./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/weaver/popl20-more-vector-add.wvr.c -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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 03:25:07,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 03:25:07,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 03:25:07,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 03:25:07,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 03:25:07,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 03:25:07,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 03:25:07,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 03:25:07,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 03:25:07,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 03:25:07,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 03:25:07,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 03:25:07,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 03:25:07,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 03:25:07,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 03:25:07,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 03:25:07,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 03:25:07,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 03:25:07,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 03:25:07,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 03:25:07,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 03:25:07,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 03:25:07,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 03:25:07,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 03:25:07,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 03:25:07,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 03:25:07,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 03:25:07,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 03:25:07,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 03:25:07,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 03:25:07,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 03:25:07,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 03:25:07,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 03:25:07,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 03:25:07,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 03:25:07,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 03:25:07,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 03:25:07,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 03:25:07,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 03:25:07,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 03:25:07,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 03:25:07,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 03:25:07,203 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 03:25:07,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 03:25:07,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 03:25:07,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 03:25:07,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 03:25:07,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 03:25:07,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 03:25:07,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 03:25:07,208 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 03:25:07,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 03:25:07,208 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 03:25:07,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 03:25:07,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 03:25:07,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 03:25:07,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 03:25:07,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 03:25:07,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 03:25:07,210 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 03:25:07,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 03:25:07,210 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 03:25:07,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 03:25:07,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 03:25:07,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 03:25:07,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 03:25:07,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:25:07,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 03:25:07,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 03:25:07,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 03:25:07,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 03:25:07,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 03:25:07,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 03:25:07,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 03:25:07,213 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 03:25:07,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 03:25:07,213 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 03:25:07,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 03:25:07,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 03:25:07,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 03:25:07,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 03:25:07,545 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 03:25:07,545 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 03:25:07,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-31 03:25:08,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 03:25:08,813 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 03:25:08,814 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-31 03:25:08,819 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8548203/72509e28b7214662b8b906e69fd5bf3c/FLAG0326ba1e9 [2023-08-31 03:25:08,831 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8548203/72509e28b7214662b8b906e69fd5bf3c [2023-08-31 03:25:08,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 03:25:08,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 03:25:08,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 03:25:08,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 03:25:08,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 03:25:08,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:25:08" (1/1) ... [2023-08-31 03:25:08,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c4764d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:08, skipping insertion in model container [2023-08-31 03:25:08,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:25:08" (1/1) ... [2023-08-31 03:25:08,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 03:25:08,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 03:25:09,017 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-08-31 03:25:09,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:25:09,034 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 03:25:09,070 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-08-31 03:25:09,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:25:09,096 INFO L208 MainTranslator]: Completed translation [2023-08-31 03:25:09,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09 WrapperNode [2023-08-31 03:25:09,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 03:25:09,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 03:25:09,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 03:25:09,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 03:25:09,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,161 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 200 [2023-08-31 03:25:09,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 03:25:09,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 03:25:09,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 03:25:09,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 03:25:09,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 03:25:09,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 03:25:09,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 03:25:09,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 03:25:09,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (1/1) ... [2023-08-31 03:25:09,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:25:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:09,270 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) [2023-08-31 03:25:09,295 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 [2023-08-31 03:25:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 03:25:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 03:25:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 03:25:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 03:25:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 03:25:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 03:25:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 03:25:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 03:25:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 