/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:24:53,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:24:53,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:24:53,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:24:53,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:24:53,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:24:53,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:24:53,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:24:53,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:24:53,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:24:53,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:24:53,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:24:53,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:24:53,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:24:53,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:24:53,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:24:53,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:24:53,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:24:53,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:24:53,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:24:53,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:24:53,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:24:53,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:24:53,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:24:53,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 11:24:53,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 11:24:53,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 11:24:53,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 11:24:53,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 11:24:53,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 11:24:53,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 11:24:53,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 11:24:53,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 11:24:53,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 11:24:53,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 11:24:53,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 11:24:53,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 11:24:53,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 11:24:53,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:24:53,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:24:53,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:24:53,231 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 11:24:53,261 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:24:53,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:24:53,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:24:53,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:24:53,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:24:53,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:24:53,264 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:24:53,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:24:53,265 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:24:53,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:24:53,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:24:53,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:24:53,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:24:53,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:24:53,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:24:53,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:24:53,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:24:53,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:24:53,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:24:53,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:24:53,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:24:53,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:24:53,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:24:53,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:24:53,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:24:53,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:24:53,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:24:53,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:24:53,487 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:24:53,487 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:24:53,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-01-28 11:24:54,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:24:54,822 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:24:54,822 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-01-28 11:24:54,832 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243e33f1d/8822c526b95e4e92b828fa899a53d2ed/FLAGf3c7c9b6c [2023-01-28 11:24:54,843 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243e33f1d/8822c526b95e4e92b828fa899a53d2ed [2023-01-28 11:24:54,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:24:54,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:24:54,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:24:54,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:24:54,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:24:54,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:24:54" (1/1) ... [2023-01-28 11:24:54,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7d2eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:54, skipping insertion in model container [2023-01-28 11:24:54,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:24:54" (1/1) ... [2023-01-28 11:24:54,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:24:54,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:24:55,009 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/popl20-mult-equiv.wvr.c[2591,2604] [2023-01-28 11:24:55,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:24:55,021 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:24:55,041 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/popl20-mult-equiv.wvr.c[2591,2604] [2023-01-28 11:24:55,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:24:55,049 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:24:55,049 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:24:55,055 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:24:55,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55 WrapperNode [2023-01-28 11:24:55,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:24:55,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:24:55,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:24:55,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:24:55,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,105 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-01-28 11:24:55,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:24:55,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:24:55,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:24:55,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:24:55,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:24:55,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:24:55,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:24:55,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:24:55,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (1/1) ... [2023-01-28 11:24:55,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:24:55,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:24:55,155 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 11:24:55,160 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 11:24:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:24:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:24:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:24:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:24:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:24:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:24:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:24:55,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:24:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:24:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:24:55,186 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 11:24:55,256 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:24:55,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:24:55,417 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:24:55,474 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:24:55,474 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 11:24:55,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:24:55 BoogieIcfgContainer [2023-01-28 11:24:55,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:24:55,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:24:55,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:24:55,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:24:55,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:24:54" (1/3) ... [2023-01-28 11:24:55,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4d1f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:24:55, skipping insertion in model container [2023-01-28 11:24:55,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:24:55" (2/3) ... [2023-01-28 11:24:55,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4d1f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:24:55, skipping insertion in model container [2023-01-28 11:24:55,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:24:55" (3/3) ... [2023-01-28 11:24:55,483 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-01-28 11:24:55,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:24:55,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:24:55,498 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:24:55,600 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 11:24:55,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 212 flow [2023-01-28 11:24:55,696 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2023-01-28 11:24:55,696 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:24:55,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 7/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-01-28 11:24:55,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 94 transitions, 212 flow [2023-01-28 11:24:55,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 81 transitions, 180 flow [2023-01-28 11:24:55,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:24:55,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 81 transitions, 180 flow [2023-01-28 11:24:55,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 81 transitions, 180 flow [2023-01-28 11:24:55,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 180 flow [2023-01-28 11:24:55,739 INFO L130 PetriNetUnfolder]: 7/81 cut-off events. [2023-01-28 11:24:55,740 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:24:55,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 7/81 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-01-28 11:24:55,742 INFO L119 LiptonReduction]: Number of co-enabled transitions 860 [2023-01-28 11:24:58,040 INFO L134 LiptonReduction]: Checked pairs total: 1280 [2023-01-28 11:24:58,040 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-01-28 11:24:58,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:24:58,056 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;@5d1bf2a6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:24:58,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 