./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 03:38:27,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 03:38:27,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 03:38:27,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 03:38:27,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 03:38:27,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 03:38:28,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 03:38:28,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 03:38:28,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 03:38:28,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 03:38:28,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 03:38:28,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 03:38:28,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 03:38:28,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 03:38:28,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 03:38:28,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 03:38:28,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 03:38:28,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 03:38:28,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 03:38:28,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 03:38:28,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 03:38:28,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 03:38:28,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 03:38:28,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 03:38:28,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 03:38:28,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 03:38:28,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 03:38:28,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 03:38:28,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 03:38:28,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 03:38:28,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 03:38:28,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 03:38:28,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 03:38:28,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 03:38:28,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 03:38:28,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 03:38:28,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 03:38:28,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 03:38:28,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 03:38:28,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 03:38:28,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 03:38:28,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 03:38:28,085 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 03:38:28,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 03:38:28,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 03:38:28,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 03:38:28,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 03:38:28,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 03:38:28,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 03:38:28,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 03:38:28,088 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 03:38:28,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 03:38:28,089 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 03:38:28,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 03:38:28,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 03:38:28,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 03:38:28,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 03:38:28,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 03:38:28,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 03:38:28,090 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 03:38:28,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 03:38:28,091 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 03:38:28,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 03:38:28,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 03:38:28,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 03:38:28,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 03:38:28,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:38:28,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 03:38:28,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 03:38:28,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 03:38:28,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 03:38:28,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 03:38:28,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 03:38:28,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 03:38:28,093 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 03:38:28,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 03:38:28,094 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 03:38:28,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 03:38:28,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 03:38:28,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 03:38:28,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 03:38:28,427 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 03:38:28,428 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 03:38:28,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-31 03:38:29,557 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 03:38:29,766 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 03:38:29,766 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-31 03:38:29,771 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe1f66d2/6592006fdc324178bb1b6a20580383d7/FLAGa80e2af90 [2023-08-31 03:38:29,784 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe1f66d2/6592006fdc324178bb1b6a20580383d7 [2023-08-31 03:38:29,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 03:38:29,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 03:38:29,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 03:38:29,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 03:38:29,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 03:38:29,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:38:29" (1/1) ... [2023-08-31 03:38:29,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a40669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:29, skipping insertion in model container [2023-08-31 03:38:29,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:38:29" (1/1) ... [2023-08-31 03:38:29,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 03:38:29,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 03:38:29,972 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2023-08-31 03:38:29,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:38:29,988 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 03:38:30,011 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2023-08-31 03:38:30,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:38:30,022 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:38:30,022 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:38:30,028 INFO L208 MainTranslator]: Completed translation [2023-08-31 03:38:30,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30 WrapperNode [2023-08-31 03:38:30,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 03:38:30,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 03:38:30,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 03:38:30,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 03:38:30,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,098 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 274 [2023-08-31 03:38:30,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 03:38:30,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 03:38:30,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 03:38:30,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 03:38:30,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 03:38:30,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 03:38:30,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 03:38:30,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 03:38:30,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (1/1) ... [2023-08-31 03:38:30,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:38:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:38:30,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 03:38:30,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 03:38:30,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 03:38:30,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 03:38:30,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 03:38:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 03:38:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 03:38:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 03:38:30,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 