./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:23:51,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:23:51,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:23:51,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:23:51,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:23:51,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:23:51,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:23:51,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:23:51,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:23:51,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:23:51,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:23:51,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:23:51,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:23:51,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:23:51,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:23:51,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:23:51,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:23:51,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:23:51,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:23:51,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:23:51,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:23:51,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:23:51,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:23:51,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:23:51,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:23:51,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:23:51,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:23:51,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:23:51,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:23:51,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:23:51,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:23:51,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:23:51,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:23:51,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:23:51,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:23:51,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:23:51,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:23:51,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:23:51,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:23:51,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:23:51,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:23:51,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:23:51,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:23:51,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:23:51,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:23:51,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:23:51,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:23:51,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:23:51,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:23:51,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:23:51,269 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:23:51,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:23:51,270 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:23:51,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:23:51,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:23:51,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:23:51,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:23:51,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:23:51,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:23:51,271 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:23:51,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:23:51,271 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:23:51,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:23:51,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:23:51,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:23:51,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:23:51,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:23:51,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:23:51,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:23:51,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:23:51,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:23:51,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:23:51,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:23:51,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:23:51,274 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:23:51,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:23:51,274 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:23:51,274 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:23:51,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:23:51,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:23:51,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:23:51,630 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:23:51,631 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:23:51,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-09-01 11:23:52,872 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:23:53,105 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:23:53,106 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-09-01 11:23:53,119 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fe2a846/f8a69f17d53e43c793bb35f1d19ea9cf/FLAGd760509d3 [2023-09-01 11:23:53,135 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fe2a846/f8a69f17d53e43c793bb35f1d19ea9cf [2023-09-01 11:23:53,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:23:53,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:23:53,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:23:53,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:23:53,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:23:53,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7f1d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53, skipping insertion in model container [2023-09-01 11:23:53,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:23:53,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:23:53,379 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-09-01 11:23:53,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:23:53,558 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:23:53,570 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-09-01 11:23:53,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:23:53,657 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:23:53,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53 WrapperNode [2023-09-01 11:23:53,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:23:53,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:23:53,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:23:53,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:23:53,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,729 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 143 [2023-09-01 11:23:53,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:23:53,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:23:53,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:23:53,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:23:53,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:23:53,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:23:53,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:23:53,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:23:53,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (1/1) ... [2023-09-01 11:23:53,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:23:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:23:53,821 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) [2023-09-01 11:23:53,846 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 [2023-09-01 11:23:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:23:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:23:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:23:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:23:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:23:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:23:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:23:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:23:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:23:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:23:53,879 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:23:54,077 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:23:54,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:23:54,369 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:23:54,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:23:54,380 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 11:23:54,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:23:54 BoogieIcfgContainer [2023-09-01 11:23:54,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:23:54,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:23:54,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:23:54,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:23:54,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:23:53" (1/3) ... [2023-09-01 11:23:54,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55964392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:23:54, skipping insertion in model container [2023-09-01 11:23:54,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:23:53" (2/3) ... [2023-09-01 11:23:54,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55964392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:23:54, skipping insertion in model container [2023-09-01 11:23:54,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:23:54" (3/3) ... [2023-09-01 11:23:54,390 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-09-01 11:23:54,396 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:23:54,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:23:54,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-09-01 11:23:54,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:23:54,463 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:23:54,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 166 transitions, 337 flow [2023-09-01 11:23:54,568 INFO L130 PetriNetUnfolder]: 8/168 cut-off events. [2023-09-01 11:23:54,569 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:23:54,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 168 events. 