11:24:58,062 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2023-01-28 11:24:58,062 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:24:58,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:24:58,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:24:58,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:24:58,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:24:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1858201439, now seen corresponding path program 1 times [2023-01-28 11:24:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:24:58,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652017798] [2023-01-28 11:24:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:24:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:24:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:24:58,599 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 11:24:58,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:24:58,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652017798] [2023-01-28 11:24:58,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652017798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:24:58,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:24:58,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 11:24:58,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516362281] [2023-01-28 11:24:58,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:24:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:24:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:24:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:24:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:24:58,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 158 [2023-01-28 11:24:58,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:58,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:24:58,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 158 [2023-01-28 11:24:58,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:24:58,779 INFO L130 PetriNetUnfolder]: 271/426 cut-off events. [2023-01-28 11:24:58,780 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-01-28 11:24:58,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 426 events. 271/426 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1528 event pairs, 37 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 671. Up to 309 conditions per place. [2023-01-28 11:24:58,789 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2023-01-28 11:24:58,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2023-01-28 11:24:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:24:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:24:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-01-28 11:24:58,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632911392405063 [2023-01-28 11:24:58,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-01-28 11:24:58,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-01-28 11:24:58,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:24:58,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-01-28 11:24:58,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:58,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:58,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:58,824 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 267 transitions. [2023-01-28 11:24:58,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 181 flow [2023-01-28 11:24:58,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 11:24:58,829 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 78 flow [2023-01-28 11:24:58,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-01-28 11:24:58,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-28 11:24:58,837 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 78 flow [2023-01-28 11:24:58,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:58,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:24:58,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:24:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:24:58,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:24:58,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:24:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1511050058, now seen corresponding path program 1 times [2023-01-28 11:24:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:24:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884931817] [2023-01-28 11:24:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:24:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:24:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:24:59,159 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 11:24:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:24:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884931817] [2023-01-28 11:24:59,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884931817] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:24:59,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:24:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 11:24:59,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305917010] [2023-01-28 11:24:59,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:24:59,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:24:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:24:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:24:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 11:24:59,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-01-28 11:24:59,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:24:59,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-01-28 11:24:59,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:24:59,402 INFO L130 PetriNetUnfolder]: 459/707 cut-off events. [2023-01-28 11:24:59,402 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-01-28 11:24:59,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 707 events. 459/707 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2552 event pairs, 40 based on Foata normal form. 40/747 useless extension candidates. Maximal degree in co-relation 353. Up to 277 conditions per place. [2023-01-28 11:24:59,407 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 72 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-01-28 11:24:59,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 84 transitions, 395 flow [2023-01-28 11:24:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 11:24:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 11:24:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2023-01-28 11:24:59,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063291139240507 [2023-01-28 11:24:59,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2023-01-28 11:24:59,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2023-01-28 11:24:59,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:24:59,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2023-01-28 11:24:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,417 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 78 flow. Second operand 7 states and 560 transitions. [2023-01-28 11:24:59,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 84 transitions, 395 flow [2023-01-28 11:24:59,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 84 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:24:59,420 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 154 flow [2023-01-28 11:24:59,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-01-28 11:24:59,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-01-28 11:24:59,421 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 154 flow [2023-01-28 11:24:59,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:24:59,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:24:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 11:24:59,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:24:59,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:24:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2072907592, now seen corresponding path program 2 times [2023-01-28 11:24:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:24:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133565477] [2023-01-28 11:24:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:24:59,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:24:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:24:59,634 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 11:24:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:24:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133565477] [2023-01-28 11:24:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133565477] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:24:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:24:59,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 11:24:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115397377] [2023-01-28 11:24:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:24:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:24:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:24:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:24:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:24:59,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-01-28 11:24:59,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:24:59,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-01-28 11:24:59,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:24:59,950 INFO L130 PetriNetUnfolder]: 947/1447 cut-off events. [2023-01-28 11:24:59,951 INFO L131 PetriNetUnfolder]: For 821/821 co-relation queries the response was YES. [2023-01-28 11:24:59,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 1447 events. 