03:38:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 03:38:30,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 03:38:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 03:38:30,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-31 03:38:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-31 03:38:30,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 03:38:30,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 03:38:30,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 03:38:30,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 03:38:30,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 03:38:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 03:38:30,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 03:38:30,257 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 03:38:30,424 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 03:38:30,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 03:38:30,850 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 03:38:30,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 03:38:30,942 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-31 03:38:30,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:38:30 BoogieIcfgContainer [2023-08-31 03:38:30,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 03:38:30,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 03:38:30,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 03:38:30,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 03:38:30,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 03:38:29" (1/3) ... [2023-08-31 03:38:30,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c4c1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:38:30, skipping insertion in model container [2023-08-31 03:38:30,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:38:30" (2/3) ... [2023-08-31 03:38:30,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c4c1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:38:30, skipping insertion in model container [2023-08-31 03:38:30,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:38:30" (3/3) ... [2023-08-31 03:38:30,952 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-08-31 03:38:30,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 03:38:30,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 03:38:30,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 03:38:30,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 03:38:31,045 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 03:38:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 227 transitions, 486 flow [2023-08-31 03:38:31,208 INFO L130 PetriNetUnfolder]: 18/223 cut-off events. [2023-08-31 03:38:31,209 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 03:38:31,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 223 events. 18/223 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 127 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2023-08-31 03:38:31,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 227 transitions, 486 flow [2023-08-31 03:38:31,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 211 transitions, 446 flow [2023-08-31 03:38:31,229 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 03:38:31,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 211 transitions, 446 flow [2023-08-31 03:38:31,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 211 transitions, 446 flow [2023-08-31 03:38:31,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 211 transitions, 446 flow [2023-08-31 03:38:31,313 INFO L130 PetriNetUnfolder]: 18/211 cut-off events. [2023-08-31 03:38:31,314 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 03:38:31,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 211 events. 18/211 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2023-08-31 03:38:31,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 2284 [2023-08-31 03:38:39,459 INFO L134 LiptonReduction]: Checked pairs total: 4694 [2023-08-31 03:38:39,459 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-31 03:38:39,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 03:38:39,476 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;@804a56a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 03:38:39,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-31 03:38:39,483 INFO L130 PetriNetUnfolder]: 5/35 cut-off events. [2023-08-31 03:38:39,483 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 03:38:39,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:39,484 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] [2023-08-31 03:38:39,485 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 2 more)] === [2023-08-31 03:38:39,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -685861163, now seen corresponding path program 1 times [2023-08-31 03:38:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:39,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528662907] [2023-08-31 03:38:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:39,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:38:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528662907] [2023-08-31 03:38:40,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528662907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:40,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:40,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 03:38:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385468582] [2023-08-31 03:38:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:38:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:38:40,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:38:40,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 438 [2023-08-31 03:38:40,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:40,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:40,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 438 [2023-08-31 03:38:40,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:40,475 INFO L130 PetriNetUnfolder]: 1835/2622 cut-off events. [2023-08-31 03:38:40,476 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2023-08-31 03:38:40,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 2622 events. 1835/2622 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11831 event pairs, 180 based on Foata normal form. 0/2183 useless extension candidates. Maximal degree in co-relation 4539. Up to 845 conditions per place. [2023-08-31 03:38:40,491 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 76 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2023-08-31 03:38:40,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 373 flow [2023-08-31 03:38:40,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:38:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:38:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1063 transitions. [2023-08-31 03:38:40,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853881278538813 [2023-08-31 03:38:40,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1063 transitions. [2023-08-31 03:38:40,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1063 transitions. [2023-08-31 03:38:40,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:40,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1063 transitions. [2023-08-31 03:38:40,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:40,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:40,527 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:40,528 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 96 flow. Second operand 5 states and 1063 transitions. [2023-08-31 03:38:40,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 373 flow [2023-08-31 03:38:40,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 83 transitions, 340 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-31 03:38:40,536 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 108 flow [2023-08-31 03:38:40,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-31 03:38:40,541 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-08-31 03:38:40,541 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 108 flow [2023-08-31 03:38:40,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:40,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:40,542 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] [2023-08-31 03:38:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 03:38:40,543 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 2 more)] === [2023-08-31 03:38:40,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 528431825, now seen corresponding path program 2 times [2023-08-31 03:38:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940726080] [2023-08-31 03:38:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:38:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940726080] [2023-08-31 03:38:40,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940726080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:40,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:40,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 03:38:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589103746] [2023-08-31 03:38:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:38:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:38:40,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:38:40,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 438 [2023-08-31 03:38:40,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:40,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:40,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 438 [2023-08-31 03:38:40,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:41,060 INFO L130 PetriNetUnfolder]: 1949/2762 cut-off events. [2023-08-31 03:38:41,060 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-08-31 03:38:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6091 conditions, 2762 events. 