03:25:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 03:25:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 03:25:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 03:25:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 03:25:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 03:25:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 03:25:09,311 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 03:25:09,470 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 03:25:09,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 03:25:09,814 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 03:25:09,831 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 03:25:09,831 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-31 03:25:09,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:25:09 BoogieIcfgContainer [2023-08-31 03:25:09,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 03:25:09,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 03:25:09,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 03:25:09,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 03:25:09,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 03:25:08" (1/3) ... [2023-08-31 03:25:09,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544ef985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:25:09, skipping insertion in model container [2023-08-31 03:25:09,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:25:09" (2/3) ... [2023-08-31 03:25:09,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544ef985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:25:09, skipping insertion in model container [2023-08-31 03:25:09,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:25:09" (3/3) ... [2023-08-31 03:25:09,842 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-08-31 03:25:09,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 03:25:09,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 03:25:09,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 03:25:09,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 03:25:09,963 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 03:25:09,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 272 transitions, 568 flow [2023-08-31 03:25:10,125 INFO L130 PetriNetUnfolder]: 25/269 cut-off events. [2023-08-31 03:25:10,126 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:25:10,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 25/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-08-31 03:25:10,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 272 transitions, 568 flow [2023-08-31 03:25:10,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 536 flow [2023-08-31 03:25:10,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 03:25:10,170 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 536 flow [2023-08-31 03:25:10,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 536 flow [2023-08-31 03:25:10,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 536 flow [2023-08-31 03:25:10,217 INFO L130 PetriNetUnfolder]: 25/259 cut-off events. [2023-08-31 03:25:10,219 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:25:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 25/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 184 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-08-31 03:25:10,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-31 03:25:17,002 INFO L134 LiptonReduction]: Checked pairs total: 4237 [2023-08-31 03:25:17,003 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-31 03:25:17,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 03:25:17,020 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;@18293b21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 03:25:17,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 03:25:17,026 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2023-08-31 03:25:17,027 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:25:17,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:17,027 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, 1] [2023-08-31 03:25:17,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:17,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1534120368, now seen corresponding path program 1 times [2023-08-31 03:25:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:17,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045722821] [2023-08-31 03:25:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:25:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045722821] [2023-08-31 03:25:17,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045722821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:25:17,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:25:17,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 03:25:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744746434] [2023-08-31 03:25:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:25:17,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:25:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:25:17,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:25:17,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 539 [2023-08-31 03:25:17,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:17,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:17,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 539 [2023-08-31 03:25:17,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:18,107 INFO L130 PetriNetUnfolder]: 1632/2322 cut-off events. [2023-08-31 03:25:18,107 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 03:25:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2322 events. 1632/2322 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10376 event pairs, 885 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 1294. Up to 755 conditions per place. [2023-08-31 03:25:18,119 INFO L137 encePairwiseOnDemand]: 529/539 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2023-08-31 03:25:18,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2023-08-31 03:25:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:25:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:25:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2023-08-31 03:25:18,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45899814471243044 [2023-08-31 03:25:18,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2023-08-31 03:25:18,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2023-08-31 03:25:18,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:18,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2023-08-31 03:25:18,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:18,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:18,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:18,168 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1237 transitions. [2023-08-31 03:25:18,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2023-08-31 03:25:18,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 03:25:18,177 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2023-08-31 03:25:18,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-31 03:25:18,182 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-31 03:25:18,182 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2023-08-31 03:25:18,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:18,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:18,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:18,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 03:25:18,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:18,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -432182153, now seen corresponding path program 1 times [2023-08-31 03:25:18,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361813756] [2023-08-31 03:25:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:18,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:18,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:18,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361813756] [2023-08-31 03:25:18,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361813756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:18,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938758292] [2023-08-31 03:25:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:18,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:18,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:18,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:18,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 03:25:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:18,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:25:18,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:18,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:25:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:18,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938758292] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:18,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:25:18,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-31 03:25:18,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144005755] [2023-08-31 03:25:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:25:18,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:25:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:18,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:25:18,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 03:25:18,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 539 [2023-08-31 03:25:18,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:18,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:18,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 539 [2023-08-31 03:25:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:19,041 INFO L130 PetriNetUnfolder]: 641/936 cut-off events. [2023-08-31 03:25:19,042 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 03:25:19,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 936 events. 