./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:42:17,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:42:17,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:42:17,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:42:17,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:42:17,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:42:17,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:42:17,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:42:17,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:42:17,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:42:17,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:42:17,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:42:17,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:42:17,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:42:17,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:42:17,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:42:17,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:42:17,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:42:17,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:42:17,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:42:17,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:42:17,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:42:17,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:42:17,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:42:17,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:42:17,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:42:17,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:42:17,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:42:17,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:42:17,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:42:17,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:42:17,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:42:17,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:42:17,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:42:17,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:42:17,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:42:17,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:42:17,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:42:17,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:42:17,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:42:17,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:42:17,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:42:17,958 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:42:17,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:42:17,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:42:17,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:42:17,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:42:17,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:42:17,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:42:17,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:42:17,961 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:42:17,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:42:17,962 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:42:17,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:42:17,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:42:17,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:42:17,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:42:17,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:42:17,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:42:17,963 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:42:17,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:42:17,964 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:42:17,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:42:17,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:42:17,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:42:17,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:42:17,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:42:17,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:42:17,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:42:17,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:42:17,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:42:17,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:42:17,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:42:17,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:42:17,966 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:42:17,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:42:17,967 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:42:17,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:42:18,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:42:18,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:42:18,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:42:18,277 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:42:18,277 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:42:18,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-09-01 12:42:19,377 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:42:19,575 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:42:19,575 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-09-01 12:42:19,581 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139650bc0/3bbca3471ae547c684b48f992888818d/FLAG6bb24ea28 [2023-09-01 12:42:19,595 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139650bc0/3bbca3471ae547c684b48f992888818d [2023-09-01 12:42:19,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:42:19,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:42:19,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:42:19,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:42:19,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:42:19,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0a5fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19, skipping insertion in model container [2023-09-01 12:42:19,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:42:19,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:42:19,754 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/parallel-lamport.wvr.c[4210,4223] [2023-09-01 12:42:19,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:42:19,780 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:42:19,801 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/parallel-lamport.wvr.c[4210,4223] [2023-09-01 12:42:19,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:42:19,811 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:42:19,812 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:42:19,817 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:42:19,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19 WrapperNode [2023-09-01 12:42:19,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:42:19,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:42:19,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:42:19,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:42:19,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,863 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 243 [2023-09-01 12:42:19,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:42:19,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:42:19,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:42:19,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:42:19,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:42:19,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:42:19,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:42:19,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:42:19,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (1/1) ... [2023-09-01 12:42:19,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:42:19,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:19,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 12:42:20,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 12:42:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:42:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:42:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:42:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:42:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:42:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:42:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:42:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:42:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:42:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:42:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:42:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:42:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:42:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 12:42:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:42:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:42:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:42:20,032 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:42:20,197 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:42:20,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:42:20,534 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:42:20,635 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:42:20,635 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-09-01 12:42:20,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:42:20 BoogieIcfgContainer [2023-09-01 12:42:20,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:42:20,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:42:20,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:42:20,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:42:20,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:42:19" (1/3) ... [2023-09-01 12:42:20,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f326ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:42:20, skipping insertion in model container [2023-09-01 12:42:20,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:19" (2/3) ... [2023-09-01 12:42:20,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f326ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:42:20, skipping insertion in model container [2023-09-01 12:42:20,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:42:20" (3/3) ... [2023-09-01 12:42:20,645 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-09-01 12:42:20,652 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:42:20,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:42:20,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:42:20,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:42:20,747 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:42:20,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 180 transitions, 384 flow [2023-09-01 12:42:20,891 INFO L130 PetriNetUnfolder]: 7/177 cut-off events. [2023-09-01 12:42:20,891 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:42:20,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 7/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-09-01 12:42:20,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 180 transitions, 384 flow [2023-09-01 12:42:20,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 167 transitions, 352 flow [2023-09-01 12:42:20,906 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:42:20,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 167 transitions, 352 flow [2023-09-01 12:42:20,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 167 transitions, 352 flow [2023-09-01 12:42:20,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 167 transitions, 352 flow [2023-09-01 12:42:20,975 INFO L130 PetriNetUnfolder]: 7/167 cut-off events. [2023-09-01 12:42:20,976 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:42:20,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 7/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-09-01 12:42:20,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2023-09-01 12:42:26,496 INFO L134 LiptonReduction]: Checked pairs total: 7223 [2023-09-01 12:42:26,496 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-09-01 12:42:26,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:42:26,512 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;@5abab92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:42:26,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:42:26,526 INFO L130 PetriNetUnfolder]: 1/35 cut-off events. [2023-09-01 12:42:26,526 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:42:26,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:26,527 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, 1, 1] [2023-09-01 12:42:26,529 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)] === [2023-09-01 12:42:26,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1679152980, now seen corresponding path program 1 times [2023-09-01 12:42:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:26,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388082403] [2023-09-01 12:42:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:26,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:27,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388082403] [2023-09-01 12:42:27,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388082403] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 12:42:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136538336] [2023-09-01 12:42:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:42:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:42:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:42:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 327 [2023-09-01 12:42:27,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:27,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:27,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 327 [2023-09-01 12:42:27,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:27,336 INFO L130 PetriNetUnfolder]: 406/717 cut-off events. [2023-09-01 12:42:27,337 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-09-01 12:42:27,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 717 events. 406/717 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3277 event pairs, 405 based on Foata normal form. 0/690 useless extension candidates. Maximal degree in co-relation 1330. Up to 667 conditions per place. [2023-09-01 12:42:27,343 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-09-01 12:42:27,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 146 flow [2023-09-01 12:42:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:42:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:42:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-09-01 12:42:27,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49031600407747195 [2023-09-01 12:42:27,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-09-01 12:42:27,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-09-01 12:42:27,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:27,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-09-01 12:42:27,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:27,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:27,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:27,373 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 90 flow. Second operand 3 states and 481 transitions. [2023-09-01 12:42:27,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 146 flow [2023-09-01 12:42:27,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:42:27,379 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 90 flow [2023-09-01 12:42:27,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-09-01 12:42:27,384 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-09-01 12:42:27,385 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 90 flow [2023-09-01 12:42:27,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:27,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:27,388 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, 1, 1, 1] [2023-09-01 12:42:27,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:42:27,389 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)] === [2023-09-01 12:42:27,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1807884856, now seen corresponding path program 1 times [2023-09-01 12:42:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285396101] [2023-09-01 12:42:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:42:27,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285396101] [2023-09-01 12:42:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285396101] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:27,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:27,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:42:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950674258] [2023-09-01 12:42:27,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:27,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:27,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:42:27,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-09-01 12:42:27,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:27,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:27,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-09-01 12:42:27,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:28,081 INFO L130 PetriNetUnfolder]: 1344/2387 cut-off events. [2023-09-01 12:42:28,082 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 12:42:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2387 events. 1344/2387 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13533 event pairs, 243 based on Foata normal form. 30/2415 useless extension candidates. Maximal degree in co-relation 4672. Up to 695 conditions per place. [2023-09-01 12:42:28,115 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 102 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2023-09-01 12:42:28,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 514 flow [2023-09-01 12:42:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:42:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:42:28,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1396 transitions. [2023-09-01 12:42:28,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743459055385661 [2023-09-01 12:42:28,122 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1396 transitions. [2023-09-01 12:42:28,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1396 transitions. [2023-09-01 12:42:28,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:28,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1396 transitions. [2023-09-01 12:42:28,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.11111111111111) internal successors, (1396), 9 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,132 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,132 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 90 flow. Second operand 9 states and 1396 transitions. [2023-09-01 12:42:28,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 514 flow [2023-09-01 12:42:28,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 124 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 12:42:28,136 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 182 flow [2023-09-01 12:42:28,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-09-01 12:42:28,137 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-09-01 12:42:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 182 flow [2023-09-01 12:42:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:28,138 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, 1, 1, 1] [2023-09-01 12:42:28,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:42:28,139 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)] === [2023-09-01 12:42:28,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2091808474, now seen corresponding path program 2 times [2023-09-01 12:42:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:28,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009713600] [2023-09-01 12:42:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:42:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009713600] [2023-09-01 12:42:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009713600] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:28,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:42:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640406082] [2023-09-01 12:42:28,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:28,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:42:28,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:42:28,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:42:28,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 327 [2023-09-01 12:42:28,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:28,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 327 [2023-09-01 12:42:28,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:28,552 INFO L130 PetriNetUnfolder]: 1068/1983 cut-off events. [2023-09-01 12:42:28,552 INFO L131 PetriNetUnfolder]: For 375/375 co-relation queries the response was YES. [2023-09-01 12:42:28,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1983 events. 