8/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 148 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2023-09-01 11:23:54,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 166 transitions, 337 flow [2023-09-01 11:23:54,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 164 transitions, 331 flow [2023-09-01 11:23:54,582 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:23:54,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 164 transitions, 331 flow [2023-09-01 11:23:54,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 164 transitions, 331 flow [2023-09-01 11:23:54,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 164 transitions, 331 flow [2023-09-01 11:23:54,622 INFO L130 PetriNetUnfolder]: 8/164 cut-off events. [2023-09-01 11:23:54,622 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:23:54,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 164 events. 8/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2023-09-01 11:23:54,628 INFO L119 LiptonReduction]: Number of co-enabled transitions 6840 [2023-09-01 11:23:59,072 INFO L134 LiptonReduction]: Checked pairs total: 11483 [2023-09-01 11:23:59,072 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 11:23:59,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 11:23:59,089 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=true, 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;@2fa94b82, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:23:59,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 11:23:59,094 INFO L130 PetriNetUnfolder]: 1/14 cut-off events. [2023-09-01 11:23:59,094 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:23:59,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:23:59,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 11:23:59,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:23:59,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:23:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1949297308, now seen corresponding path program 1 times [2023-09-01 11:23:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:23:59,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139897066] [2023-09-01 11:23:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:23:59,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:23:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:23:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:23:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:23:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139897066] [2023-09-01 11:23:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139897066] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:23:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:23:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 11:23:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053794727] [2023-09-01 11:23:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:23:59,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:23:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:23:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:23:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:23:59,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 338 [2023-09-01 11:23:59,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:23:59,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:23:59,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 338 [2023-09-01 11:23:59,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:23:59,852 INFO L130 PetriNetUnfolder]: 119/311 cut-off events. [2023-09-01 11:23:59,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:23:59,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 311 events. 119/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1290 event pairs, 10 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 563. Up to 169 conditions per place. [2023-09-01 11:23:59,855 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 34 selfloop transitions, 5 changer transitions 11/55 dead transitions. [2023-09-01 11:23:59,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 213 flow [2023-09-01 11:23:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:23:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:23:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 797 transitions. [2023-09-01 11:23:59,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47159763313609465 [2023-09-01 11:23:59,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 797 transitions. [2023-09-01 11:23:59,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 797 transitions. [2023-09-01 11:23:59,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:23:59,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 797 transitions. [2023-09-01 11:23:59,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:23:59,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:23:59,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:23:59,892 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 67 flow. Second operand 5 states and 797 transitions. [2023-09-01 11:23:59,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 213 flow [2023-09-01 11:23:59,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 11:23:59,896 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 83 flow [2023-09-01 11:23:59,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-09-01 11:23:59,900 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-09-01 11:23:59,901 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 83 flow [2023-09-01 11:23:59,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:23:59,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:23:59,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:23:59,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:23:59,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:23:59,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:23:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash 668944993, now seen corresponding path program 1 times [2023-09-01 11:23:59,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:23:59,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344854117] [2023-09-01 11:23:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:23:59,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:23:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344854117] [2023-09-01 11:24:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344854117] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:00,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:00,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:24:00,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337262704] [2023-09-01 11:24:00,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:00,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 11:24:00,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 11:24:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 11:24:00,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 338 [2023-09-01 11:24:00,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:00,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 338 [2023-09-01 11:24:00,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:00,216 INFO L130 PetriNetUnfolder]: 94/257 cut-off events. [2023-09-01 11:24:00,216 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:24:00,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 257 events. 