947/1447 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6100 event pairs, 99 based on Foata normal form. 24/1471 useless extension candidates. Maximal degree in co-relation 2968. Up to 478 conditions per place. [2023-01-28 11:24:59,960 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 96 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2023-01-28 11:24:59,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 115 transitions, 646 flow [2023-01-28 11:24:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 11:24:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 11:24:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2023-01-28 11:24:59,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226039783001808 [2023-01-28 11:24:59,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2023-01-28 11:24:59,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2023-01-28 11:24:59,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:24:59,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2023-01-28 11:24:59,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,967 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,967 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 154 flow. Second operand 7 states and 578 transitions. [2023-01-28 11:24:59,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 115 transitions, 646 flow [2023-01-28 11:24:59,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 115 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 11:24:59,974 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 308 flow [2023-01-28 11:24:59,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-01-28 11:24:59,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2023-01-28 11:24:59,975 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 308 flow [2023-01-28 11:24:59,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:24:59,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:24:59,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:24:59,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 11:24:59,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:24:59,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:24:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2012888634, now seen corresponding path program 3 times [2023-01-28 11:24:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:24:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063356821] [2023-01-28 11:24:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:24:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:24:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:00,096 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 11:25:00,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063356821] [2023-01-28 11:25:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063356821] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215818988] [2023-01-28 11:25:00,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:25:00,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:00,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:00,101 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 11:25:00,118 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 11:25:00,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:25:00,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:25:00,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:25:00,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:00,357 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 11:25:00,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:00,498 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 11:25:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215818988] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:00,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:25:00,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-01-28 11:25:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781135688] [2023-01-28 11:25:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:25:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:25:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:25:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 11:25:00,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-01-28 11:25:00,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:00,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:00,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-01-28 11:25:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:00,801 INFO L130 PetriNetUnfolder]: 1079/1685 cut-off events. [2023-01-28 11:25:00,802 INFO L131 PetriNetUnfolder]: For 4174/4174 co-relation queries the response was YES. [2023-01-28 11:25:00,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 1685 events. 1079/1685 cut-off events. For 4174/4174 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7517 event pairs, 185 based on Foata normal form. 30/1715 useless extension candidates. Maximal degree in co-relation 4517. Up to 695 conditions per place. [2023-01-28 11:25:00,812 INFO L137 encePairwiseOnDemand]: 150/158 looper letters, 70 selfloop transitions, 30 changer transitions 0/100 dead transitions. [2023-01-28 11:25:00,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 745 flow [2023-01-28 11:25:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 11:25:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 11:25:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2023-01-28 11:25:00,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027124773960217 [2023-01-28 11:25:00,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2023-01-28 11:25:00,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2023-01-28 11:25:00,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:00,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2023-01-28 11:25:00,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:00,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:00,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:00,819 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 308 flow. Second operand 7 states and 556 transitions. [2023-01-28 11:25:00,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 745 flow [2023-01-28 11:25:00,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 741 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 11:25:00,832 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 530 flow [2023-01-28 11:25:00,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-01-28 11:25:00,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-01-28 11:25:00,834 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 530 flow [2023-01-28 11:25:00,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:00,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:00,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:00,845 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 11:25:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:01,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:01,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1229482461, now seen corresponding path program 1 times [2023-01-28 11:25:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030660047] [2023-01-28 11:25:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:01,220 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 11:25:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030660047] [2023-01-28 11:25:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030660047] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587960281] [2023-01-28 11:25:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:01,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:01,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:01,222 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 11:25:01,253 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 11:25:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:01,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 11:25:01,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:01,595 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 11:25:01,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:01,818 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 11:25:01,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587960281] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:01,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:25:01,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 6] total 11 [2023-01-28 11:25:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338684663] [2023-01-28 11:25:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:25:01,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 11:25:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 11:25:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 11:25:01,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 11:25:01,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:01,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:01,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 11:25:01,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:02,272 INFO L130 PetriNetUnfolder]: 1352/2108 cut-off events. [2023-01-28 11:25:02,272 INFO L131 PetriNetUnfolder]: For 8573/8573 co-relation queries the response was YES. [2023-01-28 11:25:02,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9334 conditions, 2108 events. 1352/2108 cut-off events. For 8573/8573 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9990 event pairs, 59 based on Foata normal form. 12/2120 useless extension candidates. Maximal degree in co-relation 7191. Up to 1155 conditions per place. [2023-01-28 11:25:02,288 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 108 selfloop transitions, 50 changer transitions 7/165 dead transitions. [2023-01-28 11:25:02,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 165 transitions, 1512 flow [2023-01-28 11:25:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 11:25:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 11:25:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 710 transitions. [2023-01-28 11:25:02,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49929676511954996 [2023-01-28 11:25:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 710 transitions. [2023-01-28 11:25:02,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 710 transitions. [2023-01-28 11:25:02,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:02,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 710 transitions. [2023-01-28 11:25:02,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.88888888888889) internal successors, (710), 9 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:02,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:02,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:02,295 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 530 flow. Second operand 9 states and 710 transitions. [2023-01-28 11:25:02,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 165 transitions, 1512 flow [2023-01-28 11:25:02,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 165 transitions, 1472 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-01-28 11:25:02,317 INFO L231 Difference]: Finished difference. Result has 72 places, 95 transitions, 1085 flow [2023-01-28 11:25:02,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1085, PETRI_PLACES=72, PETRI_TRANSITIONS=95} [2023-01-28 11:25:02,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-01-28 11:25:02,318 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 95 transitions, 1085 flow [2023-01-28 11:25:02,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:02,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:02,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:02,327 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 11:25:02,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:02,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:02,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1535702041, now seen corresponding path program 1 times [2023-01-28 11:25:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:02,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029948708] [2023-01-28 11:25:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:02,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:02,740 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 11:25:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:02,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029948708] [2023-01-28 11:25:02,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029948708] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:25:02,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:25:02,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 11:25:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655423238] [2023-01-28 11:25:02,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:25:02,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:25:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:25:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:25:02,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 158 [2023-01-28 11:25:02,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 95 transitions, 1085 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:02,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:02,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 158 [2023-01-28 11:25:02,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:03,169 INFO L130 PetriNetUnfolder]: 1750/2767 cut-off events. [2023-01-28 11:25:03,170 INFO L131 PetriNetUnfolder]: For 21102/21102 co-relation queries the response was YES. [2023-01-28 11:25:03,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14773 conditions, 2767 events. 