641/936 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3527 event pairs, 185 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1874. Up to 543 conditions per place. [2023-08-31 03:25:19,046 INFO L137 encePairwiseOnDemand]: 533/539 looper letters, 42 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-08-31 03:25:19,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 250 flow [2023-08-31 03:25:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:25:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:25:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1130 transitions. [2023-08-31 03:25:19,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41929499072356213 [2023-08-31 03:25:19,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1130 transitions. [2023-08-31 03:25:19,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1130 transitions. [2023-08-31 03:25:19,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:19,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1130 transitions. [2023-08-31 03:25:19,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:19,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:19,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:19,059 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 1130 transitions. [2023-08-31 03:25:19,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 250 flow [2023-08-31 03:25:19,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 232 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-31 03:25:19,061 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2023-08-31 03:25:19,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-08-31 03:25:19,062 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-31 03:25:19,062 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2023-08-31 03:25:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:19,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:19,064 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:19,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 03:25:19,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:19,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:19,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 962992084, now seen corresponding path program 1 times [2023-08-31 03:25:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:19,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432449758] [2023-08-31 03:25:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:19,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432449758] [2023-08-31 03:25:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432449758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812043894] [2023-08-31 03:25:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:19,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:19,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:19,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:19,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 03:25:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:25:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:19,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:25:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:19,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812043894] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:19,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:25:19,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-31 03:25:19,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99491590] [2023-08-31 03:25:19,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:25:19,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 03:25:19,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 03:25:19,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-31 03:25:20,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 539 [2023-08-31 03:25:20,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:20,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:20,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 539 [2023-08-31 03:25:20,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:20,346 INFO L130 PetriNetUnfolder]: 829/1360 cut-off events. [2023-08-31 03:25:20,346 INFO L131 PetriNetUnfolder]: For 615/759 co-relation queries the response was YES. [2023-08-31 03:25:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1360 events. 829/1360 cut-off events. For 615/759 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6657 event pairs, 253 based on Foata normal form. 144/1328 useless extension candidates. Maximal degree in co-relation 3027. Up to 547 conditions per place. [2023-08-31 03:25:20,354 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 88 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2023-08-31 03:25:20,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 544 flow [2023-08-31 03:25:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 03:25:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 03:25:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1994 transitions. [2023-08-31 03:25:20,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41104926819212534 [2023-08-31 03:25:20,360 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1994 transitions. [2023-08-31 03:25:20,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1994 transitions. [2023-08-31 03:25:20,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:20,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1994 transitions. [2023-08-31 03:25:20,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 221.55555555555554) internal successors, (1994), 9 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:20,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:20,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:20,376 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 1994 transitions. [2023-08-31 03:25:20,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 544 flow [2023-08-31 03:25:20,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 107 transitions, 528 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 03:25:20,381 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2023-08-31 03:25:20,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-08-31 03:25:20,382 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-31 03:25:20,383 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2023-08-31 03:25:20,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:20,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:20,387 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:20,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 03:25:20,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-31 03:25:20,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:20,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:20,594 INFO L85 PathProgramCache]: Analyzing trace with hash -316438106, now seen corresponding path program 2 times [2023-08-31 03:25:20,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:20,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796556863] [2023-08-31 03:25:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:20,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:20,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:20,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796556863] [2023-08-31 03:25:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796556863] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:20,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106723171] [2023-08-31 03:25:20,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:25:20,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:20,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:20,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:20,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 03:25:20,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:25:20,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:25:20,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 03:25:20,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:20,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 03:25:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106723171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:25:20,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 03:25:20,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-31 03:25:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691739825] [2023-08-31 03:25:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:25:20,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 03:25:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 03:25:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-31 03:25:21,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-08-31 03:25:21,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:21,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:21,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-08-31 03:25:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:21,418 INFO L130 PetriNetUnfolder]: 1387/2192 cut-off events. [2023-08-31 03:25:21,418 INFO L131 PetriNetUnfolder]: For 2178/2418 co-relation queries the response was YES. [2023-08-31 03:25:21,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 2192 events. 1387/2192 cut-off events. For 2178/2418 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11091 event pairs, 553 based on Foata normal form. 241/2421 useless extension candidates. Maximal degree in co-relation 6253. Up to 1187 conditions per place. [2023-08-31 03:25:21,431 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 91 selfloop transitions, 8 changer transitions 11/114 dead transitions. [2023-08-31 03:25:21,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 114 transitions, 681 flow [2023-08-31 03:25:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:25:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:25:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1496 transitions. [2023-08-31 03:25:21,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2023-08-31 03:25:21,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1496 transitions. [2023-08-31 03:25:21,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1496 transitions. [2023-08-31 03:25:21,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:21,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1496 transitions. [2023-08-31 03:25:21,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:21,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:21,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:21,444 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 1496 transitions. [2023-08-31 03:25:21,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 114 transitions, 681 flow [2023-08-31 03:25:21,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 114 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 03:25:21,453 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2023-08-31 03:25:21,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-08-31 03:25:21,454 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-08-31 03:25:21,455 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2023-08-31 03:25:21,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:21,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:21,455 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:21,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 03:25:21,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:21,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:21,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:21,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2030662522, now seen corresponding path program 3 times [2023-08-31 03:25:21,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:21,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199536721] [2023-08-31 03:25:21,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199536721] [2023-08-31 03:25:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199536721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523687763] [2023-08-31 03:25:21,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:25:21,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:21,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:21,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:21,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 03:25:22,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:25:22,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:25:22,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 03:25:22,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:22,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 03:25:22,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523687763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:25:22,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 03:25:22,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-31 03:25:22,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139380500] [2023-08-31 03:25:22,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:25:22,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 03:25:22,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:22,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 03:25:22,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-31 03:25:22,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-08-31 03:25:22,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:22,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:22,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-08-31 03:25:22,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:22,543 INFO L130 PetriNetUnfolder]: 1615/2609 cut-off events. [2023-08-31 03:25:22,543 INFO L131 PetriNetUnfolder]: For 4408/4688 co-relation queries the response was YES. [2023-08-31 03:25:22,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8366 conditions, 2609 events. 1615/2609 cut-off events. For 4408/4688 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14344 event pairs, 589 based on Foata normal form. 281/2852 useless extension candidates. Maximal degree in co-relation 8337. Up to 1151 conditions per place. [2023-08-31 03:25:22,562 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 87 selfloop transitions, 15 changer transitions 11/117 dead transitions. [2023-08-31 03:25:22,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 757 flow [2023-08-31 03:25:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:25:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:25:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1504 transitions. [2023-08-31 03:25:22,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650587507730365 [2023-08-31 03:25:22,567 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1504 transitions. [2023-08-31 03:25:22,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1504 transitions. [2023-08-31 03:25:22,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:22,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1504 transitions. [2023-08-31 03:25:22,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:22,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:22,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:22,578 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 1504 transitions. [2023-08-31 03:25:22,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 757 flow [2023-08-31 03:25:22,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 742 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 03:25:22,600 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2023-08-31 03:25:22,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-08-31 03:25:22,603 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-08-31 03:25:22,603 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2023-08-31 03:25:22,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:22,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:22,604 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:22,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 03:25:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:22,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:22,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1967518296, now seen corresponding path program 4 times [2023-08-31 03:25:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120979105] [2023-08-31 03:25:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:23,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:23,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120979105] [2023-08-31 03:25:23,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120979105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:23,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958617524] [2023-08-31 03:25:23,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:25:23,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:23,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:23,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:23,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 