1068/1983 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11762 event pairs, 893 based on Foata normal form. 20/1959 useless extension candidates. Maximal degree in co-relation 4362. Up to 1600 conditions per place. [2023-09-01 12:42:28,563 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-09-01 12:42:28,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 301 flow [2023-09-01 12:42:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:42:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:42:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-09-01 12:42:28,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-09-01 12:42:28,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-09-01 12:42:28,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-09-01 12:42:28,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:28,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-09-01 12:42:28,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,570 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 182 flow. Second operand 3 states and 495 transitions. [2023-09-01 12:42:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 301 flow [2023-09-01 12:42:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 12:42:28,576 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 190 flow [2023-09-01 12:42:28,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-09-01 12:42:28,577 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2023-09-01 12:42:28,577 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 190 flow [2023-09-01 12:42:28,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:28,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:28,578 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, 1, 1, 1] [2023-09-01 12:42:28,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:42:28,578 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)] === [2023-09-01 12:42:28,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash 124098926, now seen corresponding path program 3 times [2023-09-01 12:42:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561309811] [2023-09-01 12:42:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:29,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561309811] [2023-09-01 12:42:29,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561309811] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:29,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305594123] [2023-09-01 12:42:29,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 12:42:29,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:29,137 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) [2023-09-01 12:42:29,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 12:42:29,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 12:42:29,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:42:29,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 12:42:29,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:29,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:29,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:42:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:42:29,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:42:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305594123] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:29,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:42:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-09-01 12:42:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286141613] [2023-09-01 12:42:29,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:29,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:29,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:29,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-09-01 12:42:29,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:42:29,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:29,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:29,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:42:29,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:30,572 INFO L130 PetriNetUnfolder]: 1534/2633 cut-off events. [2023-09-01 12:42:30,572 INFO L131 PetriNetUnfolder]: For 639/639 co-relation queries the response was YES. [2023-09-01 12:42:30,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 2633 events. 1534/2633 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14935 event pairs, 307 based on Foata normal form. 2/2573 useless extension candidates. Maximal degree in co-relation 6034. Up to 1421 conditions per place. [2023-09-01 12:42:30,584 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 88 selfloop transitions, 11 changer transitions 23/137 dead transitions. [2023-09-01 12:42:30,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 137 transitions, 694 flow [2023-09-01 12:42:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:42:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:42:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1359 transitions. [2023-09-01 12:42:30,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617737003058104 [2023-09-01 12:42:30,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1359 transitions. [2023-09-01 12:42:30,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1359 transitions. [2023-09-01 12:42:30,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:30,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1359 transitions. [2023-09-01 12:42:30,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.0) internal successors, (1359), 9 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:30,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:30,599 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:30,599 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 190 flow. Second operand 9 states and 1359 transitions. [2023-09-01 12:42:30,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 137 transitions, 694 flow [2023-09-01 12:42:30,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 137 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:42:30,606 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 251 flow [2023-09-01 12:42:30,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-09-01 12:42:30,607 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-09-01 12:42:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 251 flow [2023-09-01 12:42:30,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:30,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:30,608 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, 1, 1, 1] [2023-09-01 12:42:30,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 12:42:30,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:30,814 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)] === [2023-09-01 12:42:30,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1110793696, now seen corresponding path program 4 times [2023-09-01 12:42:30,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092876846] [2023-09-01 12:42:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:31,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092876846] [2023-09-01 12:42:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092876846] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41607254] [2023-09-01 12:42:31,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 12:42:31,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:31,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:31,737 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) [2023-09-01 12:42:31,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 12:42:31,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 12:42:31,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:42:31,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 12:42:31,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:31,989 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:31,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:42:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:42:31,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:42:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41607254] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:32,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:42:32,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2023-09-01 12:42:32,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308730607] [2023-09-01 12:42:32,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:32,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:32,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-09-01 12:42:32,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:42:32,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:32,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:32,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:42:32,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:32,894 INFO L130 PetriNetUnfolder]: 2114/3781 cut-off events. [2023-09-01 12:42:32,894 INFO L131 PetriNetUnfolder]: For 1863/1863 co-relation queries the response was YES. [2023-09-01 12:42:32,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9967 conditions, 3781 events. 2114/3781 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 24184 event pairs, 457 based on Foata normal form. 2/3712 useless extension candidates. Maximal degree in co-relation 9939. Up to 1577 conditions per place. [2023-09-01 12:42:32,915 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 124 selfloop transitions, 14 changer transitions 27/180 dead transitions. [2023-09-01 12:42:32,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 180 transitions, 1023 flow [2023-09-01 12:42:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:42:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:42:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1377 transitions. [2023-09-01 12:42:32,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46788990825688076 [2023-09-01 12:42:32,920 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1377 transitions. [2023-09-01 12:42:32,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1377 transitions. [2023-09-01 12:42:32,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:32,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1377 transitions. [2023-09-01 12:42:32,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:32,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:32,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:32,928 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 251 flow. Second operand 9 states and 1377 transitions. [2023-09-01 12:42:32,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 180 transitions, 1023 flow [2023-09-01 12:42:32,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 180 transitions, 1017 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 12:42:32,940 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 366 flow [2023-09-01 12:42:32,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-09-01 12:42:32,941 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2023-09-01 12:42:32,941 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 366 flow [2023-09-01 12:42:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:32,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:32,942 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, 1, 1, 1] [2023-09-01 12:42:32,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 12:42:33,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:33,146 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)] === [2023-09-01 12:42:33,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945012, now seen corresponding path program 5 times [2023-09-01 12:42:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983033450] [2023-09-01 12:42:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983033450] [2023-09-01 12:42:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983033450] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951116292] [2023-09-01 12:42:33,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 12:42:33,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:33,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:33,937 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) [2023-09-01 12:42:33,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 12:42:34,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 12:42:34,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:42:34,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 49 conjunts are in the unsatisfiable core [2023-09-01 12:42:34,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:34,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 12:42:34,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 12:42:34,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 12:42:34,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 12:42:34,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:34,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-09-01 12:42:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:34,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:42:34,941 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~f~0.offset (* c_~j~0 4))) (.cse3 (+ c_~f~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_201 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (< .cse0 0) (<= c_~n~0 .cse0) (< c_~n~0 (+ 2 (select .cse1 (+ (* (select .cse1 .cse2) 4) c_~f~0.offset)))))))) (forall ((v_ArrVal_201 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse4 (select .cse5 .cse3))) (or (< .cse4 0) (<= c_~n~0 .cse4) (< (select .cse5 (+ (* (select .cse5 .cse2) 4) c_~f~0.offset)) 1))))))) is different from false [2023-09-01 12:42:34,998 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~f~0.offset (* c_~j~0 4))) (.cse3 (+ c_~f~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (<= c_~n~0 .cse0) (< (select .cse1 (+ c_~f~0.offset (* (select .cse1 .cse2) 4))) 1) (< .cse0 0))))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse5 (select .cse4 .cse3))) (or (< c_~n~0 (+ (select .cse4 (+ c_~f~0.offset (* (select .cse4 .cse2) 4))) 2)) (<= c_~n~0 .cse5) (< .cse5 0))))))) is different from false [2023-09-01 12:42:35,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:35,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2023-09-01 12:42:35,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:35,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 1024 treesize of output 980 [2023-09-01 12:42:35,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:36,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 548 treesize of output 432 [2023-09-01 12:42:36,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:36,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 178 [2023-09-01 12:42:36,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:36,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 175 [2023-09-01 12:42:37,014 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 12:42:37,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 1 [2023-09-01 12:42:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951116292] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:42:37,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:42:37,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-09-01 12:42:37,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146454379] [2023-09-01 12:42:37,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:42:37,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 12:42:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 12:42:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=643, Unknown=2, NotChecked=110, Total=930 [2023-09-01 12:42:37,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 327 [2023-09-01 12:42:37,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 366 flow. Second operand has 31 states, 31 states have (on average 111.54838709677419) internal successors, (3458), 31 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:37,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:37,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 327 [2023-09-01 12:42:37,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:39,506 INFO L130 PetriNetUnfolder]: 4532/8165 cut-off events. [2023-09-01 12:42:39,506 INFO L131 PetriNetUnfolder]: For 8540/8541 co-relation queries the response was YES. [2023-09-01 12:42:39,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23985 conditions, 8165 events. 