1750/2767 cut-off events. For 21102/21102 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14158 event pairs, 330 based on Foata normal form. 36/2803 useless extension candidates. Maximal degree in co-relation 13563. Up to 1246 conditions per place. [2023-01-28 11:25:03,194 INFO L137 encePairwiseOnDemand]: 150/158 looper letters, 150 selfloop transitions, 70 changer transitions 10/230 dead transitions. [2023-01-28 11:25:03,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 230 transitions, 2913 flow [2023-01-28 11:25:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:25:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:25:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-01-28 11:25:03,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221518987341772 [2023-01-28 11:25:03,196 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-01-28 11:25:03,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-01-28 11:25:03,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:03,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-01-28 11:25:03,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:03,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:03,199 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:03,199 INFO L175 Difference]: Start difference. First operand has 72 places, 95 transitions, 1085 flow. Second operand 6 states and 495 transitions. [2023-01-28 11:25:03,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 230 transitions, 2913 flow [2023-01-28 11:25:03,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 230 transitions, 2830 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-01-28 11:25:03,237 INFO L231 Difference]: Finished difference. Result has 80 places, 152 transitions, 2083 flow [2023-01-28 11:25:03,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2083, PETRI_PLACES=80, PETRI_TRANSITIONS=152} [2023-01-28 11:25:03,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2023-01-28 11:25:03,238 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 152 transitions, 2083 flow [2023-01-28 11:25:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:03,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:03,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:03,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 11:25:03,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:03,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash 125532181, now seen corresponding path program 2 times [2023-01-28 11:25:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:03,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637868490] [2023-01-28 11:25:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:03,392 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 11:25:03,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637868490] [2023-01-28 11:25:03,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637868490] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86038726] [2023-01-28 11:25:03,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:25:03,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:03,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:03,397 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 11:25:03,400 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 11:25:03,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:25:03,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:25:03,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 11:25:03,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:03,583 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 11:25:03,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:03,797 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 11:25:03,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86038726] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:25:03,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:25:03,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-01-28 11:25:03,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118983172] [2023-01-28 11:25:03,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:25:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 11:25:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 11:25:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 11:25:03,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 158 [2023-01-28 11:25:03,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 152 transitions, 2083 flow. Second operand has 11 states, 11 states have (on average 70.45454545454545) internal successors, (775), 11 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:03,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:03,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 158 [2023-01-28 11:25:03,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:04,531 INFO L130 PetriNetUnfolder]: 2463/3841 cut-off events. [2023-01-28 11:25:04,532 INFO L131 PetriNetUnfolder]: For 32755/32755 co-relation queries the response was YES. [2023-01-28 11:25:04,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23705 conditions, 3841 events. 2463/3841 cut-off events. For 32755/32755 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20255 event pairs, 199 based on Foata normal form. 91/3932 useless extension candidates. Maximal degree in co-relation 20193. Up to 1970 conditions per place. [2023-01-28 11:25:04,577 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 230 selfloop transitions, 52 changer transitions 8/290 dead transitions. [2023-01-28 11:25:04,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 290 transitions, 4225 flow [2023-01-28 11:25:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 11:25:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 11:25:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2023-01-28 11:25:04,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49909584086799275 [2023-01-28 11:25:04,579 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2023-01-28 11:25:04,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2023-01-28 11:25:04,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:04,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2023-01-28 11:25:04,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:04,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:04,583 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:04,583 INFO L175 Difference]: Start difference. First operand has 80 places, 152 transitions, 2083 flow. Second operand 7 states and 552 transitions. [2023-01-28 11:25:04,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 290 transitions, 4225 flow [2023-01-28 11:25:04,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 290 transitions, 4105 flow, removed 60 selfloop flow, removed 0 redundant places. [2023-01-28 11:25:04,698 INFO L231 Difference]: Finished difference. Result has 89 places, 176 transitions, 2604 flow [2023-01-28 11:25:04,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2604, PETRI_PLACES=89, PETRI_TRANSITIONS=176} [2023-01-28 11:25:04,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-01-28 11:25:04,700 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 176 transitions, 2604 flow [2023-01-28 11:25:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.45454545454545) internal successors, (775), 11 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:04,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:04,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:04,715 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 11:25:04,915 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 11:25:04,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:04,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1951789929, now seen corresponding path program 2 times [2023-01-28 11:25:04,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504087354] [2023-01-28 11:25:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:04,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:05,118 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 11:25:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504087354] [2023-01-28 11:25:05,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504087354] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:25:05,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:25:05,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 11:25:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990585744] [2023-01-28 11:25:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:25:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:25:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:25:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:25:05,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 158 [2023-01-28 11:25:05,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 176 transitions, 2604 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:05,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:05,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 158 [2023-01-28 11:25:05,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:05,885 INFO L130 PetriNetUnfolder]: 2921/4690 cut-off events. [2023-01-28 11:25:05,886 INFO L131 PetriNetUnfolder]: For 49187/49187 co-relation queries the response was YES. [2023-01-28 11:25:05,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29534 conditions, 4690 events. 2921/4690 cut-off events. For 49187/49187 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26913 event pairs, 747 based on Foata normal form. 72/4762 useless extension candidates. Maximal degree in co-relation 26028. Up to 2341 conditions per place. [2023-01-28 11:25:05,922 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 150 selfloop transitions, 102 changer transitions 6/258 dead transitions. [2023-01-28 11:25:05,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 258 transitions, 4063 flow [2023-01-28 11:25:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:25:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:25:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2023-01-28 11:25:05,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265822784810127 [2023-01-28 11:25:05,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 416 transitions. [2023-01-28 11:25:05,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 416 transitions. [2023-01-28 11:25:05,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:05,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 416 transitions. [2023-01-28 11:25:05,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:05,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:05,928 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:05,928 INFO L175 Difference]: Start difference. First operand has 89 places, 176 transitions, 2604 flow. Second operand 5 states and 416 transitions. [2023-01-28 11:25:05,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 258 transitions, 4063 flow [2023-01-28 11:25:06,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 258 transitions, 3960 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-01-28 11:25:06,048 INFO L231 Difference]: Finished difference. Result has 94 places, 191 transitions, 3162 flow [2023-01-28 11:25:06,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3162, PETRI_PLACES=94, PETRI_TRANSITIONS=191} [2023-01-28 11:25:06,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-01-28 11:25:06,049 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 191 transitions, 3162 flow [2023-01-28 11:25:06,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:06,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:06,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:06,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 11:25:06,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:06,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1119355907, now seen corresponding path program 3 times [2023-01-28 11:25:06,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:06,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180354931] [2023-01-28 11:25:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:06,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:06,216 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 11:25:06,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180354931] [2023-01-28 11:25:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180354931] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059382448] [2023-01-28 11:25:06,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:25:06,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:06,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:06,218 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 11:25:06,242 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 11:25:06,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:25:06,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:25:06,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 11:25:06,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:06,406 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 11:25:06,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:06,639 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 11:25:06,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059382448] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:25:06,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:25:06,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-01-28 11:25:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263635492] [2023-01-28 11:25:06,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:25:06,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 11:25:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 11:25:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 11:25:06,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 158 [2023-01-28 11:25:06,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 191 transitions, 3162 flow. Second operand has 11 states, 11 states have (on average 68.45454545454545) internal successors, (753), 11 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:06,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:06,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 158 [2023-01-28 11:25:06,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:08,735 INFO L130 PetriNetUnfolder]: 4751/7627 cut-off events. [2023-01-28 11:25:08,736 INFO L131 PetriNetUnfolder]: For 89665/89665 co-relation queries the response was YES. [2023-01-28 11:25:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51300 conditions, 7627 events. 4751/7627 cut-off events. For 89665/89665 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 47565 event pairs, 316 based on Foata normal form. 167/7794 useless extension candidates. Maximal degree in co-relation 44325. Up to 2138 conditions per place. [2023-01-28 11:25:08,832 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 270 selfloop transitions, 229 changer transitions 89/588 dead transitions. [2023-01-28 11:25:08,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 588 transitions, 8960 flow [2023-01-28 11:25:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 11:25:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 11:25:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1589 transitions. [2023-01-28 11:25:08,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-01-28 11:25:08,837 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1589 transitions. [2023-01-28 11:25:08,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1589 transitions. [2023-01-28 11:25:08,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:08,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1589 transitions. [2023-01-28 11:25:08,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 75.66666666666667) internal successors, (1589), 21 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:08,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 158.0) internal successors, (3476), 22 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:08,847 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 158.0) internal successors, (3476), 22 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:08,847 INFO L175 Difference]: Start difference. First operand has 94 places, 191 transitions, 3162 flow. Second operand 21 states and 1589 transitions. [2023-01-28 11:25:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 588 transitions, 8960 flow [2023-01-28 11:25:09,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 588 transitions, 8673 flow, removed 66 selfloop flow, removed 2 redundant places. [2023-01-28 11:25:09,181 INFO L231 Difference]: Finished difference. Result has 126 places, 308 transitions, 5948 flow [2023-01-28 11:25:09,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5948, PETRI_PLACES=126, PETRI_TRANSITIONS=308} [2023-01-28 11:25:09,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2023-01-28 11:25:09,182 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 308 transitions, 5948 flow [2023-01-28 11:25:09,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.45454545454545) internal successors, (753), 11 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:09,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:09,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:09,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 11:25:09,387 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 11:25:09,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:09,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:09,388 INFO L85 PathProgramCache]: Analyzing trace with hash 693870644, now seen corresponding path program 1 times [2023-01-28 11:25:09,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:09,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576689151] [2023-01-28 11:25:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:09,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:09,683 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 11:25:09,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:09,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576689151] [2023-01-28 11:25:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576689151] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400311769] [2023-01-28 11:25:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:09,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:09,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:09,685 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 11:25:09,688 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 11:25:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 11:25:09,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:09,951 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 11:25:09,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:10,238 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 11:25:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400311769] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:25:10,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:25:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-01-28 11:25:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974364432] [2023-01-28 11:25:10,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:25:10,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 11:25:10,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 11:25:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-28 11:25:10,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 158 [2023-01-28 11:25:10,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 308 transitions, 5948 flow. Second operand has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:10,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:10,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 158 [2023-01-28 11:25:10,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:11,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 11:25:13,217 INFO L130 PetriNetUnfolder]: 5704/9262 cut-off events. [2023-01-28 11:25:13,217 INFO L131 PetriNetUnfolder]: For 153472/153472 co-relation queries the response was YES. [2023-01-28 11:25:13,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70154 conditions, 9262 events. 5704/9262 cut-off events. For 153472/153472 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60424 event pairs, 404 based on Foata normal form. 8/9270 useless extension candidates. Maximal degree in co-relation 65121. Up to 5358 conditions per place. [2023-01-28 11:25:13,315 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 376 selfloop transitions, 193 changer transitions 5/574 dead transitions. [2023-01-28 11:25:13,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 574 transitions, 11440 flow [2023-01-28 11:25:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 11:25:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 11:25:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 682 transitions. [2023-01-28 11:25:13,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47960618846694797 [2023-01-28 11:25:13,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 682 transitions. [2023-01-28 11:25:13,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 682 transitions. [2023-01-28 11:25:13,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:13,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 682 transitions. [2023-01-28 11:25:13,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:13,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:13,322 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:13,322 INFO L175 Difference]: Start difference. First operand has 126 places, 308 transitions, 5948 flow. Second operand 9 states and 682 transitions. [2023-01-28 11:25:13,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 574 transitions, 11440 flow [2023-01-28 11:25:13,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 574 transitions, 10527 flow, removed 398 selfloop flow, removed 12 redundant places. [2023-01-28 11:25:13,983 INFO L231 Difference]: Finished difference. Result has 122 places, 419 transitions, 8443 flow [2023-01-28 11:25:13,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=5409, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8443, PETRI_PLACES=122, PETRI_TRANSITIONS=419} [2023-01-28 11:25:13,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2023-01-28 11:25:13,984 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 419 transitions, 8443 flow [2023-01-28 11:25:13,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:13,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:13,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:13,990 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 11:25:14,188 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 11:25:14,189 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:14,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1627485648, now seen corresponding path program 2 times [2023-01-28 11:25:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:14,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719899676] [2023-01-28 11:25:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:14,480 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 11:25:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719899676] [2023-01-28 11:25:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719899676] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644927228] [2023-01-28 11:25:14,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:25:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:14,484 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 11:25:14,510 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 11:25:14,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:25:14,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:25:14,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 11:25:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:14,653 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 11:25:14,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:14,939 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 11:25:14,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644927228] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:25:14,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:25:14,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-01-28 11:25:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54125752] [2023-01-28 11:25:14,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:25:14,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 11:25:14,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 11:25:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-01-28 11:25:14,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 158 [2023-01-28 11:25:14,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 419 transitions, 8443 flow. Second operand has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:14,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:14,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 158 [2023-01-28 11:25:14,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:17,048 INFO L130 PetriNetUnfolder]: 6242/10094 cut-off events. [2023-01-28 11:25:17,048 INFO L131 PetriNetUnfolder]: For 164692/164692 co-relation queries the response was YES. [2023-01-28 11:25:17,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76186 conditions, 10094 events. 6242/10094 cut-off events. For 164692/164692 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 66614 event pairs, 604 based on Foata normal form. 8/10102 useless extension candidates. Maximal degree in co-relation 72345. Up to 7372 conditions per place. [2023-01-28 11:25:17,131 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 402 selfloop transitions, 196 changer transitions 6/604 dead transitions. [2023-01-28 11:25:17,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 604 transitions, 12526 flow [2023-01-28 11:25:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 11:25:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 11:25:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 803 transitions. [2023-01-28 11:25:17,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4620253164556962 [2023-01-28 11:25:17,134 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 803 transitions. [2023-01-28 11:25:17,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 803 transitions. [2023-01-28 11:25:17,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:17,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 803 transitions. [2023-01-28 11:25:17,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:17,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:17,139 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:17,139 INFO L175 Difference]: Start difference. First operand has 122 places, 419 transitions, 8443 flow. Second operand 11 states and 803 transitions. [2023-01-28 11:25:17,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 604 transitions, 12526 flow [2023-01-28 11:25:17,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 604 transitions, 11943 flow, removed 282 selfloop flow, removed 2 redundant places. [2023-01-28 11:25:17,916 INFO L231 Difference]: Finished difference. Result has 135 places, 501 transitions, 10290 flow [2023-01-28 11:25:17,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10290, PETRI_PLACES=135, PETRI_TRANSITIONS=501} [2023-01-28 11:25:17,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2023-01-28 11:25:17,917 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 501 transitions, 10290 flow [2023-01-28 11:25:17,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:17,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:17,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:17,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 11:25:18,117 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 11:25:18,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:18,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -994462518, now seen corresponding path program 1 times [2023-01-28 11:25:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:18,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77715863] [2023-01-28 11:25:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:18,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:18,367 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 11:25:18,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77715863] [2023-01-28 11:25:18,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77715863] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372310106] [2023-01-28 11:25:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:18,368 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 11:25:18,377 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 11:25:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:18,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 11:25:18,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:18,754 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 11:25:18,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:19,135 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 11:25:19,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372310106] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:25:19,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:25:19,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2023-01-28 11:25:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400602084] [2023-01-28 11:25:19,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:25:19,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 11:25:19,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 11:25:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-01-28 11:25:19,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 11:25:19,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 501 transitions, 10290 flow. Second operand has 21 states, 21 states have (on average 68.33333333333333) internal successors, (1435), 21 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:19,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:19,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 11:25:19,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:27,132 INFO L130 PetriNetUnfolder]: 12930/20430 cut-off events. [2023-01-28 11:25:27,133 INFO L131 PetriNetUnfolder]: For 409575/409575 co-relation queries the response was YES. [2023-01-28 11:25:27,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157300 conditions, 20430 events. 12930/20430 cut-off events. For 409575/409575 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 144735 event pairs, 186 based on Foata normal form. 1516/21946 useless extension candidates. Maximal degree in co-relation 157244. Up to 5213 conditions per place. [2023-01-28 11:25:27,297 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 681 selfloop transitions, 1648 changer transitions 0/2329 dead transitions. [2023-01-28 11:25:27,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 2329 transitions, 41837 flow [2023-01-28 11:25:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-01-28 11:25:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-01-28 11:25:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 6659 transitions. [2023-01-28 11:25:27,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844318347155536 [2023-01-28 11:25:27,309 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 6659 transitions. [2023-01-28 11:25:27,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 6659 transitions. [2023-01-28 11:25:27,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:27,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 6659 transitions. [2023-01-28 11:25:27,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 76.54022988505747) internal successors, (6659), 87 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:27,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 158.0) internal successors, (13904), 88 states have internal predecessors, (13904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:27,340 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 158.0) internal successors, (13904), 88 states have internal predecessors, (13904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:27,340 INFO L175 Difference]: Start difference. First operand has 135 places, 501 transitions, 10290 flow. Second operand 87 states and 6659 transitions. [2023-01-28 11:25:27,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 2329 transitions, 41837 flow [2023-01-28 11:25:29,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 2329 transitions, 40668 flow, removed 574 selfloop flow, removed 6 redundant places. [2023-01-28 11:25:29,161 INFO L231 Difference]: Finished difference. Result has 253 places, 1781 transitions, 39288 flow [2023-01-28 11:25:29,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=8141, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=39288, PETRI_PLACES=253, PETRI_TRANSITIONS=1781} [2023-01-28 11:25:29,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2023-01-28 11:25:29,162 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 1781 transitions, 39288 flow [2023-01-28 11:25:29,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 68.33333333333333) internal successors, (1435), 21 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:29,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:25:29,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:25:29,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 11:25:29,368 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 11:25:29,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:25:29,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:25:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1240215054, now seen corresponding path program 2 times [2023-01-28 11:25:29,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:25:29,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020330853] [2023-01-28 11:25:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:25:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:25:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:25:29,567 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 11:25:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:25:29,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020330853] [2023-01-28 11:25:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020330853] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:25:29,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092525376] [2023-01-28 11:25:29,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:25:29,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:25:29,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:25:29,569 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 11:25:29,596 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 11:25:29,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:25:29,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:25:29,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 11:25:29,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:25:29,956 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 11:25:29,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:25:30,334 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 11:25:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092525376] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:25:30,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:25:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-01-28 11:25:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294502343] [2023-01-28 11:25:30,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:25:30,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 11:25:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:25:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 11:25:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-01-28 11:25:30,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 11:25:30,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 1781 transitions, 39288 flow. Second operand has 20 states, 20 states have (on average 68.45) internal successors, (1369), 20 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:30,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:25:30,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 11:25:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:25:48,690 INFO L130 PetriNetUnfolder]: 23279/37437 cut-off events. [2023-01-28 11:25:48,690 INFO L131 PetriNetUnfolder]: For 1101888/1101888 co-relation queries the response was YES. [2023-01-28 11:25:48,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350006 conditions, 37437 events. 23279/37437 cut-off events. For 1101888/1101888 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 296933 event pairs, 417 based on Foata normal form. 936/38373 useless extension candidates. Maximal degree in co-relation 349910. Up to 9517 conditions per place. [2023-01-28 11:25:49,104 INFO L137 encePairwiseOnDemand]: 146/158 looper letters, 1623 selfloop transitions, 2895 changer transitions 0/4518 dead transitions. [2023-01-28 11:25:49,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 4518 transitions, 103062 flow [2023-01-28 11:25:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-01-28 11:25:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-01-28 11:25:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 5363 transitions. [2023-01-28 11:25:49,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849005424954792 [2023-01-28 11:25:49,113 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 5363 transitions. [2023-01-28 11:25:49,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 5363 transitions. [2023-01-28 11:25:49,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:25:49,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 5363 transitions. [2023-01-28 11:25:49,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 76.61428571428571) internal successors, (5363), 70 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:49,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 158.0) internal successors, (11218), 71 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:49,133 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 158.0) internal successors, (11218), 71 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:25:49,133 INFO L175 Difference]: Start difference. First operand has 253 places, 1781 transitions, 39288 flow. Second operand 70 states and 5363 transitions. [2023-01-28 11:25:49,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 4518 transitions, 103062 flow [2023-01-28 11:26:16,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 4518 transitions, 90703 flow, removed 5786 selfloop flow, removed 7 redundant places. [2023-01-28 11:26:16,172 INFO L231 Difference]: Finished difference. Result has 359 places, 3832 transitions, 84741 flow [2023-01-28 11:26:16,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=33061, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=84741, PETRI_PLACES=359, PETRI_TRANSITIONS=3832} [2023-01-28 11:26:16,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2023-01-28 11:26:16,175 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 3832 transitions, 84741 flow [2023-01-28 11:26:16,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 68.45) internal successors, (1369), 20 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:26:16,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:26:16,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:26:16,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 11:26:16,383 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 11:26:16,383 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:26:16,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:26:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash 913127508, now seen corresponding path program 3 times [2023-01-28 11:26:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:26:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383434789] [2023-01-28 11:26:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:26:16,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:26:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:26:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:26:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:26:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383434789] [2023-01-28 11:26:16,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383434789] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:26:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074345991] [2023-01-28 11:26:16,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:26:16,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:26:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:26:16,549 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 11:26:16,553 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 11:26:16,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:26:16,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:26:16,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 11:26:16,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:26:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:26:16,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:26:16,964 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 11:26:16,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074345991] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:26:16,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:26:16,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-01-28 11:26:16,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361735020] [2023-01-28 11:26:16,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:26:16,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 11:26:16,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:26:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 11:26:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-01-28 11:26:16,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 11:26:16,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 3832 transitions, 84741 flow. Second operand has 17 states, 17 states have (on average 68.3529411764706) internal successors, (1162), 17 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:26:16,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:26:16,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 11:26:16,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:27:09,994 INFO L130 PetriNetUnfolder]: 37843/62479 cut-off events. [2023-01-28 11:27:09,995 INFO L131 PetriNetUnfolder]: For 2244488/2244488 co-relation queries the response was YES. [2023-01-28 11:27:11,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601162 conditions, 62479 events. 37843/62479 cut-off events. For 2244488/2244488 co-relation queries the response was YES. Maximal size of possible extension queue 3428. Compared 553153 event pairs, 528 based on Foata normal form. 1046/63525 useless extension candidates. Maximal degree in co-relation 601027. Up to 12149 conditions per place. [2023-01-28 11:27:11,310 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 1534 selfloop transitions, 6374 changer transitions 0/7908 dead transitions. [2023-01-28 11:27:11,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 7908 transitions, 192235 flow [2023-01-28 11:27:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-28 11:27:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-28 11:27:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5632 transitions. [2023-01-28 11:27:11,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527426160337555 [2023-01-28 11:27:11,318 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 5632 transitions. [2023-01-28 11:27:11,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 5632 transitions. [2023-01-28 11:27:11,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:27:11,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 5632 transitions. [2023-01-28 11:27:11,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 75.09333333333333) internal successors, (5632), 75 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:27:11,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 158.0) internal successors, (12008), 76 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:27:11,338 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 158.0) internal successors, (12008), 76 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:27:11,338 INFO L175 Difference]: Start difference. First operand has 359 places, 3832 transitions, 84741 flow. Second operand 75 states and 5632 transitions. [2023-01-28 11:27:11,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 7908 transitions, 192235 flow [2023-01-28 11:29:11,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 7908 transitions, 182024 flow, removed 5065 selfloop flow, removed 2 redundant places. [2023-01-28 11:29:12,040 INFO L231 Difference]: Finished difference. Result has 488 places, 7228 transitions, 181774 flow [2023-01-28 11:29:12,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=80279, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=181774, PETRI_PLACES=488, PETRI_TRANSITIONS=7228} [2023-01-28 11:29:12,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-01-28 11:29:12,043 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 7228 transitions, 181774 flow [2023-01-28 11:29:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 68.3529411764706) internal successors, (1162), 17 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:29:12,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:29:12,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:29:12,050 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 11:29:12,249 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 11:29:12,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:29:12,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:29:12,250 INFO L85 PathProgramCache]: Analyzing trace with hash 283146836, now seen corresponding path program 4 times [2023-01-28 11:29:12,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:29:12,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895601183] [2023-01-28 11:29:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:29:12,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:29:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:29:12,422 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 11:29:12,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:29:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895601183] [2023-01-28 11:29:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895601183] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:29:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426820355] [2023-01-28 11:29:12,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 11:29:12,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:29:12,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:29:12,423 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 11:29:12,426 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 11:29:12,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 11:29:12,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:29:12,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 11:29:12,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:29:12,765 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 11:29:12,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:29:13,186 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 11:29:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426820355] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:29:13,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:29:13,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-01-28 11:29:13,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954518289] [2023-01-28 11:29:13,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:29:13,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 11:29:13,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:29:13,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 11:29:13,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-01-28 11:29:13,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 11:29:13,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 7228 transitions, 181774 flow. Second operand has 20 states, 20 states have (on average 68.45) internal successors, (1369), 20 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:29:13,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:29:13,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 11:29:13,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:32:26,598 INFO L130 PetriNetUnfolder]: 67859/115312 cut-off events. [2023-01-28 11:32:26,599 INFO L131 PetriNetUnfolder]: For 5438769/5438769 co-relation queries the response was YES. [2023-01-28 11:32:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222760 conditions, 115312 events. 67859/115312 cut-off events. For 5438769/5438769 co-relation queries the response was YES. Maximal size of possible extension queue 6145. Compared 1139650 event pairs, 1615 based on Foata normal form. 1960/117272 useless extension candidates. Maximal degree in co-relation 1222570. Up to 22433 conditions per place. [2023-01-28 11:32:32,571 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 4667 selfloop transitions, 10218 changer transitions 3/14888 dead transitions. [2023-01-28 11:32:32,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 14888 transitions, 401841 flow [2023-01-28 11:32:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-01-28 11:32:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-01-28 11:32:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 5892 transitions. [2023-01-28 11:32:32,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843005096169653 [2023-01-28 11:32:32,596 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 5892 transitions. [2023-01-28 11:32:32,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 5892 transitions. [2023-01-28 11:32:32,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:32:32,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 5892 transitions. [2023-01-28 11:32:32,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 76.51948051948052) internal successors, (5892), 77 states have internal predecessors, (5892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:32:32,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 158.0) internal successors, (12324), 78 states have internal predecessors, (12324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:32:32,660 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 158.0) internal successors, (12324), 78 states have internal predecessors, (12324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:32:32,660 INFO L175 Difference]: Start difference. First operand has 488 places, 7228 transitions, 181774 flow. Second operand 77 states and 5892 transitions. [2023-01-28 11:32:32,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 14888 transitions, 401841 flow Received shutdown request... [2023-01-28 11:36:32,312 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 11:36:32,312 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:36:32,886 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 11:36:32,893 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 11:36:33,091 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 11:36:33,092 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 11:36:33,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 11:36:33,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 11:36:33,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 11:36:33,094 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 1] [2023-01-28 11:36:33,125 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:36:33,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:36:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:36:33 BasicIcfg [2023-01-28 11:36:33,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:36:33,128 INFO L158 Benchmark]: Toolchain (without parser) took 698282.21ms. Allocated memory was 358.6MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 317.3MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2023-01-28 11:36:33,128 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:36:33,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.80ms. Allocated memory is still 358.6MB. Free memory was 316.9MB in the beginning and 305.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:36:33,129 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.91ms. Allocated memory is still 358.6MB. Free memory was 305.8MB in the beginning and 304.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:36:33,129 INFO L158 Benchmark]: Boogie Preprocessor took 21.17ms. Allocated memory is still 358.6MB. Free memory was 304.4MB in the beginning and 303.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:36:33,129 INFO L158 Benchmark]: RCFGBuilder took 348.81ms. Allocated memory is still 358.6MB. Free memory was 302.7MB in the beginning and 286.2MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 11:36:33,129 INFO L158 Benchmark]: TraceAbstraction took 697649.27ms. Allocated memory was 358.6MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 285.5MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2023-01-28 11:36:33,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 208.80ms. Allocated memory is still 358.6MB. Free memory was 316.9MB in the beginning and 305.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.91ms. Allocated memory is still 358.6MB. Free memory was 305.8MB in the beginning and 304.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 21.17ms. Allocated memory is still 358.6MB. Free memory was 304.4MB in the beginning and 303.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 348.81ms. Allocated memory is still 358.6MB. Free memory was 302.7MB in the beginning and 286.2MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 697649.27ms. Allocated memory was 358.6MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 285.5MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 84 PlacesBefore, 30 PlacesAfterwards, 81 TransitionsBefore, 23 TransitionsAfterwards, 860 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 64 TotalNumberOfCompositions, 1280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1089, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 441, independent: 436, independent conditional: 0, independent unconditional: 436, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1089, independent: 627, independent conditional: 0, independent unconditional: 627, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 441, unknown conditional: 0, unknown unconditional: 441] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: 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: 99]: 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: 97]: 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 7 procedures, 110 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 697.5s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 683.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2689 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2689 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 491 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10045 IncrementalHoareTripleChecker+Invalid, 10536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 491 mSolverCounterUnsat, 42 mSDtfsCounter, 10045 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 322 SyntacticMatches, 7 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9911 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181774occurred in iteration=14, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 676 ConstructedInterpolants, 0 QuantifiedInterpolants, 7658 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1611 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 8/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-01-28 11:36:33,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-01-28 11:36:33.354 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243e33f1d/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243e33f1d/.metadata/.log.