03:25:23,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:25:23,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:25:23,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:25:23,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:23,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:25:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:23,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958617524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:25:23,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:25:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-08-31 03:25:23,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348286708] [2023-08-31 03:25:23,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:25:23,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 03:25:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:23,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 03:25:23,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-31 03:25:23,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 539 [2023-08-31 03:25:23,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:23,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:23,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 539 [2023-08-31 03:25:23,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:24,712 INFO L130 PetriNetUnfolder]: 2205/3638 cut-off events. [2023-08-31 03:25:24,713 INFO L131 PetriNetUnfolder]: For 9088/9088 co-relation queries the response was YES. [2023-08-31 03:25:24,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12406 conditions, 3638 events. 2205/3638 cut-off events. For 9088/9088 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21084 event pairs, 50 based on Foata normal form. 14/3648 useless extension candidates. Maximal degree in co-relation 12374. Up to 984 conditions per place. [2023-08-31 03:25:24,742 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 160 selfloop transitions, 99 changer transitions 0/262 dead transitions. [2023-08-31 03:25:24,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 262 transitions, 1958 flow [2023-08-31 03:25:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 03:25:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 03:25:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4928 transitions. [2023-08-31 03:25:24,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2023-08-31 03:25:24,754 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4928 transitions. [2023-08-31 03:25:24,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4928 transitions. [2023-08-31 03:25:24,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:24,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4928 transitions. [2023-08-31 03:25:24,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 224.0) internal successors, (4928), 22 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:24,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:24,783 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:24,784 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 4928 transitions. [2023-08-31 03:25:24,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 262 transitions, 1958 flow [2023-08-31 03:25:24,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 262 transitions, 1912 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-31 03:25:24,814 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2023-08-31 03:25:24,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2023-08-31 03:25:24,815 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-08-31 03:25:24,815 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2023-08-31 03:25:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:24,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:24,816 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:24,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 03:25:25,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:25,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:25,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash 902285986, now seen corresponding path program 5 times [2023-08-31 03:25:25,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:25,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622343863] [2023-08-31 03:25:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:25,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:25,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622343863] [2023-08-31 03:25:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622343863] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:25,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286562231] [2023-08-31 03:25:25,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:25:25,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:25,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 03:25:25,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:25:25,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:25:25,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:25:25,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:25,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:25:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286562231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:25:25,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:25:25,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-08-31 03:25:25,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019733469] [2023-08-31 03:25:25,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:25:25,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 03:25:25,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:25,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 03:25:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-31 03:25:26,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 539 [2023-08-31 03:25:26,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 16 states, 16 states have (on average 218.9375) internal successors, (3503), 16 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:26,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:26,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 539 [2023-08-31 03:25:26,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:27,533 INFO L130 PetriNetUnfolder]: 3564/5780 cut-off events. [2023-08-31 03:25:27,533 INFO L131 PetriNetUnfolder]: For 31905/31905 co-relation queries the response was YES. [2023-08-31 03:25:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25650 conditions, 5780 events. 3564/5780 cut-off events. For 31905/31905 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35720 event pairs, 326 based on Foata normal form. 22/5800 useless extension candidates. Maximal degree in co-relation 25566. Up to 1335 conditions per place. [2023-08-31 03:25:27,596 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 248 selfloop transitions, 167 changer transitions 0/418 dead transitions. [2023-08-31 03:25:27,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 418 transitions, 4189 flow [2023-08-31 03:25:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 03:25:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 03:25:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4304 transitions. [2023-08-31 03:25:27,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027145786544284 [2023-08-31 03:25:27,609 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4304 transitions. [2023-08-31 03:25:27,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4304 transitions. [2023-08-31 03:25:27,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:27,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4304 transitions. [2023-08-31 03:25:27,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 226.52631578947367) internal successors, (4304), 19 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:27,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:27,641 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:27,641 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 4304 transitions. [2023-08-31 03:25:27,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 418 transitions, 4189 flow [2023-08-31 03:25:27,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 418 transitions, 4052 flow, removed 63 selfloop flow, removed 3 redundant places. [2023-08-31 03:25:27,865 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2023-08-31 03:25:27,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2023-08-31 03:25:27,866 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-08-31 03:25:27,866 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2023-08-31 03:25:27,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 218.9375) internal successors, (3503), 16 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:27,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:27,867 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:27,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 