4532/8165 cut-off events. For 8540/8541 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 60776 event pairs, 1160 based on Foata normal form. 20/8042 useless extension candidates. Maximal degree in co-relation 23922. Up to 3163 conditions per place. [2023-09-01 12:42:39,553 INFO L137 encePairwiseOnDemand]: 317/327 looper letters, 58 selfloop transitions, 9 changer transitions 182/264 dead transitions. [2023-09-01 12:42:39,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 264 transitions, 1725 flow [2023-09-01 12:42:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 12:42:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 12:42:39,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1707 transitions. [2023-09-01 12:42:39,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372870249017038 [2023-09-01 12:42:39,561 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1707 transitions. [2023-09-01 12:42:39,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1707 transitions. [2023-09-01 12:42:39,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:39,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1707 transitions. [2023-09-01 12:42:39,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 121.92857142857143) internal successors, (1707), 14 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:39,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 327.0) internal successors, (4905), 15 states have internal predecessors, (4905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:39,574 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 327.0) internal successors, (4905), 15 states have internal predecessors, (4905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:39,574 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 366 flow. Second operand 14 states and 1707 transitions. [2023-09-01 12:42:39,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 264 transitions, 1725 flow [2023-09-01 12:42:39,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 264 transitions, 1681 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-09-01 12:42:39,641 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 459 flow [2023-09-01 12:42:39,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=459, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2023-09-01 12:42:39,643 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2023-09-01 12:42:39,643 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 459 flow [2023-09-01 12:42:39,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 111.54838709677419) internal successors, (3458), 31 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:39,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:39,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:42:39,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 12:42:39,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:39,851 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)] === [2023-09-01 12:42:39,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1199619666, now seen corresponding path program 6 times [2023-09-01 12:42:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693024604] [2023-09-01 12:42:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:39,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:42:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:40,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693024604] [2023-09-01 12:42:40,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693024604] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:40,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:40,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:42:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734624607] [2023-09-01 12:42:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:40,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:40,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:40,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:42:40,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:42:40,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 459 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:40,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:40,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:42:40,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:40,975 INFO L130 PetriNetUnfolder]: 2557/4655 cut-off events. [2023-09-01 12:42:40,976 INFO L131 PetriNetUnfolder]: For 11697/11697 co-relation queries the response was YES. [2023-09-01 12:42:40,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17569 conditions, 4655 events. 2557/4655 cut-off events. For 11697/11697 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 31664 event pairs, 664 based on Foata normal form. 2/4587 useless extension candidates. Maximal degree in co-relation 17524. Up to 2174 conditions per place. [2023-09-01 12:42:41,013 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 120 selfloop transitions, 17 changer transitions 24/176 dead transitions. [2023-09-01 12:42:41,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 176 transitions, 1313 flow [2023-09-01 12:42:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:42:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:42:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1373 transitions. [2023-09-01 12:42:41,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46653075093442065 [2023-09-01 12:42:41,018 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1373 transitions. [2023-09-01 12:42:41,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1373 transitions. [2023-09-01 12:42:41,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:41,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1373 transitions. [2023-09-01 12:42:41,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.55555555555554) internal successors, (1373), 9 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:41,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:41,026 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:41,027 INFO L175 Difference]: Start difference. First operand has 94 places, 72 transitions, 459 flow. Second operand 9 states and 1373 transitions. [2023-09-01 12:42:41,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 176 transitions, 1313 flow [2023-09-01 12:42:41,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 176 transitions, 1210 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-09-01 12:42:41,123 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 564 flow [2023-09-01 12:42:41,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=564, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2023-09-01 12:42:41,124 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2023-09-01 12:42:41,124 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 564 flow [2023-09-01 12:42:41,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:41,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:41,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:42:41,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 12:42:41,128 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)] === [2023-09-01 12:42:41,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash -675219394, now seen corresponding path program 7 times [2023-09-01 12:42:41,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:41,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758177326] [2023-09-01 12:42:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758177326] [2023-09-01 12:42:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758177326] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23756512] [2023-09-01 12:42:42,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 12:42:42,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:42,033 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) [2023-09-01 12:42:42,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 12:42:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:42,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 12:42:42,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:42,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:42,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:42:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:42:42,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:42:42,452 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-09-01 12:42:42,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-09-01 12:42:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:42:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23756512] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:42,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 12:42:42,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 19 [2023-09-01 12:42:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411737789] [2023-09-01 12:42:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:42,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-09-01 12:42:42,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:42:42,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 564 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:42,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:42,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:42:42,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:43,382 INFO L130 PetriNetUnfolder]: 2528/4620 cut-off events. [2023-09-01 12:42:43,382 INFO L131 PetriNetUnfolder]: For 12525/12525 co-relation queries the response was YES. [2023-09-01 12:42:43,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17498 conditions, 4620 events. 2528/4620 cut-off events. For 12525/12525 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 31252 event pairs, 893 based on Foata normal form. 2/4546 useless extension candidates. Maximal degree in co-relation 17452. Up to 3072 conditions per place. [2023-09-01 12:42:43,423 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 97 selfloop transitions, 22 changer transitions 27/161 dead transitions. [2023-09-01 12:42:43,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 1210 flow [2023-09-01 12:42:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:42:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:42:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1361 transitions. [2023-09-01 12:42:43,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624532789670404 [2023-09-01 12:42:43,428 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1361 transitions. [2023-09-01 12:42:43,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1361 transitions. [2023-09-01 12:42:43,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:43,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1361 transitions. [2023-09-01 12:42:43,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.22222222222223) internal successors, (1361), 9 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:43,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:43,436 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:43,436 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 564 flow. Second operand 9 states and 1361 transitions. [2023-09-01 12:42:43,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 1210 flow [2023-09-01 12:42:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 161 transitions, 1161 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-09-01 12:42:43,493 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 634 flow [2023-09-01 12:42:43,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=634, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2023-09-01 12:42:43,495 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2023-09-01 12:42:43,496 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 634 flow [2023-09-01 12:42:43,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:43,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:43,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:42:43,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 12:42:43,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:43,705 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)] === [2023-09-01 12:42:43,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1951083324, now seen corresponding path program 8 times [2023-09-01 12:42:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220441930] [2023-09-01 12:42:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:42:43,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220441930] [2023-09-01 12:42:43,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220441930] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:43,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:43,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:42:43,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914804162] [2023-09-01 12:42:43,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:43,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:43,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:43,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:43,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:42:43,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-09-01 12:42:43,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 634 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:43,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:43,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-09-01 12:42:43,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:44,952 INFO L130 PetriNetUnfolder]: 3793/7238 cut-off events. [2023-09-01 12:42:44,953 INFO L131 PetriNetUnfolder]: For 22384/22543 co-relation queries the response was YES. [2023-09-01 12:42:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26982 conditions, 7238 events. 3793/7238 cut-off events. For 22384/22543 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 53663 event pairs, 1423 based on Foata normal form. 42/7238 useless extension candidates. Maximal degree in co-relation 26936. Up to 4461 conditions per place. [2023-09-01 12:42:45,018 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 203 selfloop transitions, 18 changer transitions 10/241 dead transitions. [2023-09-01 12:42:45,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 241 transitions, 2321 flow [2023-09-01 12:42:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:42:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:42:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1689 transitions. [2023-09-01 12:42:45,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469557964970809 [2023-09-01 12:42:45,022 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1689 transitions. [2023-09-01 12:42:45,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1689 transitions. [2023-09-01 12:42:45,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:45,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1689 transitions. [2023-09-01 12:42:45,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.54545454545453) internal successors, (1689), 11 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:45,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:45,032 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:45,032 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 634 flow. Second operand 11 states and 1689 transitions. [2023-09-01 12:42:45,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 241 transitions, 2321 flow [2023-09-01 12:42:45,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 241 transitions, 2174 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-09-01 12:42:45,216 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 736 flow [2023-09-01 12:42:45,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=736, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2023-09-01 12:42:45,217 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2023-09-01 12:42:45,217 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 736 flow [2023-09-01 12:42:45,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:45,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:45,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:42:45,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 12:42:45,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:42:45,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash 174753486, now seen corresponding path program 9 times [2023-09-01 12:42:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:45,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257629096] [2023-09-01 12:42:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:45,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:46,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:46,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257629096] [2023-09-01 12:42:46,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257629096] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:46,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013952127] [2023-09-01 12:42:46,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 12:42:46,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:46,053 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) [2023-09-01 12:42:46,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 12:42:46,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 12:42:46,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:42:46,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 12:42:46,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:46,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:46,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:42:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:42:46,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:42:46,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013952127] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:46,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:42:46,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-09-01 12:42:46,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466192740] [2023-09-01 12:42:46,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:46,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:42:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:46,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:42:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-09-01 12:42:48,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 12:42:50,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 12:42:52,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 12:42:52,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 327 [2023-09-01 12:42:52,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 736 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:52,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:52,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 327 [2023-09-01 12:42:52,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:53,936 INFO L130 PetriNetUnfolder]: 4648/8535 cut-off events. [2023-09-01 12:42:53,937 INFO L131 PetriNetUnfolder]: For 27575/27591 co-relation queries the response was YES. [2023-09-01 12:42:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33519 conditions, 8535 events. 