1949/2762 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 12734 event pairs, 198 based on Foata normal form. 0/2393 useless extension candidates. Maximal degree in co-relation 3849. Up to 1095 conditions per place. [2023-08-31 03:38:41,080 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 65 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-08-31 03:38:41,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 346 flow [2023-08-31 03:38:41,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:38:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:38:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1052 transitions. [2023-08-31 03:38:41,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480365296803653 [2023-08-31 03:38:41,084 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1052 transitions. [2023-08-31 03:38:41,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1052 transitions. [2023-08-31 03:38:41,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:41,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1052 transitions. [2023-08-31 03:38:41,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.4) internal successors, (1052), 5 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:41,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:41,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:41,094 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 108 flow. Second operand 5 states and 1052 transitions. [2023-08-31 03:38:41,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 346 flow [2023-08-31 03:38:41,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 03:38:41,098 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 149 flow [2023-08-31 03:38:41,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-31 03:38:41,099 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-31 03:38:41,099 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 149 flow [2023-08-31 03:38:41,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:41,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:41,100 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] [2023-08-31 03:38:41,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 03:38:41,101 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 2 more)] === [2023-08-31 03:38:41,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1985387241, now seen corresponding path program 3 times [2023-08-31 03:38:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591003788] [2023-08-31 03:38:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:38:41,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:41,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591003788] [2023-08-31 03:38:41,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591003788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:41,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:41,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 03:38:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532467474] [2023-08-31 03:38:41,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:41,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 03:38:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 03:38:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 03:38:41,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 438 [2023-08-31 03:38:41,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 196.16666666666666) internal successors, (1177), 6 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:41,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:41,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 438 [2023-08-31 03:38:41,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:42,183 INFO L130 PetriNetUnfolder]: 4931/6722 cut-off events. [2023-08-31 03:38:42,184 INFO L131 PetriNetUnfolder]: For 3310/3310 co-relation queries the response was YES. [2023-08-31 03:38:42,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 6722 events. 4931/6722 cut-off events. For 3310/3310 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 32310 event pairs, 338 based on Foata normal form. 164/6161 useless extension candidates. Maximal degree in co-relation 8964. Up to 2244 conditions per place. [2023-08-31 03:38:42,215 INFO L137 encePairwiseOnDemand]: 431/438 looper letters, 86 selfloop transitions, 7 changer transitions 21/115 dead transitions. [2023-08-31 03:38:42,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 115 transitions, 600 flow [2023-08-31 03:38:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 03:38:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 03:38:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1447 transitions. [2023-08-31 03:38:42,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719504240052185 [2023-08-31 03:38:42,220 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1447 transitions. [2023-08-31 03:38:42,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1447 transitions. [2023-08-31 03:38:42,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:42,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1447 transitions. [2023-08-31 03:38:42,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.71428571428572) internal successors, (1447), 7 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,231 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 149 flow. Second operand 7 states and 1447 transitions. [2023-08-31 03:38:42,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 115 transitions, 600 flow [2023-08-31 03:38:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 115 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 03:38:42,270 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 156 flow [2023-08-31 03:38:42,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-08-31 03:38:42,271 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-08-31 03:38:42,271 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 156 flow [2023-08-31 03:38:42,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.16666666666666) internal successors, (1177), 6 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:42,273 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] [2023-08-31 03:38:42,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 03:38:42,273 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 2 more)] === [2023-08-31 03:38:42,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash 529060162, now seen corresponding path program 1 times [2023-08-31 03:38:42,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:42,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783810080] [2023-08-31 03:38:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:38:42,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783810080] [2023-08-31 03:38:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783810080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:42,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 03:38:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807276966] [2023-08-31 03:38:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 03:38:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 03:38:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 03:38:42,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 438 [2023-08-31 03:38:42,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:42,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 438 [2023-08-31 03:38:42,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:42,729 INFO L130 PetriNetUnfolder]: 1897/2812 cut-off events. [2023-08-31 03:38:42,733 INFO L131 PetriNetUnfolder]: For 3281/3281 co-relation queries the response was YES. [2023-08-31 03:38:42,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7253 conditions, 2812 events. 1897/2812 cut-off events. For 3281/3281 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12993 event pairs, 492 based on Foata normal form. 54/2554 useless extension candidates. Maximal degree in co-relation 2968. Up to 2139 conditions per place. [2023-08-31 03:38:42,754 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 45 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-31 03:38:42,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 272 flow [2023-08-31 03:38:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 03:38:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 03:38:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2023-08-31 03:38:42,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832572298325723 [2023-08-31 03:38:42,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2023-08-31 03:38:42,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2023-08-31 03:38:42,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:42,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2023-08-31 03:38:42,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,793 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 156 flow. Second operand 3 states and 635 transitions. [2023-08-31 03:38:42,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 272 flow [2023-08-31 03:38:42,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 244 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-08-31 03:38:42,802 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 130 flow [2023-08-31 03:38:42,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-31 03:38:42,803 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-31 03:38:42,804 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 130 flow [2023-08-31 03:38:42,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:42,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:42,805 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] [2023-08-31 03:38:42,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 03:38:42,806 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 2 more)] === [2023-08-31 03:38:42,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1604329013, now seen corresponding path program 1 times [2023-08-31 03:38:42,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:42,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990987965] [2023-08-31 03:38:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:42,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:38:42,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:42,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990987965] [2023-08-31 03:38:42,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990987965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:42,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:42,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 03:38:42,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794460686] [2023-08-31 03:38:42,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:38:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:38:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:38:43,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 438 [2023-08-31 03:38:43,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:43,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 438 [2023-08-31 03:38:43,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:43,411 INFO L130 PetriNetUnfolder]: 2162/3195 cut-off events. [2023-08-31 03:38:43,412 INFO L131 PetriNetUnfolder]: For 1894/1894 co-relation queries the response was YES. [2023-08-31 03:38:43,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 3195 events. 2162/3195 cut-off events. For 1894/1894 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15056 event pairs, 1534 based on Foata normal form. 44/2841 useless extension candidates. Maximal degree in co-relation 3779. Up to 2560 conditions per place. [2023-08-31 03:38:43,441 INFO L137 encePairwiseOnDemand]: 434/438 looper letters, 34 selfloop transitions, 2 changer transitions 17/58 dead transitions. [2023-08-31 03:38:43,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 281 flow [2023-08-31 03:38:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 03:38:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 03:38:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 820 transitions. [2023-08-31 03:38:43,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680365296803653 [2023-08-31 03:38:43,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 820 transitions. [2023-08-31 03:38:43,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 820 transitions. [2023-08-31 03:38:43,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:43,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 820 transitions. [2023-08-31 03:38:43,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,453 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 130 flow. Second operand 4 states and 820 transitions. [2023-08-31 03:38:43,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 281 flow [2023-08-31 03:38:43,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 03:38:43,460 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 142 flow [2023-08-31 03:38:43,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-08-31 03:38:43,463 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-08-31 03:38:43,463 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 142 flow [2023-08-31 03:38:43,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:43,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:38:43,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 03:38:43,465 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 2 more)] === [2023-08-31 03:38:43,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash 716362356, now seen corresponding path program 1 times [2023-08-31 03:38:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:43,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065465527] [2023-08-31 03:38:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:38:43,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:43,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065465527] [2023-08-31 03:38:43,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065465527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:43,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:43,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 03:38:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962578155] [2023-08-31 03:38:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:43,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 03:38:43,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 03:38:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 03:38:43,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 438 [2023-08-31 03:38:43,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:43,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 438 [2023-08-31 03:38:43,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:43,955 INFO L130 PetriNetUnfolder]: 1464/2239 cut-off events. [2023-08-31 03:38:43,956 INFO L131 PetriNetUnfolder]: For 1464/1464 co-relation queries the response was YES. [2023-08-31 03:38:43,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5761 conditions, 2239 events. 1464/2239 cut-off events. For 1464/1464 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9852 event pairs, 683 based on Foata normal form. 34/2073 useless extension candidates. Maximal degree in co-relation 5738. Up to 1902 conditions per place. [2023-08-31 03:38:43,969 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 45 selfloop transitions, 2 changer transitions 3/55 dead transitions. [2023-08-31 03:38:43,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 278 flow [2023-08-31 03:38:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 03:38:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 03:38:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-08-31 03:38:43,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2023-08-31 03:38:43,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-08-31 03:38:43,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-08-31 03:38:43,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:43,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-08-31 03:38:43,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,977 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 142 flow. Second operand 3 states and 642 transitions. [2023-08-31 03:38:43,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 278 flow [2023-08-31 03:38:43,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 03:38:43,983 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 148 flow [2023-08-31 03:38:43,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-31 03:38:43,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-08-31 