03:25:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:28,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:28,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1514077468, now seen corresponding path program 6 times [2023-08-31 03:25:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:28,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108147474] [2023-08-31 03:25:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:25:28,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108147474] [2023-08-31 03:25:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108147474] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486048164] [2023-08-31 03:25:28,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:25:28,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:28,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:28,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:28,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 03:25:28,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 03:25:28,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:25:28,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 03:25:28,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 03:25:28,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 03:25:28,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486048164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:25:28,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 03:25:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-31 03:25:28,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430478022] [2023-08-31 03:25:28,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:25:28,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 03:25:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:25:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 03:25:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-31 03:25:28,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-08-31 03:25:28,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:28,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:25:28,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-08-31 03:25:28,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:25:29,452 INFO L130 PetriNetUnfolder]: 3494/5578 cut-off events. [2023-08-31 03:25:29,452 INFO L131 PetriNetUnfolder]: For 52534/52636 co-relation queries the response was YES. [2023-08-31 03:25:29,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29719 conditions, 5578 events. 3494/5578 cut-off events. For 52534/52636 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33724 event pairs, 878 based on Foata normal form. 98/5665 useless extension candidates. Maximal degree in co-relation 29617. Up to 2634 conditions per place. [2023-08-31 03:25:29,503 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 196 selfloop transitions, 67 changer transitions 13/307 dead transitions. [2023-08-31 03:25:29,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 307 transitions, 3981 flow [2023-08-31 03:25:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:25:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:25:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1498 transitions. [2023-08-31 03:25:29,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2023-08-31 03:25:29,508 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1498 transitions. [2023-08-31 03:25:29,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1498 transitions. [2023-08-31 03:25:29,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:25:29,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1498 transitions. [2023-08-31 03:25:29,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.66666666666666) internal successors, (1498), 6 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:29,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:29,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:29,517 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 1498 transitions. [2023-08-31 03:25:29,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 307 transitions, 3981 flow [2023-08-31 03:25:29,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 307 transitions, 3791 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-08-31 03:25:29,801 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2023-08-31 03:25:29,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2023-08-31 03:25:29,802 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-08-31 03:25:29,802 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2023-08-31 03:25:29,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:25:29,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:25:29,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:25:29,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 03:25:30,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:30,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:25:30,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:25:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash 205007497, now seen corresponding path program 1 times [2023-08-31 03:25:30,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:25:30,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300817028] [2023-08-31 03:25:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:25:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:25:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:25:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300817028] [2023-08-31 03:25:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300817028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:25:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499555318] [2023-08-31 03:25:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:25:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:25:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:25:33,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:25:33,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 03:25:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:25:33,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 03:25:33,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:25:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:33,927 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2023-08-31 03:25:33,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2023-08-31 03:25:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,073 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-31 03:25:34,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-08-31 03:25:34,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,220 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-31 03:25:34,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-08-31 03:25:34,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:34,428 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-31 03:25:34,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-08-31 03:25:35,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-08-31 03:25:35,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:35,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:35,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:35,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-08-31 03:25:35,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:35,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:35,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:25:35,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-08-31 03:25:35,983 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:25:35,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-08-31 03:25:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:25:36,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:26:01,003 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-08-31 03:26:01,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 190 [2023-08-31 03:26:01,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:26:01,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233057 treesize of output 224681 [2023-08-31 03:26:05,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:26:05,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36342 treesize of output 31718 [2023-08-31 03:26:09,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:26:09,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41654 treesize of output 31942 [2023-08-31 03:26:14,543 WARN L222 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 1044 DAG size of output: 1035 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-31 03:26:22,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:26:22,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10427 treesize of output 9751 [2023-08-31 03:28:11,518 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:31:13,568 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:34:33,580 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 03:37:51,482 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15