94/257 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1059 event pairs, 32 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 537. Up to 120 conditions per place. [2023-09-01 11:24:00,219 INFO L137 encePairwiseOnDemand]: 332/338 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2023-09-01 11:24:00,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 240 flow [2023-09-01 11:24:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 11:24:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 11:24:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1212 transitions. [2023-09-01 11:24:00,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44822485207100593 [2023-09-01 11:24:00,223 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1212 transitions. [2023-09-01 11:24:00,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1212 transitions. [2023-09-01 11:24:00,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:00,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1212 transitions. [2023-09-01 11:24:00,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 151.5) internal successors, (1212), 8 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,234 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,234 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 83 flow. Second operand 8 states and 1212 transitions. [2023-09-01 11:24:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 240 flow [2023-09-01 11:24:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 11:24:00,236 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 126 flow [2023-09-01 11:24:00,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-09-01 11:24:00,237 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-09-01 11:24:00,237 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 126 flow [2023-09-01 11:24:00,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:00,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:00,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:24:00,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:00,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1660388124, now seen corresponding path program 1 times [2023-09-01 11:24:00,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:00,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657035023] [2023-09-01 11:24:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:00,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:00,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657035023] [2023-09-01 11:24:00,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657035023] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:00,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:00,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:24:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987769011] [2023-09-01 11:24:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:00,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 11:24:00,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 11:24:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 11:24:00,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-09-01 11:24:00,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:00,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-09-01 11:24:00,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:00,389 INFO L130 PetriNetUnfolder]: 84/241 cut-off events. [2023-09-01 11:24:00,389 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-09-01 11:24:00,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 241 events. 84/241 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 970 event pairs, 31 based on Foata normal form. 15/256 useless extension candidates. Maximal degree in co-relation 550. Up to 125 conditions per place. [2023-09-01 11:24:00,391 INFO L137 encePairwiseOnDemand]: 330/338 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-09-01 11:24:00,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 227 flow [2023-09-01 11:24:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 11:24:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 11:24:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-09-01 11:24:00,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46449704142011833 [2023-09-01 11:24:00,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-09-01 11:24:00,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-09-01 11:24:00,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:00,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-09-01 11:24:00,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,399 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 126 flow. Second operand 3 states and 471 transitions. [2023-09-01 11:24:00,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 227 flow [2023-09-01 11:24:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 205 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 11:24:00,402 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 127 flow [2023-09-01 11:24:00,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-09-01 11:24:00,402 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-09-01 11:24:00,403 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 127 flow [2023-09-01 11:24:00,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:00,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:00,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:24:00,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:00,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1388907553, now seen corresponding path program 1 times [2023-09-01 11:24:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735498804] [2023-09-01 11:24:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:00,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735498804] [2023-09-01 11:24:00,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735498804] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:00,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:00,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 11:24:00,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885464875] [2023-09-01 11:24:00,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:00,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:24:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:24:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:24:00,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-09-01 11:24:00,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:00,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-09-01 11:24:00,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:00,795 INFO L130 PetriNetUnfolder]: 63/212 cut-off events. [2023-09-01 11:24:00,795 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 11:24:00,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 212 events. 63/212 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 925 event pairs, 31 based on Foata normal form. 10/217 useless extension candidates. Maximal degree in co-relation 547. Up to 110 conditions per place. [2023-09-01 11:24:00,797 INFO L137 encePairwiseOnDemand]: 330/338 looper letters, 41 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2023-09-01 11:24:00,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 311 flow [2023-09-01 11:24:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 11:24:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 11:24:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1196 transitions. [2023-09-01 11:24:00,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-09-01 11:24:00,801 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1196 transitions. [2023-09-01 11:24:00,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1196 transitions. [2023-09-01 11:24:00,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:00,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1196 transitions. [2023-09-01 11:24:00,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.5) internal successors, (1196), 8 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,810 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,810 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 127 flow. Second operand 8 states and 1196 transitions. [2023-09-01 11:24:00,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 311 flow [2023-09-01 11:24:00,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 11:24:00,813 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 178 flow [2023-09-01 11:24:00,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-09-01 11:24:00,814 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-09-01 11:24:00,814 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 178 flow [2023-09-01 11:24:00,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:00,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:00,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:00,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:24:00,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:00,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1288531683, now seen corresponding path program 1 times [2023-09-01 11:24:00,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:00,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844382987] [2023-09-01 11:24:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:00,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:00,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844382987] [2023-09-01 11:24:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844382987] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:00,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:00,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 11:24:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693672537] [2023-09-01 11:24:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:00,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 11:24:00,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 11:24:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 11:24:01,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 338 [2023-09-01 11:24:01,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:01,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 338 [2023-09-01 11:24:01,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:01,118 INFO L130 PetriNetUnfolder]: 62/211 cut-off events. [2023-09-01 11:24:01,118 INFO L131 PetriNetUnfolder]: For 140/142 co-relation queries the response was YES. [2023-09-01 11:24:01,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 211 events. 