03:38:43,986 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 148 flow [2023-08-31 03:38:43,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:43,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:43,988 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] [2023-08-31 03:38:43,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 03:38:43,989 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 2 more)] === [2023-08-31 03:38:43,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:43,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2092257775, now seen corresponding path program 1 times [2023-08-31 03:38:43,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:43,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989644269] [2023-08-31 03:38:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:38:44,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989644269] [2023-08-31 03:38:44,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989644269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:38:44,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:38:44,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 03:38:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832211136] [2023-08-31 03:38:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:38:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:38:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:38:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:38:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:38:44,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 438 [2023-08-31 03:38:44,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:44,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:38:44,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 438 [2023-08-31 03:38:44,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:38:44,491 INFO L130 PetriNetUnfolder]: 1572/2450 cut-off events. [2023-08-31 03:38:44,491 INFO L131 PetriNetUnfolder]: For 1768/1768 co-relation queries the response was YES. [2023-08-31 03:38:44,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6582 conditions, 2450 events. 1572/2450 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10885 event pairs, 1205 based on Foata normal form. 22/2270 useless extension candidates. Maximal degree in co-relation 6152. Up to 2077 conditions per place. [2023-08-31 03:38:44,504 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 36 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2023-08-31 03:38:44,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 313 flow [2023-08-31 03:38:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:38:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:38:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1013 transitions. [2023-08-31 03:38:44,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625570776255708 [2023-08-31 03:38:44,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1013 transitions. [2023-08-31 03:38:44,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1013 transitions. [2023-08-31 03:38:44,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:38:44,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1013 transitions. [2023-08-31 03:38:44,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:44,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:44,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:44,515 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 148 flow. Second operand 5 states and 1013 transitions. [2023-08-31 03:38:44,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 313 flow [2023-08-31 03:38:44,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 03:38:44,519 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 162 flow [2023-08-31 03:38:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-08-31 03:38:44,520 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2023-08-31 03:38:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 162 flow [2023-08-31 03:38:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:38:44,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:38:44,521 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] [2023-08-31 03:38:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 03:38:44,521 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 2 more)] === [2023-08-31 03:38:44,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:38:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash -645640744, now seen corresponding path program 1 times [2023-08-31 03:38:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:38:44,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264854679] [2023-08-31 03:38:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:38:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:38:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:38:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264854679] [2023-08-31 03:38:46,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264854679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:38:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932544891] [2023-08-31 03:38:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:38:46,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:38:46,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:38:46,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:38:46,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 03:38:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:38:46,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-31 03:38:46,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:38:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:38:47,401 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 [2023-08-31 03:38:47,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:38:47,528 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 [2023-08-31 03:38:47,879 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:38:47,880 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-08-31 03:38:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:38:48,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:38:48,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:38:48,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1987 treesize of output 1799 [2023-08-31 03:38:48,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:38:48,941 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 418 treesize of output 350 [2023-08-31 03:38:48,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:38:48,984 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 317 treesize of output 303 [2023-08-31 03:39:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:39:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932544891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:39:06,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:39:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 45 [2023-08-31 03:39:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352852061] [2023-08-31 03:39:06,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:39:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-08-31 03:39:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:39:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-08-31 03:39:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1881, Unknown=5, NotChecked=0, Total=2070 [2023-08-31 03:39:08,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 438 [2023-08-31 03:39:08,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 162 flow. Second operand has 46 states, 46 states have (on average 118.0) internal successors, (5428), 46 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:39:08,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:39:08,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 438 [2023-08-31 03:39:08,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:39:18,629 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:39:25,515 WARN L222 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 126 DAG size of output: 78 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:39:35,024 WARN L222 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 117 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:39:47,793 WARN L222 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 91 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:39:55,346 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 63 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:40:10,879 WARN L222 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 115 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:40:20,338 WARN L222 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 106 DAG size of output: 78 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:40:27,397 WARN L222 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 128 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:40:51,187 WARN L222 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 70 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:41:03,859 WARN L222 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 119 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:41:34,217 WARN L222 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 85 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:41:51,870 WARN L222 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 93 DAG size of output: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:42:01,341 WARN L222 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 66 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:42:13,568 WARN L222 SmtUtils]: Spent 10.40s on a formula simplification. DAG size of input: 117 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:42:20,718 WARN L222 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 82 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:42:31,393 WARN L222 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 106 DAG size of output: 78 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:42:37,979 WARN L222 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 97 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:42:44,845 WARN L222 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 87 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:43:04,341 WARN L222 SmtUtils]: Spent 15.29s on a formula simplification. DAG size of input: 108 DAG size of output: 78 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:43:11,154 WARN L222 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 99 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:43:33,275 WARN L222 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 84 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:43:44,697 WARN L222 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 68 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:43:58,793 WARN L222 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 101 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:44:27,338 INFO L130 PetriNetUnfolder]: 27131/38695 cut-off events. [2023-08-31 03:44:27,338 INFO L131 PetriNetUnfolder]: For 29688/29688 co-relation queries the response was YES. [2023-08-31 03:44:27,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108152 conditions, 38695 events. 27131/38695 cut-off events. For 29688/29688 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 233938 event pairs, 528 based on Foata normal form. 759/36964 useless extension candidates. Maximal degree in co-relation 108129. Up to 6272 conditions per place. [2023-08-31 03:44:27,582 INFO L137 encePairwiseOnDemand]: 414/438 looper letters, 1687 selfloop transitions, 962 changer transitions 311/2960 dead transitions. [2023-08-31 03:44:27,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2960 transitions, 15310 flow [2023-08-31 03:44:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-08-31 03:44:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2023-08-31 03:44:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 37587 transitions. [2023-08-31 03:44:27,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2870069180372933 [2023-08-31 03:44:27,676 INFO L72 ComplementDD]: Start complementDD. Operand 299 states and 37587 transitions. [2023-08-31 03:44:27,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 37587 transitions. [2023-08-31 03:44:27,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:44:27,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 299 states and 37587 transitions. [2023-08-31 03:44:27,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 300 states, 299 states have (on average 125.70903010033445) internal successors, (37587), 299 states have internal predecessors, (37587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:27,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 300 states, 300 states have (on average 438.0) internal successors, (131400), 300 states have internal predecessors, (131400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:27,958 INFO L81 ComplementDD]: Finished complementDD. Result has 300 states, 300 states have (on average 438.0) internal successors, (131400), 300 states have internal predecessors, (131400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:27,959 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 162 flow. Second operand 299 states and 37587 transitions. [2023-08-31 03:44:27,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2960 transitions, 15310 flow [2023-08-31 03:44:28,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 2960 transitions, 15290 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-31 03:44:28,049 INFO L231 Difference]: Finished difference. Result has 447 places, 1223 transitions, 7686 flow [2023-08-31 03:44:28,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=299, PETRI_FLOW=7686, PETRI_PLACES=447, PETRI_TRANSITIONS=1223} [2023-08-31 03:44:28,052 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2023-08-31 03:44:28,052 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1223 transitions, 7686 flow [2023-08-31 03:44:28,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 118.0) internal successors, (5428), 46 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:28,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:44:28,054 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] [2023-08-31 03:44:28,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 03:44:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:44:28,261 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 2 more)] === [2023-08-31 03:44:28,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:44:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1127794134, now seen corresponding path program 2 times [2023-08-31 03:44:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:44:28,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809022803] [2023-08-31 03:44:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:44:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:44:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:44:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:44:30,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:44:30,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809022803] [2023-08-31 03:44:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809022803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:44:30,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993772059] [2023-08-31 03:44:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:44:30,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:44:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:44:30,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:44:30,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 03:44:30,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:44:30,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:44:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 61 conjunts are in the unsatisfiable core [2023-08-31 03:44:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:44:30,914 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 [2023-08-31 03:44:31,033 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 [2023-08-31 03:44:31,113 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 [2023-08-31 03:44:31,195 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 [2023-08-31 03:44:31,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:44:31,671 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-31 03:44:31,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2023-08-31 03:44:31,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-31 03:44:31,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-31 03:44:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:44:31,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:44:33,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:33,314 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 134 treesize of output 98 [2023-08-31 03:44:33,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:33,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2229 treesize of output 2177 [2023-08-31 03:44:33,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:33,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2085 treesize of output 1733 [2023-08-31 03:44:33,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:33,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1653 treesize of output 1517 [2023-08-31 03:44:33,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:33,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1298 treesize of output 1270 [2023-08-31 03:44:33,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 230 Killed by 15