4648/8535 cut-off events. For 27575/27591 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 64893 event pairs, 1031 based on Foata normal form. 20/8468 useless extension candidates. Maximal degree in co-relation 33469. Up to 4923 conditions per place. [2023-09-01 12:42:54,008 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 156 selfloop transitions, 20 changer transitions 32/232 dead transitions. [2023-09-01 12:42:54,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 232 transitions, 1912 flow [2023-09-01 12:42:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:42:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:42:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1360 transitions. [2023-09-01 12:42:54,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621134896364254 [2023-09-01 12:42:54,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1360 transitions. [2023-09-01 12:42:54,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1360 transitions. [2023-09-01 12:42:54,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:54,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1360 transitions. [2023-09-01 12:42:54,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.11111111111111) internal successors, (1360), 9 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:54,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:54,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:54,020 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 736 flow. Second operand 9 states and 1360 transitions. [2023-09-01 12:42:54,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 232 transitions, 1912 flow [2023-09-01 12:42:54,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 232 transitions, 1908 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 12:42:54,157 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 891 flow [2023-09-01 12:42:54,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=891, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2023-09-01 12:42:54,159 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 75 predicate places. [2023-09-01 12:42:54,159 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 891 flow [2023-09-01 12:42:54,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:54,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:54,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:42:54,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 12:42:54,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 12:42:54,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:42:54,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 951031568, now seen corresponding path program 10 times [2023-09-01 12:42:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804096062] [2023-09-01 12:42:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804096062] [2023-09-01 12:42:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804096062] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:55,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096282813] [2023-09-01 12:42:55,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 12:42:55,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:55,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:55,155 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) [2023-09-01 12:42:55,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 12:42:55,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 12:42:55,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:42:55,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 12:42:55,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:55,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:55,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:42:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:42:55,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:42:55,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096282813] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:55,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:42:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-09-01 12:42:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525611250] [2023-09-01 12:42:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:55,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-09-01 12:42:55,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:42:55,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 891 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:55,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:55,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:42:55,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:56,874 INFO L130 PetriNetUnfolder]: 4831/8901 cut-off events. [2023-09-01 12:42:56,875 INFO L131 PetriNetUnfolder]: For 37081/37097 co-relation queries the response was YES. [2023-09-01 12:42:56,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37681 conditions, 8901 events. 4831/8901 cut-off events. For 37081/37097 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 68199 event pairs, 1153 based on Foata normal form. 20/8834 useless extension candidates. Maximal degree in co-relation 37626. Up to 5467 conditions per place. [2023-09-01 12:42:56,988 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 181 selfloop transitions, 23 changer transitions 21/249 dead transitions. [2023-09-01 12:42:56,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 249 transitions, 2142 flow [2023-09-01 12:42:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:42:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:42:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1530 transitions. [2023-09-01 12:42:56,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46788990825688076 [2023-09-01 12:42:56,993 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1530 transitions. [2023-09-01 12:42:56,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1530 transitions. [2023-09-01 12:42:56,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:56,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1530 transitions. [2023-09-01 12:42:56,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:57,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:57,002 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:57,003 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 891 flow. Second operand 10 states and 1530 transitions. [2023-09-01 12:42:57,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 249 transitions, 2142 flow [2023-09-01 12:42:57,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 249 transitions, 2067 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-09-01 12:42:57,257 INFO L231 Difference]: Finished difference. Result has 124 places, 111 transitions, 932 flow [2023-09-01 12:42:57,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=932, PETRI_PLACES=124, PETRI_TRANSITIONS=111} [2023-09-01 12:42:57,257 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 79 predicate places. [2023-09-01 12:42:57,258 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 111 transitions, 932 flow [2023-09-01 12:42:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:57,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:57,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:42:57,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 12:42:57,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:57,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:42:57,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash 714877538, now seen corresponding path program 11 times [2023-09-01 12:42:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827910143] [2023-09-01 12:42:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:58,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:58,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827910143] [2023-09-01 12:42:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827910143] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942824888] [2023-09-01 12:42:58,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 12:42:58,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:42:58,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:42:58,393 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) [2023-09-01 12:42:58,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 12:42:58,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 12:42:58,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:42:58,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 12:42:58,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:42:58,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:42:58,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:42:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:42:58,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:42:58,729 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-09-01 12:42:58,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-09-01 12:42:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:42:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942824888] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 12:42:58,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 12:42:58,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 19 [2023-09-01 12:42:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926260606] [2023-09-01 12:42:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:58,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-09-01 12:42:58,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:42:58,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 111 transitions, 932 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:42:58,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:58,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:42:58,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:00,071 INFO L130 PetriNetUnfolder]: 4724/8678 cut-off events. [2023-09-01 12:43:00,073 INFO L131 PetriNetUnfolder]: For 34386/34402 co-relation queries the response was YES. [2023-09-01 12:43:00,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37150 conditions, 8678 events. 4724/8678 cut-off events. For 34386/34402 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 66062 event pairs, 1181 based on Foata normal form. 20/8611 useless extension candidates. Maximal degree in co-relation 37094. Up to 5467 conditions per place. [2023-09-01 12:43:00,137 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 151 selfloop transitions, 21 changer transitions 30/226 dead transitions. [2023-09-01 12:43:00,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 226 transitions, 1964 flow [2023-09-01 12:43:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:43:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:43:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1236 transitions. [2023-09-01 12:43:00,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724770642201835 [2023-09-01 12:43:00,143 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1236 transitions. [2023-09-01 12:43:00,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1236 transitions. [2023-09-01 12:43:00,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:00,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1236 transitions. [2023-09-01 12:43:00,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.5) internal successors, (1236), 8 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:00,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:00,151 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:00,151 INFO L175 Difference]: Start difference. First operand has 124 places, 111 transitions, 932 flow. Second operand 8 states and 1236 transitions. [2023-09-01 12:43:00,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 226 transitions, 1964 flow [2023-09-01 12:43:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 226 transitions, 1901 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-09-01 12:43:00,374 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 893 flow [2023-09-01 12:43:00,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2023-09-01 12:43:00,375 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 80 predicate places. [2023-09-01 12:43:00,375 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 893 flow [2023-09-01 12:43:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:00,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:00,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:00,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 12:43:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:43:00,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:00,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 681336652, now seen corresponding path program 12 times [2023-09-01 12:43:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696405205] [2023-09-01 12:43:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:01,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696405205] [2023-09-01 12:43:01,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696405205] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:43:01,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065633755] [2023-09-01 12:43:01,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 12:43:01,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:43:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:43:01,282 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) [2023-09-01 12:43:01,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 12:43:01,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 12:43:01,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:43:01,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 12:43:01,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:43:01,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:43:01,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:43:01,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:43:01,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:43:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:01,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:43:01,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065633755] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:01,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:43:01,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-09-01 12:43:01,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856989685] [2023-09-01 12:43:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:43:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:43:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-09-01 12:43:01,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 327 [2023-09-01 12:43:01,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 893 flow. Second operand has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:01,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:01,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 327 [2023-09-01 12:43:01,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:03,095 INFO L130 PetriNetUnfolder]: 4803/8956 cut-off events. [2023-09-01 12:43:03,096 INFO L131 PetriNetUnfolder]: For 34519/34533 co-relation queries the response was YES. [2023-09-01 12:43:03,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37726 conditions, 8956 events. 4803/8956 cut-off events. For 34519/34533 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 69574 event pairs, 1251 based on Foata normal form. 18/8877 useless extension candidates. Maximal degree in co-relation 37670. Up to 4569 conditions per place. [2023-09-01 12:43:03,158 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 154 selfloop transitions, 24 changer transitions 34/236 dead transitions. [2023-09-01 12:43:03,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 236 transitions, 2077 flow [2023-09-01 12:43:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:43:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:43:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2023-09-01 12:43:03,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489296636085627 [2023-09-01 12:43:03,162 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2023-09-01 12:43:03,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2023-09-01 12:43:03,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:03,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2023-09-01 12:43:03,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.8) internal successors, (1468), 10 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:03,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:03,169 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:03,169 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 893 flow. Second operand 10 states and 1468 transitions. [2023-09-01 12:43:03,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 236 transitions, 2077 flow [2023-09-01 12:43:03,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 236 transitions, 2014 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-09-01 12:43:03,375 INFO L231 Difference]: Finished difference. Result has 129 places, 113 transitions, 976 flow [2023-09-01 12:43:03,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=976, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2023-09-01 12:43:03,377 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2023-09-01 12:43:03,377 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 976 flow [2023-09-01 12:43:03,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:03,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:03,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:03,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 12:43:03,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 12:43:03,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:03,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1805207680, now seen corresponding path program 13 times [2023-09-01 12:43:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:03,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221502038] [2023-09-01 12:43:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:04,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:04,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221502038] [2023-09-01 12:43:04,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221502038] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:43:04,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492882274] [2023-09-01 12:43:04,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 12:43:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:43:04,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:43:04,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:43:04,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 12:43:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:04,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 45 conjunts are in the unsatisfiable core [2023-09-01 12:43:04,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:43:04,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:43:04,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 12:43:05,102 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:43:05,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2023-09-01 12:43:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:05,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:43:05,255 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_540 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_540) c_~f~0.base))) (let ((.cse1 (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))))) (or (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ c_~f~0.offset (* 4 .cse1)))) (<= c_~n~0 .cse1) (< .cse1 0))))) is different from false [2023-09-01 12:43:05,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:43:05,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 162 [2023-09-01 12:43:05,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:43:05,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 62 [2023-09-01 12:43:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492882274] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:43:06,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:43:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-09-01 12:43:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612572512] [2023-09-01 12:43:06,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:43:06,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-09-01 12:43:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-09-01 12:43:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=880, Unknown=1, NotChecked=60, Total=1056 [2023-09-01 12:43:06,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 327 [2023-09-01 12:43:06,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 976 flow. Second operand has 33 states, 33 states have (on average 115.0909090909091) internal successors, (3798), 33 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:06,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:06,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 327 [2023-09-01 12:43:06,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:27,388 WARN L222 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 12:43:32,117 INFO L130 PetriNetUnfolder]: 15731/29225 cut-off events. [2023-09-01 12:43:32,117 INFO L131 PetriNetUnfolder]: For 132445/132504 co-relation queries the response was YES. [2023-09-01 12:43:32,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126132 conditions, 29225 events. 