62/211 cut-off events. For 140/142 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 919 event pairs, 29 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 593. Up to 116 conditions per place. [2023-09-01 11:24:01,120 INFO L137 encePairwiseOnDemand]: 333/338 looper letters, 39 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-09-01 11:24:01,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 335 flow [2023-09-01 11:24:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:24:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:24:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-09-01 11:24:01,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532544378698225 [2023-09-01 11:24:01,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-09-01 11:24:01,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-09-01 11:24:01,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:01,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-09-01 11:24:01,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,129 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 178 flow. Second operand 5 states and 766 transitions. [2023-09-01 11:24:01,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 335 flow [2023-09-01 11:24:01,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 11:24:01,132 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 204 flow [2023-09-01 11:24:01,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-09-01 11:24:01,133 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-09-01 11:24:01,133 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 204 flow [2023-09-01 11:24:01,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:01,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:01,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:24:01,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:01,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 344959075, now seen corresponding path program 1 times [2023-09-01 11:24:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:01,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189239731] [2023-09-01 11:24:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:01,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:01,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189239731] [2023-09-01 11:24:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189239731] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:24:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74608550] [2023-09-01 11:24:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 11:24:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 11:24:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 11:24:01,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 338 [2023-09-01 11:24:01,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:01,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 338 [2023-09-01 11:24:01,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:01,365 INFO L130 PetriNetUnfolder]: 58/197 cut-off events. [2023-09-01 11:24:01,366 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-09-01 11:24:01,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 197 events. 58/197 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 837 event pairs, 32 based on Foata normal form. 5/198 useless extension candidates. Maximal degree in co-relation 594. Up to 109 conditions per place. [2023-09-01 11:24:01,367 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 40 selfloop transitions, 10 changer transitions 1/56 dead transitions. [2023-09-01 11:24:01,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 374 flow [2023-09-01 11:24:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 11:24:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 11:24:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2023-09-01 11:24:01,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452240067624683 [2023-09-01 11:24:01,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2023-09-01 11:24:01,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2023-09-01 11:24:01,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:01,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2023-09-01 11:24:01,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,378 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 204 flow. Second operand 7 states and 1070 transitions. [2023-09-01 11:24:01,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 374 flow [2023-09-01 11:24:01,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 11:24:01,381 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 247 flow [2023-09-01 11:24:01,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2023-09-01 11:24:01,382 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-09-01 11:24:01,382 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 247 flow [2023-09-01 11:24:01,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:01,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:01,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:24:01,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:01,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1328339176, now seen corresponding path program 1 times [2023-09-01 11:24:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:01,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669828930] [2023-09-01 11:24:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:01,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669828930] [2023-09-01 11:24:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669828930] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:01,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:01,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 11:24:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021946931] [2023-09-01 11:24:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:01,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:24:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:24:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:24:01,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-09-01 11:24:01,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:01,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-09-01 11:24:01,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:01,711 INFO L130 PetriNetUnfolder]: 57/187 cut-off events. [2023-09-01 11:24:01,712 INFO L131 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2023-09-01 11:24:01,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 187 events. 57/187 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 752 event pairs, 17 based on Foata normal form. 4/190 useless extension candidates. Maximal degree in co-relation 620. Up to 88 conditions per place. [2023-09-01 11:24:01,713 INFO L137 encePairwiseOnDemand]: 333/338 looper letters, 38 selfloop transitions, 8 changer transitions 3/54 dead transitions. [2023-09-01 11:24:01,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 407 flow [2023-09-01 11:24:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 11:24:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 11:24:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2023-09-01 11:24:01,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467455621301775 [2023-09-01 11:24:01,715 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2023-09-01 11:24:01,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2023-09-01 11:24:01,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:01,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2023-09-01 11:24:01,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,719 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,720 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 247 flow. Second operand 4 states and 604 transitions. [2023-09-01 11:24:01,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 407 flow [2023-09-01 11:24:01,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 395 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 11:24:01,722 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 243 flow [2023-09-01 11:24:01,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-09-01 11:24:01,723 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-09-01 11:24:01,723 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 243 flow [2023-09-01 11:24:01,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:01,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:01,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:24:01,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:01,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1671539549, now seen corresponding path program 1 times [2023-09-01 11:24:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081407380] [2023-09-01 11:24:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:01,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:01,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081407380] [2023-09-01 11:24:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081407380] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:01,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:01,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 11:24:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224398524] [2023-09-01 11:24:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:24:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:24:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:24:01,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-09-01 11:24:01,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:01,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:01,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-09-01 11:24:01,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:01,989 INFO L130 PetriNetUnfolder]: 46/163 cut-off events. [2023-09-01 11:24:01,989 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-09-01 11:24:01,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 163 events. 46/163 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 613 event pairs, 7 based on Foata normal form. 6/168 useless extension candidates. Maximal degree in co-relation 556. Up to 58 conditions per place. [2023-09-01 11:24:01,991 INFO L137 encePairwiseOnDemand]: 332/338 looper letters, 36 selfloop transitions, 8 changer transitions 1/53 dead transitions. [2023-09-01 11:24:01,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 389 flow [2023-09-01 11:24:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 11:24:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 11:24:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1191 transitions. [2023-09-01 11:24:01,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404585798816568 [2023-09-01 11:24:01,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1191 transitions. [2023-09-01 11:24:01,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1191 transitions. [2023-09-01 11:24:01,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:01,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1191 transitions. [2023-09-01 11:24:01,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 148.875) internal successors, (1191), 8 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,002 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,002 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 243 flow. Second operand 8 states and 1191 transitions. [2023-09-01 11:24:02,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 389 flow [2023-09-01 11:24:02,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 11:24:02,005 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 239 flow [2023-09-01 11:24:02,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2023-09-01 11:24:02,006 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2023-09-01 11:24:02,006 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 239 flow [2023-09-01 11:24:02,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:02,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:24:02,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:02,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1411106432, now seen corresponding path program 1 times [2023-09-01 11:24:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:02,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442466899] [2023-09-01 11:24:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442466899] [2023-09-01 11:24:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442466899] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:02,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:02,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 11:24:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237563733] [2023-09-01 11:24:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 11:24:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 11:24:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 11:24:02,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 338 [2023-09-01 11:24:02,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:02,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 338 [2023-09-01 11:24:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:02,441 INFO L130 PetriNetUnfolder]: 42/153 cut-off events. [2023-09-01 11:24:02,441 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2023-09-01 11:24:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 153 events. 42/153 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 550 event pairs, 7 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 524. Up to 40 conditions per place. [2023-09-01 11:24:02,442 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 38 selfloop transitions, 11 changer transitions 2/59 dead transitions. [2023-09-01 11:24:02,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 427 flow [2023-09-01 11:24:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 11:24:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 11:24:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1749 transitions. [2023-09-01 11:24:02,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312130177514793 [2023-09-01 11:24:02,447 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1749 transitions. [2023-09-01 11:24:02,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1749 transitions. [2023-09-01 11:24:02,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:02,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1749 transitions. [2023-09-01 11:24:02,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.75) internal successors, (1749), 12 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 338.0) internal successors, (4394), 13 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,458 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 338.0) internal successors, (4394), 13 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,458 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 239 flow. Second operand 12 states and 1749 transitions. [2023-09-01 11:24:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 427 flow [2023-09-01 11:24:02,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 399 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-09-01 11:24:02,461 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 234 flow [2023-09-01 11:24:02,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-09-01 11:24:02,462 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-09-01 11:24:02,462 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 234 flow [2023-09-01 11:24:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:02,463 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] [2023-09-01 11:24:02,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:24:02,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:02,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1136432958, now seen corresponding path program 1 times [2023-09-01 11:24:02,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024720668] [2023-09-01 11:24:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:02,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:02,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024720668] [2023-09-01 11:24:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024720668] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:02,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:02,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 11:24:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434103465] [2023-09-01 11:24:02,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:02,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 11:24:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 11:24:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 11:24:02,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 338 [2023-09-01 11:24:02,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:02,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 338 [2023-09-01 11:24:02,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:02,802 INFO L130 PetriNetUnfolder]: 41/149 cut-off events. [2023-09-01 11:24:02,802 INFO L131 PetriNetUnfolder]: For 192/196 co-relation queries the response was YES. [2023-09-01 11:24:02,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 149 events. 41/149 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 508 event pairs, 18 based on Foata normal form. 7/154 useless extension candidates. Maximal degree in co-relation 510. Up to 57 conditions per place. [2023-09-01 11:24:02,803 INFO L137 encePairwiseOnDemand]: 332/338 looper letters, 32 selfloop transitions, 13 changer transitions 5/55 dead transitions. [2023-09-01 11:24:02,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 397 flow [2023-09-01 11:24:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 11:24:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 11:24:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2023-09-01 11:24:02,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43913778529163144 [2023-09-01 11:24:02,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2023-09-01 11:24:02,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2023-09-01 11:24:02,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:02,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2023-09-01 11:24:02,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,813 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 234 flow. Second operand 7 states and 1039 transitions. [2023-09-01 11:24:02,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 397 flow [2023-09-01 11:24:02,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 372 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-09-01 11:24:02,815 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 240 flow [2023-09-01 11:24:02,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-09-01 11:24:02,816 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-09-01 11:24:02,816 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 240 flow [2023-09-01 11:24:02,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:02,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:02,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:02,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:24:02,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 11:24:02,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1190116540, now seen corresponding path program 1 times [2023-09-01 11:24:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:02,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350739619] [2023-09-01 11:24:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:02,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:24:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:24:03,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:24:03,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350739619] [2023-09-01 11:24:03,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350739619] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:24:03,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:24:03,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 11:24:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210837651] [2023-09-01 11:24:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:24:03,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:24:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:24:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:24:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:24:03,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-09-01 11:24:03,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:03,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:24:03,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-09-01 11:24:03,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:24:03,242 INFO L130 PetriNetUnfolder]: 22/96 cut-off events. [2023-09-01 11:24:03,243 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-09-01 11:24:03,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 96 events. 22/96 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 267 event pairs, 4 based on Foata normal form. 15/111 useless extension candidates. Maximal degree in co-relation 335. Up to 78 conditions per place. [2023-09-01 11:24:03,243 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-09-01 11:24:03,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 42 transitions, 314 flow [2023-09-01 11:24:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 11:24:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 11:24:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-09-01 11:24:03,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437869822485207 [2023-09-01 11:24:03,246 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-09-01 11:24:03,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-09-01 11:24:03,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:24:03,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-09-01 11:24:03,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:03,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:03,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:03,250 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 240 flow. Second operand 4 states and 600 transitions. [2023-09-01 11:24:03,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 42 transitions, 314 flow [2023-09-01 11:24:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 289 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 11:24:03,251 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-09-01 11:24:03,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-09-01 11:24:03,252 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2023-09-01 11:24:03,252 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-09-01 11:24:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:24:03,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-09-01 11:24:03,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-09-01 11:24:03,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-09-01 11:24:03,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-09-01 11:24:03,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-09-01 11:24:03,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-09-01 11:24:03,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-09-01 11:24:03,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:24:03,256 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:24:03,260 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 11:24:03,260 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 11:24:03,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 11:24:03 BasicIcfg [2023-09-01 11:24:03,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 11:24:03,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 11:24:03,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 11:24:03,263 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 11:24:03,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:23:54" (3/4) ... [2023-09-01 11:24:03,266 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 11:24:03,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 11:24:03,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 11:24:03,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 11:24:03,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 11:24:03,275 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 11:24:03,302 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 11:24:03,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 11:24:03,303 INFO L158 Benchmark]: Toolchain (without parser) took 10164.51ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 36.8MB in the beginning and 63.1MB in the end (delta: -26.3MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,303 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:24:03,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.19ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 38.1MB in the end (delta: -1.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.90ms. Allocated memory is still 71.3MB. Free memory was 37.9MB in the beginning and 35.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,304 INFO L158 Benchmark]: Boogie Preprocessor took 53.92ms. Allocated memory is still 71.3MB. Free memory was 35.5MB in the beginning and 34.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,304 INFO L158 Benchmark]: RCFGBuilder took 597.70ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 34.0MB in the beginning and 50.5MB in the end (delta: -16.5MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,304 INFO L158 Benchmark]: TraceAbstraction took 8878.26ms. Allocated memory was 86.0MB in the beginning and 163.6MB in the end (delta: 77.6MB). Free memory was 50.0MB in the beginning and 66.3MB in the end (delta: -16.3MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,305 INFO L158 Benchmark]: Witness Printer took 39.41ms. Allocated memory is still 163.6MB. Free memory was 66.3MB in the beginning and 63.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 11:24:03,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.19ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 38.1MB in the end (delta: -1.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.90ms. Allocated memory is still 71.3MB. Free memory was 37.9MB in the beginning and 35.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.92ms. Allocated memory is still 71.3MB. Free memory was 35.5MB in the beginning and 34.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 597.70ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 34.0MB in the beginning and 50.5MB in the end (delta: -16.5MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8878.26ms. Allocated memory was 86.0MB in the beginning and 163.6MB in the end (delta: 77.6MB). Free memory was 50.0MB in the beginning and 66.3MB in the end (delta: -16.3MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Witness Printer took 39.41ms. Allocated memory is still 163.6MB. Free memory was 66.3MB in the beginning and 63.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 160 PlacesBefore, 33 PlacesAfterwards, 164 TransitionsBefore, 32 TransitionsAfterwards, 6840 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 5 ChoiceCompositions, 172 TotalNumberOfCompositions, 11483 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6171, independent: 5919, independent conditional: 0, independent unconditional: 5919, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3845, independent: 3793, independent conditional: 0, independent unconditional: 3793, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6171, independent: 2126, independent conditional: 0, independent unconditional: 2126, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 3845, unknown conditional: 0, unknown unconditional: 3845] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 230 locations, 7 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: 8.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1185 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 841 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 380 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2009 IncrementalHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 104 mSDtfsCounter, 2009 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=6, InterpolantAutomatonStates: 71, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 11:24:03,337 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE