independent: 2096, independent conditional: 0, independent unconditional: 2096, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 4246, unknown conditional: 0, unknown unconditional: 4246] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 283 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: 817.5s, OverallIterations: 83, TraceHistogramMax: 3, PathProgramHistogramMax: 72, EmptinessCheckTime: 0.0s, AutomataDifference: 765.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6252 SdHoareTripleChecker+Valid, 12.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6252 mSDsluCounter, 705 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 460 mSDsCounter, 729 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26586 IncrementalHoareTripleChecker+Invalid, 27315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 729 mSolverCounterUnsat, 245 mSDtfsCounter, 26586 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4354 GetRequests, 2366 SyntacticMatches, 274 SemanticMatches, 1714 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11842 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130690occurred in iteration=82, InterpolantAutomatonStates: 1276, 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: 1.0s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 2668 NumberOfCodeBlocks, 2668 NumberOfCodeBlocksAsserted, 256 NumberOfCheckSat, 3729 ConstructedInterpolants, 0 QuantifiedInterpolants, 21643 SizeOfPredicates, 703 NumberOfNonLiveVariables, 19448 ConjunctsInSsa, 1824 ConjunctsInUnsatCore, 239 InterpolantComputations, 5 PerfectInterpolantSequences, 489/1353 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