15731/29225 cut-off events. For 132445/132504 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 268618 event pairs, 4647 based on Foata normal form. 59/29004 useless extension candidates. Maximal degree in co-relation 125593. Up to 8007 conditions per place. [2023-09-01 12:43:32,328 INFO L137 encePairwiseOnDemand]: 307/327 looper letters, 517 selfloop transitions, 127 changer transitions 65/733 dead transitions. [2023-09-01 12:43:32,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 733 transitions, 6839 flow [2023-09-01 12:43:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 12:43:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 12:43:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4120 transitions. [2023-09-01 12:43:32,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817996478546937 [2023-09-01 12:43:32,337 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4120 transitions. [2023-09-01 12:43:32,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4120 transitions. [2023-09-01 12:43:32,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:32,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4120 transitions. [2023-09-01 12:43:32,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 124.84848484848484) internal successors, (4120), 33 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:32,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 327.0) internal successors, (11118), 34 states have internal predecessors, (11118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:32,362 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 327.0) internal successors, (11118), 34 states have internal predecessors, (11118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:32,362 INFO L175 Difference]: Start difference. First operand has 129 places, 113 transitions, 976 flow. Second operand 33 states and 4120 transitions. [2023-09-01 12:43:32,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 733 transitions, 6839 flow [2023-09-01 12:43:34,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 733 transitions, 6544 flow, removed 109 selfloop flow, removed 6 redundant places. [2023-09-01 12:43:34,020 INFO L231 Difference]: Finished difference. Result has 167 places, 229 transitions, 2623 flow [2023-09-01 12:43:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2623, PETRI_PLACES=167, PETRI_TRANSITIONS=229} [2023-09-01 12:43:34,020 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 122 predicate places. [2023-09-01 12:43:34,021 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 229 transitions, 2623 flow [2023-09-01 12:43:34,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 115.0909090909091) internal successors, (3798), 33 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:34,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:34,022 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:34,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 12:43:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 12:43:34,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:34,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash -758409070, now seen corresponding path program 14 times [2023-09-01 12:43:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:34,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103163277] [2023-09-01 12:43:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103163277] [2023-09-01 12:43:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103163277] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:43:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121966790] [2023-09-01 12:43:34,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 12:43:34,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:43:34,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:43:34,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:43:34,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 12:43:35,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 12:43:35,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:43:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 12:43:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:43:35,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:43:35,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:43:35,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:43:35,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:43:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:35,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:43:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121966790] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:35,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:43:35,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-09-01 12:43:35,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735178263] [2023-09-01 12:43:35,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:43:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:43:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-09-01 12:43:35,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 327 [2023-09-01 12:43:35,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 229 transitions, 2623 flow. Second operand has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:35,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:35,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 327 [2023-09-01 12:43:35,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:39,754 INFO L130 PetriNetUnfolder]: 15637/29045 cut-off events. [2023-09-01 12:43:39,754 INFO L131 PetriNetUnfolder]: For 190171/190654 co-relation queries the response was YES. [2023-09-01 12:43:40,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154838 conditions, 29045 events. 15637/29045 cut-off events. For 190171/190654 co-relation queries the response was YES. Maximal size of possible extension queue 1330. Compared 267317 event pairs, 3948 based on Foata normal form. 67/28817 useless extension candidates. Maximal degree in co-relation 154017. Up to 16281 conditions per place. [2023-09-01 12:43:40,100 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 180 selfloop transitions, 83 changer transitions 72/359 dead transitions. [2023-09-01 12:43:40,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 359 transitions, 4348 flow [2023-09-01 12:43:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:43:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:43:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1332 transitions. [2023-09-01 12:43:40,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525993883792049 [2023-09-01 12:43:40,104 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1332 transitions. [2023-09-01 12:43:40,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1332 transitions. [2023-09-01 12:43:40,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:40,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1332 transitions. [2023-09-01 12:43:40,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:40,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:40,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:40,109 INFO L175 Difference]: Start difference. First operand has 167 places, 229 transitions, 2623 flow. Second operand 9 states and 1332 transitions. [2023-09-01 12:43:40,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 359 transitions, 4348 flow [2023-09-01 12:43:42,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 359 transitions, 4100 flow, removed 103 selfloop flow, removed 11 redundant places. [2023-09-01 12:43:42,583 INFO L231 Difference]: Finished difference. Result has 163 places, 206 transitions, 2395 flow [2023-09-01 12:43:42,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=163, PETRI_TRANSITIONS=206} [2023-09-01 12:43:42,584 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2023-09-01 12:43:42,584 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 206 transitions, 2395 flow [2023-09-01 12:43:42,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:42,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:42,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:42,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 12:43:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 12:43:42,785 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:42,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1002688088, now seen corresponding path program 15 times [2023-09-01 12:43:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591422998] [2023-09-01 12:43:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591422998] [2023-09-01 12:43:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591422998] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:42,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:42,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:43:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562769306] [2023-09-01 12:43:42,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:43:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:43:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:43:42,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-09-01 12:43:42,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 206 transitions, 2395 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:42,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:42,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-09-01 12:43:42,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:46,644 INFO L130 PetriNetUnfolder]: 14640/28454 cut-off events. [2023-09-01 12:43:46,644 INFO L131 PetriNetUnfolder]: For 205946/206339 co-relation queries the response was YES. [2023-09-01 12:43:46,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148308 conditions, 28454 events. 14640/28454 cut-off events. For 205946/206339 co-relation queries the response was YES. Maximal size of possible extension queue 1193. Compared 267585 event pairs, 6523 based on Foata normal form. 180/28504 useless extension candidates. Maximal degree in co-relation 148258. Up to 18930 conditions per place. [2023-09-01 12:43:47,014 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 386 selfloop transitions, 22 changer transitions 23/448 dead transitions. [2023-09-01 12:43:47,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 448 transitions, 6378 flow [2023-09-01 12:43:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:43:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:43:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1386 transitions. [2023-09-01 12:43:47,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709480122324159 [2023-09-01 12:43:47,018 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1386 transitions. [2023-09-01 12:43:47,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1386 transitions. [2023-09-01 12:43:47,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:47,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1386 transitions. [2023-09-01 12:43:47,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:47,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:47,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:47,023 INFO L175 Difference]: Start difference. First operand has 163 places, 206 transitions, 2395 flow. Second operand 9 states and 1386 transitions. [2023-09-01 12:43:47,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 448 transitions, 6378 flow [2023-09-01 12:43:48,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 448 transitions, 5866 flow, removed 38 selfloop flow, removed 9 redundant places. [2023-09-01 12:43:48,932 INFO L231 Difference]: Finished difference. Result has 157 places, 213 transitions, 2336 flow [2023-09-01 12:43:48,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2336, PETRI_PLACES=157, PETRI_TRANSITIONS=213} [2023-09-01 12:43:48,932 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 112 predicate places. [2023-09-01 12:43:48,932 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 213 transitions, 2336 flow [2023-09-01 12:43:48,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:48,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:48,933 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:48,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 12:43:48,933 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:48,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:48,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1013248804, now seen corresponding path program 16 times [2023-09-01 12:43:48,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:48,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586681569] [2023-09-01 12:43:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:48,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:49,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586681569] [2023-09-01 12:43:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586681569] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:49,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:49,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:43:49,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191132888] [2023-09-01 12:43:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:49,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:43:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:43:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:43:49,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-09-01 12:43:49,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 213 transitions, 2336 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:49,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:49,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-09-01 12:43:49,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:51,961 INFO L130 PetriNetUnfolder]: 11127/21780 cut-off events. [2023-09-01 12:43:51,961 INFO L131 PetriNetUnfolder]: For 129046/129316 co-relation queries the response was YES. [2023-09-01 12:43:52,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106889 conditions, 21780 events. 11127/21780 cut-off events. For 129046/129316 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 199692 event pairs, 5183 based on Foata normal form. 167/21856 useless extension candidates. Maximal degree in co-relation 106836. Up to 18362 conditions per place. [2023-09-01 12:43:52,094 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 253 selfloop transitions, 21 changer transitions 51/342 dead transitions. [2023-09-01 12:43:52,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 342 transitions, 4061 flow [2023-09-01 12:43:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:43:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:43:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1676 transitions. [2023-09-01 12:43:52,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46594384209063106 [2023-09-01 12:43:52,096 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1676 transitions. [2023-09-01 12:43:52,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1676 transitions. [2023-09-01 12:43:52,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:52,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1676 transitions. [2023-09-01 12:43:52,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 152.36363636363637) internal successors, (1676), 11 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:52,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:52,103 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:52,104 INFO L175 Difference]: Start difference. First operand has 157 places, 213 transitions, 2336 flow. Second operand 11 states and 1676 transitions. [2023-09-01 12:43:52,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 342 transitions, 4061 flow [2023-09-01 12:43:53,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 342 transitions, 4041 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-09-01 12:43:53,095 INFO L231 Difference]: Finished difference. Result has 166 places, 209 transitions, 2315 flow [2023-09-01 12:43:53,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2315, PETRI_PLACES=166, PETRI_TRANSITIONS=209} [2023-09-01 12:43:53,096 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2023-09-01 12:43:53,096 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 209 transitions, 2315 flow [2023-09-01 12:43:53,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:53,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:53,096 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:53,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 12:43:53,097 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:53,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 969016280, now seen corresponding path program 17 times [2023-09-01 12:43:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381956159] [2023-09-01 12:43:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:53,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:53,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381956159] [2023-09-01 12:43:53,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381956159] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:53,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:53,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:43:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205927886] [2023-09-01 12:43:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:43:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:43:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:43:53,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-09-01 12:43:53,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 209 transitions, 2315 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:53,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:53,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-09-01 12:43:53,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:55,626 INFO L130 PetriNetUnfolder]: 8526/17395 cut-off events. [2023-09-01 12:43:55,627 INFO L131 PetriNetUnfolder]: For 104772/104917 co-relation queries the response was YES. [2023-09-01 12:43:55,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83191 conditions, 17395 events. 8526/17395 cut-off events. For 104772/104917 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 160326 event pairs, 1937 based on Foata normal form. 144/17494 useless extension candidates. Maximal degree in co-relation 83138. Up to 7545 conditions per place. [2023-09-01 12:43:55,775 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 322 selfloop transitions, 49 changer transitions 42/430 dead transitions. [2023-09-01 12:43:55,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 430 transitions, 5761 flow [2023-09-01 12:43:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:43:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:43:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1387 transitions. [2023-09-01 12:43:55,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712878015630309 [2023-09-01 12:43:55,779 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1387 transitions. [2023-09-01 12:43:55,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1387 transitions. [2023-09-01 12:43:55,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:55,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1387 transitions. [2023-09-01 12:43:55,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.11111111111111) internal successors, (1387), 9 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:55,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:55,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:55,785 INFO L175 Difference]: Start difference. First operand has 166 places, 209 transitions, 2315 flow. Second operand 9 states and 1387 transitions. [2023-09-01 12:43:55,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 430 transitions, 5761 flow [2023-09-01 12:43:56,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 430 transitions, 5693 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-09-01 12:43:56,393 INFO L231 Difference]: Finished difference. Result has 166 places, 211 transitions, 2417 flow [2023-09-01 12:43:56,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2417, PETRI_PLACES=166, PETRI_TRANSITIONS=211} [2023-09-01 12:43:56,394 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2023-09-01 12:43:56,394 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 211 transitions, 2417 flow [2023-09-01 12:43:56,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:56,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:56,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 12:43:56,395 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:56,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 393224320, now seen corresponding path program 18 times [2023-09-01 12:43:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707073396] [2023-09-01 12:43:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:56,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:56,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707073396] [2023-09-01 12:43:56,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707073396] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:56,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:56,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:43:56,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037372875] [2023-09-01 12:43:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:56,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:43:56,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:43:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:43:56,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-09-01 12:43:56,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 211 transitions, 2417 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:56,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:56,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-09-01 12:43:56,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:58,177 INFO L130 PetriNetUnfolder]: 5527/11173 cut-off events. [2023-09-01 12:43:58,178 INFO L131 PetriNetUnfolder]: For 66579/66670 co-relation queries the response was YES. [2023-09-01 12:43:58,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52671 conditions, 11173 events. 5527/11173 cut-off events. For 66579/66670 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 98932 event pairs, 2398 based on Foata normal form. 170/11301 useless extension candidates. Maximal degree in co-relation 52616. Up to 7664 conditions per place. [2023-09-01 12:43:58,243 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 166 selfloop transitions, 22 changer transitions 84/285 dead transitions. [2023-09-01 12:43:58,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 285 transitions, 3235 flow [2023-09-01 12:43:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:43:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:43:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1388 transitions. [2023-09-01 12:43:58,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716275908936459 [2023-09-01 12:43:58,247 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1388 transitions. [2023-09-01 12:43:58,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1388 transitions. [2023-09-01 12:43:58,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:58,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1388 transitions. [2023-09-01 12:43:58,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.22222222222223) internal successors, (1388), 9 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:58,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:58,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:58,252 INFO L175 Difference]: Start difference. First operand has 166 places, 211 transitions, 2417 flow. Second operand 9 states and 1388 transitions. [2023-09-01 12:43:58,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 285 transitions, 3235 flow [2023-09-01 12:43:58,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 285 transitions, 3039 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-09-01 12:43:58,681 INFO L231 Difference]: Finished difference. Result has 164 places, 126 transitions, 1183 flow [2023-09-01 12:43:58,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1183, PETRI_PLACES=164, PETRI_TRANSITIONS=126} [2023-09-01 12:43:58,681 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 119 predicate places. [2023-09-01 12:43:58,681 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 126 transitions, 1183 flow [2023-09-01 12:43:58,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:58,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:58,682 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:43:58,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 12:43:58,682 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:43:58,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1101595256, now seen corresponding path program 19 times [2023-09-01 12:43:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993754696] [2023-09-01 12:43:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:43:58,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993754696] [2023-09-01 12:43:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993754696] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:58,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:58,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:43:58,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928212494] [2023-09-01 12:43:58,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:43:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:43:58,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:43:58,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:43:58,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 126 transitions, 1183 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:43:58,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:58,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:43:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:59,997 INFO L130 PetriNetUnfolder]: 3168/6503 cut-off events. [2023-09-01 12:43:59,997 INFO L131 PetriNetUnfolder]: For 26686/27139 co-relation queries the response was YES. [2023-09-01 12:44:00,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28773 conditions, 6503 events. 3168/6503 cut-off events. For 26686/27139 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 55556 event pairs, 1559 based on Foata normal form. 23/6280 useless extension candidates. Maximal degree in co-relation 28723. Up to 3876 conditions per place. [2023-09-01 12:44:00,045 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 125 selfloop transitions, 17 changer transitions 16/188 dead transitions. [2023-09-01 12:44:00,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 188 transitions, 1876 flow [2023-09-01 12:44:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:44:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:44:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1349 transitions. [2023-09-01 12:44:00,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583758069996602 [2023-09-01 12:44:00,048 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1349 transitions. [2023-09-01 12:44:00,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1349 transitions. [2023-09-01 12:44:00,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:00,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1349 transitions. [2023-09-01 12:44:00,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.88888888888889) internal successors, (1349), 9 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:00,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:00,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:00,053 INFO L175 Difference]: Start difference. First operand has 164 places, 126 transitions, 1183 flow. Second operand 9 states and 1349 transitions. [2023-09-01 12:44:00,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 188 transitions, 1876 flow [2023-09-01 12:44:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 188 transitions, 1783 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-09-01 12:44:00,200 INFO L231 Difference]: Finished difference. Result has 152 places, 130 transitions, 1195 flow [2023-09-01 12:44:00,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1195, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2023-09-01 12:44:00,201 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 107 predicate places. [2023-09-01 12:44:00,201 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 1195 flow [2023-09-01 12:44:00,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:00,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:00,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 12:44:00,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:00,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1727604590, now seen corresponding path program 20 times [2023-09-01 12:44:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138615843] [2023-09-01 12:44:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:00,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138615843] [2023-09-01 12:44:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138615843] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84607154] [2023-09-01 12:44:00,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 12:44:00,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:00,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:00,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 12:44:01,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 12:44:01,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 12:44:01,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:01,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:01,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:01,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:01,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84607154] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:01,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:01,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-09-01 12:44:01,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001550152] [2023-09-01 12:44:01,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:01,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:44:01,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:01,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:44:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-09-01 12:44:01,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:44:01,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 1195 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:01,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:01,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:44:01,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:02,331 INFO L130 PetriNetUnfolder]: 3234/6707 cut-off events. [2023-09-01 12:44:02,331 INFO L131 PetriNetUnfolder]: For 26136/26589 co-relation queries the response was YES. [2023-09-01 12:44:02,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30041 conditions, 6707 events. 3234/6707 cut-off events. For 26136/26589 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 57627 event pairs, 1619 based on Foata normal form. 23/6484 useless extension candidates. Maximal degree in co-relation 29995. Up to 4092 conditions per place. [2023-09-01 12:44:02,361 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 141 selfloop transitions, 20 changer transitions 11/202 dead transitions. [2023-09-01 12:44:02,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 202 transitions, 1967 flow [2023-09-01 12:44:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:44:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:44:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1503 transitions. [2023-09-01 12:44:02,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596330275229358 [2023-09-01 12:44:02,364 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1503 transitions. [2023-09-01 12:44:02,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1503 transitions. [2023-09-01 12:44:02,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:02,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1503 transitions. [2023-09-01 12:44:02,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 150.3) internal successors, (1503), 10 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:02,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:02,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:02,369 INFO L175 Difference]: Start difference. First operand has 152 places, 130 transitions, 1195 flow. Second operand 10 states and 1503 transitions. [2023-09-01 12:44:02,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 202 transitions, 1967 flow [2023-09-01 12:44:02,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 202 transitions, 1912 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-09-01 12:44:02,430 INFO L231 Difference]: Finished difference. Result has 156 places, 133 transitions, 1227 flow [2023-09-01 12:44:02,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1227, PETRI_PLACES=156, PETRI_TRANSITIONS=133} [2023-09-01 12:44:02,430 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2023-09-01 12:44:02,430 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 133 transitions, 1227 flow [2023-09-01 12:44:02,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:02,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:02,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:02,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 12:44:02,631 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:02,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash -261863682, now seen corresponding path program 21 times [2023-09-01 12:44:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081322718] [2023-09-01 12:44:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:03,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081322718] [2023-09-01 12:44:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081322718] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192922767] [2023-09-01 12:44:03,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 12:44:03,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:03,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:03,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:03,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 12:44:03,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 12:44:03,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:03,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 12:44:03,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:03,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:03,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:03,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192922767] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-09-01 12:44:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298238041] [2023-09-01 12:44:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:03,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:44:03,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:44:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-09-01 12:44:03,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 327 [2023-09-01 12:44:03,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 133 transitions, 1227 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:03,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:03,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 327 [2023-09-01 12:44:03,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:04,410 INFO L130 PetriNetUnfolder]: 3210/6599 cut-off events. [2023-09-01 12:44:04,411 INFO L131 PetriNetUnfolder]: For 26008/26461 co-relation queries the response was YES. [2023-09-01 12:44:04,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30015 conditions, 6599 events. 3210/6599 cut-off events. For 26008/26461 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 56223 event pairs, 1637 based on Foata normal form. 23/6376 useless extension candidates. Maximal degree in co-relation 29968. Up to 4092 conditions per place. [2023-09-01 12:44:04,447 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 115 selfloop transitions, 18 changer transitions 26/189 dead transitions. [2023-09-01 12:44:04,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 189 transitions, 1878 flow [2023-09-01 12:44:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:44:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:44:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1211 transitions. [2023-09-01 12:44:04,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4629204892966361 [2023-09-01 12:44:04,449 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1211 transitions. [2023-09-01 12:44:04,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1211 transitions. [2023-09-01 12:44:04,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:04,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1211 transitions. [2023-09-01 12:44:04,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 151.375) internal successors, (1211), 8 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:04,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:04,453 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:04,453 INFO L175 Difference]: Start difference. First operand has 156 places, 133 transitions, 1227 flow. Second operand 8 states and 1211 transitions. [2023-09-01 12:44:04,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 189 transitions, 1878 flow [2023-09-01 12:44:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 189 transitions, 1827 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-09-01 12:44:04,543 INFO L231 Difference]: Finished difference. Result has 157 places, 131 transitions, 1207 flow [2023-09-01 12:44:04,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1207, PETRI_PLACES=157, PETRI_TRANSITIONS=131} [2023-09-01 12:44:04,543 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 112 predicate places. [2023-09-01 12:44:04,543 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 131 transitions, 1207 flow [2023-09-01 12:44:04,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:04,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:04,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:04,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:04,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 12:44:04,750 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:04,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash -537786768, now seen corresponding path program 22 times [2023-09-01 12:44:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432556347] [2023-09-01 12:44:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:04,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:05,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432556347] [2023-09-01 12:44:05,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432556347] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363994350] [2023-09-01 12:44:05,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 12:44:05,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:05,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:05,597 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:05,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 12:44:05,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 12:44:05,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:05,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 12:44:05,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:05,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:05,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:05,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:05,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:05,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:05,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363994350] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:05,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:05,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-09-01 12:44:05,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76699928] [2023-09-01 12:44:05,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:05,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:44:05,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:44:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-09-01 12:44:06,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 327 [2023-09-01 12:44:06,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 131 transitions, 1207 flow. Second operand has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:06,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:06,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 327 [2023-09-01 12:44:06,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:06,966 INFO L130 PetriNetUnfolder]: 3012/6335 cut-off events. [2023-09-01 12:44:06,966 INFO L131 PetriNetUnfolder]: For 24426/24879 co-relation queries the response was YES. [2023-09-01 12:44:06,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28614 conditions, 6335 events. 3012/6335 cut-off events. For 24426/24879 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 54432 event pairs, 1664 based on Foata normal form. 23/6112 useless extension candidates. Maximal degree in co-relation 28567. Up to 3803 conditions per place. [2023-09-01 12:44:07,004 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 100 selfloop transitions, 17 changer transitions 27/174 dead transitions. [2023-09-01 12:44:07,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 174 transitions, 1754 flow [2023-09-01 12:44:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:44:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:44:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1157 transitions. [2023-09-01 12:44:07,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422782874617737 [2023-09-01 12:44:07,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1157 transitions. [2023-09-01 12:44:07,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1157 transitions. [2023-09-01 12:44:07,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:07,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1157 transitions. [2023-09-01 12:44:07,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:07,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:07,010 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:07,010 INFO L175 Difference]: Start difference. First operand has 157 places, 131 transitions, 1207 flow. Second operand 8 states and 1157 transitions. [2023-09-01 12:44:07,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 174 transitions, 1754 flow [2023-09-01 12:44:07,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 1699 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-09-01 12:44:07,092 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1219 flow [2023-09-01 12:44:07,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1219, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2023-09-01 12:44:07,092 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2023-09-01 12:44:07,092 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1219 flow [2023-09-01 12:44:07,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:07,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:07,093 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:07,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-09-01 12:44:07,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 12:44:07,293 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:07,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash -709821156, now seen corresponding path program 23 times [2023-09-01 12:44:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:07,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635845460] [2023-09-01 12:44:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:08,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635845460] [2023-09-01 12:44:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635845460] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002901873] [2023-09-01 12:44:08,064 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 12:44:08,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:08,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:08,066 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:08,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 12:44:08,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 12:44:08,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:08,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 12:44:08,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:08,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:08,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:08,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:08,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:08,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002901873] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-09-01 12:44:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521321415] [2023-09-01 12:44:08,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:44:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:44:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-09-01 12:44:08,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 327 [2023-09-01 12:44:08,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:08,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:08,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 327 [2023-09-01 12:44:08,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:09,439 INFO L130 PetriNetUnfolder]: 2868/6029 cut-off events. [2023-09-01 12:44:09,439 INFO L131 PetriNetUnfolder]: For 23142/23595 co-relation queries the response was YES. [2023-09-01 12:44:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27287 conditions, 6029 events. 2868/6029 cut-off events. For 23142/23595 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 51604 event pairs, 1664 based on Foata normal form. 23/5806 useless extension candidates. Maximal degree in co-relation 27239. Up to 3602 conditions per place. [2023-09-01 12:44:09,474 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 96 selfloop transitions, 16 changer transitions 22/164 dead transitions. [2023-09-01 12:44:09,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 164 transitions, 1677 flow [2023-09-01 12:44:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:44:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:44:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1283 transitions. [2023-09-01 12:44:09,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435949711179069 [2023-09-01 12:44:09,476 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1283 transitions. [2023-09-01 12:44:09,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1283 transitions. [2023-09-01 12:44:09,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:09,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1283 transitions. [2023-09-01 12:44:09,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.55555555555554) internal successors, (1283), 9 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:09,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:09,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:09,479 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1219 flow. Second operand 9 states and 1283 transitions. [2023-09-01 12:44:09,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 164 transitions, 1677 flow [2023-09-01 12:44:09,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 164 transitions, 1625 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-09-01 12:44:09,552 INFO L231 Difference]: Finished difference. Result has 157 places, 130 transitions, 1199 flow [2023-09-01 12:44:09,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1199, PETRI_PLACES=157, PETRI_TRANSITIONS=130} [2023-09-01 12:44:09,553 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 112 predicate places. [2023-09-01 12:44:09,553 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 130 transitions, 1199 flow [2023-09-01 12:44:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:09,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:09,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:09,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:09,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:09,757 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:09,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -355322796, now seen corresponding path program 24 times [2023-09-01 12:44:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:09,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784049290] [2023-09-01 12:44:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784049290] [2023-09-01 12:44:11,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784049290] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503791027] [2023-09-01 12:44:11,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 12:44:11,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:11,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:11,099 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:11,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 12:44:11,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 12:44:11,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:11,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 12:44:11,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:11,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:11,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:11,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:11,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:11,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503791027] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:11,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:11,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2023-09-01 12:44:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381971704] [2023-09-01 12:44:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:44:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:44:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2023-09-01 12:44:11,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 327 [2023-09-01 12:44:11,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 130 transitions, 1199 flow. Second operand has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:11,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:11,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 327 [2023-09-01 12:44:11,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:12,571 INFO L130 PetriNetUnfolder]: 2844/5921 cut-off events. [2023-09-01 12:44:12,571 INFO L131 PetriNetUnfolder]: For 22098/22551 co-relation queries the response was YES. [2023-09-01 12:44:12,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26452 conditions, 5921 events. 2844/5921 cut-off events. For 22098/22551 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 50679 event pairs, 1640 based on Foata normal form. 23/5698 useless extension candidates. Maximal degree in co-relation 26405. Up to 3683 conditions per place. [2023-09-01 12:44:12,605 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 77 selfloop transitions, 9 changer transitions 50/160 dead transitions. [2023-09-01 12:44:12,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 160 transitions, 1611 flow [2023-09-01 12:44:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:44:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:44:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1282 transitions. [2023-09-01 12:44:12,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435609921848454 [2023-09-01 12:44:12,607 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1282 transitions. [2023-09-01 12:44:12,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1282 transitions. [2023-09-01 12:44:12,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:12,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1282 transitions. [2023-09-01 12:44:12,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.44444444444446) internal successors, (1282), 9 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:12,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:12,611 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:12,611 INFO L175 Difference]: Start difference. First operand has 157 places, 130 transitions, 1199 flow. Second operand 9 states and 1282 transitions. [2023-09-01 12:44:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 160 transitions, 1611 flow [2023-09-01 12:44:12,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 160 transitions, 1552 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 12:44:12,686 INFO L231 Difference]: Finished difference. Result has 155 places, 108 transitions, 981 flow [2023-09-01 12:44:12,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=981, PETRI_PLACES=155, PETRI_TRANSITIONS=108} [2023-09-01 12:44:12,686 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 110 predicate places. [2023-09-01 12:44:12,686 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 108 transitions, 981 flow [2023-09-01 12:44:12,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.8) internal successors, (1378), 10 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:12,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:12,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:12,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:12,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:12,887 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:12,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -751429968, now seen corresponding path program 25 times [2023-09-01 12:44:12,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:12,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852415008] [2023-09-01 12:44:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:12,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852415008] [2023-09-01 12:44:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852415008] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452424994] [2023-09-01 12:44:13,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 12:44:13,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:13,543 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:13,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 12:44:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:13,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 12:44:13,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:13,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:13,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:13,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:13,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:13,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:13,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 12:44:13,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:44:16,043 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1002 (Array Int Int)) (v_ArrVal_1001 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1001) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1002) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2023-09-01 12:44:16,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:16,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 176 [2023-09-01 12:44:16,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:16,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 106 [2023-09-01 12:44:16,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:16,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 73 [2023-09-01 12:44:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:16,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452424994] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:16,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 12:44:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 10] total 28 [2023-09-01 12:44:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937630042] [2023-09-01 12:44:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:44:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:44:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=718, Unknown=3, NotChecked=54, Total=870 [2023-09-01 12:44:16,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-09-01 12:44:16,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 108 transitions, 981 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:16,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:16,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-09-01 12:44:16,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:19,611 INFO L130 PetriNetUnfolder]: 2435/5135 cut-off events. [2023-09-01 12:44:19,611 INFO L131 PetriNetUnfolder]: For 20307/20676 co-relation queries the response was YES. [2023-09-01 12:44:19,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23114 conditions, 5135 events. 2435/5135 cut-off events. For 20307/20676 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 42306 event pairs, 750 based on Foata normal form. 9/4955 useless extension candidates. Maximal degree in co-relation 23070. Up to 2698 conditions per place. [2023-09-01 12:44:19,641 INFO L137 encePairwiseOnDemand]: 311/327 looper letters, 81 selfloop transitions, 41 changer transitions 29/175 dead transitions. [2023-09-01 12:44:19,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 1699 flow [2023-09-01 12:44:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:44:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:44:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1551 transitions. [2023-09-01 12:44:19,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952599388379205 [2023-09-01 12:44:19,644 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1551 transitions. [2023-09-01 12:44:19,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1551 transitions. [2023-09-01 12:44:19,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:19,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1551 transitions. [2023-09-01 12:44:19,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:19,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 327.0) internal successors, (4251), 13 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:19,650 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 327.0) internal successors, (4251), 13 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:19,650 INFO L175 Difference]: Start difference. First operand has 155 places, 108 transitions, 981 flow. Second operand 12 states and 1551 transitions. [2023-09-01 12:44:19,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 175 transitions, 1699 flow [2023-09-01 12:44:19,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 175 transitions, 1539 flow, removed 11 selfloop flow, removed 19 redundant places. [2023-09-01 12:44:19,724 INFO L231 Difference]: Finished difference. Result has 136 places, 123 transitions, 1112 flow [2023-09-01 12:44:19,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1112, PETRI_PLACES=136, PETRI_TRANSITIONS=123} [2023-09-01 12:44:19,725 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2023-09-01 12:44:19,725 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 123 transitions, 1112 flow [2023-09-01 12:44:19,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:19,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:19,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:19,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:19,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 12:44:19,926 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:19,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash -54748380, now seen corresponding path program 26 times [2023-09-01 12:44:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:19,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981460778] [2023-09-01 12:44:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:20,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981460778] [2023-09-01 12:44:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981460778] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:20,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526965865] [2023-09-01 12:44:20,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 12:44:20,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:20,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:20,681 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:20,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 12:44:20,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 12:44:20,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 12:44:20,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:20,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:20,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:21,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:21,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:21,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:21,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:21,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526965865] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:21,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:21,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2023-09-01 12:44:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37173253] [2023-09-01 12:44:21,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:21,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:44:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:44:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-09-01 12:44:21,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 327 [2023-09-01 12:44:21,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 123 transitions, 1112 flow. Second operand has 11 states, 11 states have (on average 135.54545454545453) internal successors, (1491), 11 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:21,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:21,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 327 [2023-09-01 12:44:21,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:22,241 INFO L130 PetriNetUnfolder]: 2207/4839 cut-off events. [2023-09-01 12:44:22,241 INFO L131 PetriNetUnfolder]: For 24664/25704 co-relation queries the response was YES. [2023-09-01 12:44:22,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24457 conditions, 4839 events. 2207/4839 cut-off events. For 24664/25704 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 41098 event pairs, 668 based on Foata normal form. 23/4673 useless extension candidates. Maximal degree in co-relation 24418. Up to 2539 conditions per place. [2023-09-01 12:44:22,266 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 65 selfloop transitions, 20 changer transitions 77/173 dead transitions. [2023-09-01 12:44:22,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 173 transitions, 1738 flow [2023-09-01 12:44:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:44:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:44:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1406 transitions. [2023-09-01 12:44:22,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42996941896024465 [2023-09-01 12:44:22,269 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1406 transitions. [2023-09-01 12:44:22,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1406 transitions. [2023-09-01 12:44:22,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:22,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1406 transitions. [2023-09-01 12:44:22,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.6) internal successors, (1406), 10 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:22,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:22,273 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:22,273 INFO L175 Difference]: Start difference. First operand has 136 places, 123 transitions, 1112 flow. Second operand 10 states and 1406 transitions. [2023-09-01 12:44:22,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 173 transitions, 1738 flow [2023-09-01 12:44:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 173 transitions, 1654 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-09-01 12:44:22,366 INFO L231 Difference]: Finished difference. Result has 138 places, 73 transitions, 585 flow [2023-09-01 12:44:22,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=585, PETRI_PLACES=138, PETRI_TRANSITIONS=73} [2023-09-01 12:44:22,367 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2023-09-01 12:44:22,367 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 73 transitions, 585 flow [2023-09-01 12:44:22,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.54545454545453) internal successors, (1491), 11 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:22,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:22,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2023-09-01 12:44:22,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:22,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-09-01 12:44:22,568 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:44:22,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash -966869784, now seen corresponding path program 27 times [2023-09-01 12:44:22,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:22,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317215588] [2023-09-01 12:44:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:23,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:23,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317215588] [2023-09-01 12:44:23,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317215588] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:44:23,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998856326] [2023-09-01 12:44:23,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 12:44:23,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:44:23,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:44:23,707 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:44:23,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 12:44:23,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 12:44:23,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:44:23,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 12:44:23,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:44:23,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:23,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:24,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:44:24,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 12:44:24,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:44:24,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-09-01 12:44:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:44:24,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 12:44:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998856326] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:24,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 12:44:24,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-09-01 12:44:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6065620] [2023-09-01 12:44:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:44:24,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:44:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-09-01 12:44:24,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 327 [2023-09-01 12:44:24,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 73 transitions, 585 flow. Second operand has 11 states, 11 states have (on average 135.54545454545453) internal successors, (1491), 11 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:24,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:24,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 327 [2023-09-01 12:44:24,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:24,745 INFO L130 PetriNetUnfolder]: 564/1185 cut-off events. [2023-09-01 12:44:24,745 INFO L131 PetriNetUnfolder]: For 8192/8516 co-relation queries the response was YES. [2023-09-01 12:44:24,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5915 conditions, 1185 events. 564/1185 cut-off events. For 8192/8516 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6563 event pairs, 154 based on Foata normal form. 6/1137 useless extension candidates. Maximal degree in co-relation 5877. Up to 506 conditions per place. [2023-09-01 12:44:24,750 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2023-09-01 12:44:24,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 99 transitions, 920 flow [2023-09-01 12:44:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:44:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:44:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1117 transitions. [2023-09-01 12:44:24,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42698776758409784 [2023-09-01 12:44:24,751 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1117 transitions. [2023-09-01 12:44:24,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1117 transitions. [2023-09-01 12:44:24,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:24,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1117 transitions. [2023-09-01 12:44:24,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:24,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:24,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:24,755 INFO L175 Difference]: Start difference. First operand has 138 places, 73 transitions, 585 flow. Second operand 8 states and 1117 transitions. [2023-09-01 12:44:24,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 99 transitions, 920 flow [2023-09-01 12:44:24,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 99 transitions, 727 flow, removed 30 selfloop flow, removed 30 redundant places. [2023-09-01 12:44:24,765 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2023-09-01 12:44:24,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2023-09-01 12:44:24,766 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2023-09-01 12:44:24,766 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2023-09-01 12:44:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.54545454545453) internal successors, (1491), 11 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:44:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 12:44:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 12:44:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 12:44:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 12:44:24,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 12:44:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-09-01 12:44:24,975 INFO L445 BasicCegarLoop]: Path program histogram: [27, 1] [2023-09-01 12:44:24,977 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 12:44:24,977 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 12:44:24,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:44:24 BasicIcfg [2023-09-01 12:44:24,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 12:44:24,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 12:44:24,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 12:44:24,980 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 12:44:24,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:42:20" (3/4) ... [2023-09-01 12:44:24,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 12:44:24,987 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 12:44:24,987 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 12:44:24,987 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 12:44:24,994 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-09-01 12:44:24,994 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 12:44:24,995 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 12:44:24,995 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 12:44:25,026 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 12:44:25,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 12:44:25,027 INFO L158 Benchmark]: Toolchain (without parser) took 125428.71ms. Allocated memory was 69.2MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 46.8MB in the beginning and 3.8GB in the end (delta: -3.8GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. [2023-09-01 12:44:25,028 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:44:25,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.20ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 34.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 12:44:25,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.83ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 31.8MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 12:44:25,028 INFO L158 Benchmark]: Boogie Preprocessor took 53.12ms. Allocated memory is still 69.2MB. Free memory was 31.8MB in the beginning and 30.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:44:25,029 INFO L158 Benchmark]: RCFGBuilder took 715.86ms. Allocated memory is still 69.2MB. Free memory was 30.1MB in the beginning and 42.4MB in the end (delta: -12.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-09-01 12:44:25,029 INFO L158 Benchmark]: TraceAbstraction took 124340.32ms. Allocated memory was 69.2MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 41.8MB in the beginning and 3.8GB in the end (delta: -3.8GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. [2023-09-01 12:44:25,029 INFO L158 Benchmark]: Witness Printer took 47.08ms. Allocated memory is still 9.5GB. Free memory was 3.8GB in the beginning and 3.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 12:44:25,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.20ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 34.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.83ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 31.8MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.12ms. Allocated memory is still 69.2MB. Free memory was 31.8MB in the beginning and 30.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 715.86ms. Allocated memory is still 69.2MB. Free memory was 30.1MB in the beginning and 42.4MB in the end (delta: -12.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 124340.32ms. Allocated memory was 69.2MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 41.8MB in the beginning and 3.8GB in the end (delta: -3.8GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. * Witness Printer took 47.08ms. Allocated memory is still 9.5GB. Free memory was 3.8GB in the beginning and 3.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 170 PlacesBefore, 45 PlacesAfterwards, 167 TransitionsBefore, 36 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 0 ConcurrentYvCompositions, 6 ChoiceCompositions, 147 TotalNumberOfCompositions, 7223 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3209, independent: 2894, independent conditional: 0, independent unconditional: 2894, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 654, independent: 631, independent conditional: 0, independent unconditional: 631, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3209, independent: 2263, independent conditional: 0, independent unconditional: 2263, dependent: 292, dependent conditional: 0, dependent unconditional: 292, unknown: 654, unknown conditional: 0, unknown unconditional: 654] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 172, Positive conditional cache size: 0, Positive unconditional cache size: 172, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 161]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 209 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 124.2s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 84.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 5380 SdHoareTripleChecker+Valid, 17.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4785 mSDsluCounter, 2531 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 905 IncrementalHoareTripleChecker+Unchecked, 2395 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17992 IncrementalHoareTripleChecker+Invalid, 19078 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 136 mSDtfsCounter, 17992 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 699 SyntacticMatches, 8 SemanticMatches, 540 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 33.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2623occurred in iteration=14, InterpolantAutomatonStates: 276, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 26.6s InterpolantComputationTime, 1692 NumberOfCodeBlocks, 1660 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1825 ConstructedInterpolants, 83 QuantifiedInterpolants, 25629 SizeOfPredicates, 223 NumberOfNonLiveVariables, 4887 ConjunctsInSsa, 434 ConjunctsInUnsatCore, 51 InterpolantComputations, 26 PerfectInterpolantSequences, 70/132 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 12:44:25,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE