./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/pthread/triangular-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:16:02,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:16:02,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:16:02,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:16:02,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:16:02,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:16:02,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:16:02,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:16:02,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:16:02,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:16:02,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:16:02,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:16:02,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:16:02,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:16:02,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:16:02,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:16:02,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:16:02,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:16:02,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:16:02,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:16:02,112 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:16:02,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:16:02,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:16:02,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:16:02,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:16:02,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:16:02,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:16:02,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:16:02,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:16:02,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:16:02,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:16:02,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:16:02,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:16:02,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:16:02,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:16:02,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:16:02,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:16:02,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:16:02,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:16:02,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:16:02,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:16:02,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:16:02,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:16:02,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:16:02,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:16:02,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:16:02,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:16:02,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:16:02,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:16:02,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:16:02,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:16:02,151 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:16:02,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:16:02,151 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:16:02,152 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:16:02,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:16:02,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:16:02,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:16:02,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:16:02,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:16:02,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:16:02,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:16:02,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:16:02,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:16:02,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:16:02,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:16:02,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:16:02,154 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:16:02,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:16:02,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:16:02,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2022-07-22 21:16:02,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:16:02,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:16:02,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:16:02,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:16:02,324 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:16:02,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-2.i [2022-07-22 21:16:02,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2f3ea85/d3b0925882474d1691f29655970de5c1/FLAGb7d0c51f6 [2022-07-22 21:16:02,797 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:16:02,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i [2022-07-22 21:16:02,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2f3ea85/d3b0925882474d1691f29655970de5c1/FLAGb7d0c51f6 [2022-07-22 21:16:02,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2f3ea85/d3b0925882474d1691f29655970de5c1 [2022-07-22 21:16:02,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:16:02,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:16:02,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:16:02,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:16:02,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:16:02,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:16:02" (1/1) ... [2022-07-22 21:16:02,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cd342e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:02, skipping insertion in model container [2022-07-22 21:16:02,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:16:02" (1/1) ... [2022-07-22 21:16:02,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:16:02,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:16:03,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-07-22 21:16:03,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:16:03,117 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:16:03,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-07-22 21:16:03,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:16:03,189 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:16:03,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03 WrapperNode [2022-07-22 21:16:03,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:16:03,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:16:03,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:16:03,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:16:03,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,231 INFO L137 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-07-22 21:16:03,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:16:03,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:16:03,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:16:03,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:16:03,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:16:03,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:16:03,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:16:03,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:16:03,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (1/1) ... [2022-07-22 21:16:03,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:16:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:03,292 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) [2022-07-22 21:16:03,308 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 [2022-07-22 21:16:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-07-22 21:16:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-07-22 21:16:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-07-22 21:16:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-07-22 21:16:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:16:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:16:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:16:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:16:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:16:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:16:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:16:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:16:03,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:16:03,330 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:16:03,424 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:16:03,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:16:03,528 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:16:03,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:16:03,532 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:16:03,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:03 BoogieIcfgContainer [2022-07-22 21:16:03,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:16:03,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:16:03,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:16:03,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:16:03,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:16:02" (1/3) ... [2022-07-22 21:16:03,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a1050f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:16:03, skipping insertion in model container [2022-07-22 21:16:03,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:03" (2/3) ... [2022-07-22 21:16:03,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a1050f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:16:03, skipping insertion in model container [2022-07-22 21:16:03,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:03" (3/3) ... [2022-07-22 21:16:03,540 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2022-07-22 21:16:03,546 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:16:03,553 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:16:03,554 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:16:03,554 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:16:03,613 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:16:03,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-07-22 21:16:03,675 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2022-07-22 21:16:03,680 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:16:03,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-07-22 21:16:03,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-07-22 21:16:03,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-07-22 21:16:03,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:16:03,714 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47a2b324, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c22d9 [2022-07-22 21:16:03,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:16:03,739 INFO L129 PetriNetUnfolder]: 4/58 cut-off events. [2022-07-22 21:16:03,739 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:16:03,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:03,740 INFO L200 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] [2022-07-22 21:16:03,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-07-22 21:16:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:03,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059698312] [2022-07-22 21:16:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:03,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:04,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059698312] [2022-07-22 21:16:04,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059698312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:04,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:04,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:16:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215560751] [2022-07-22 21:16:04,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:04,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:16:04,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:04,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:16:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:16:04,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:04,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:04,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:04,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:04,253 INFO L129 PetriNetUnfolder]: 42/203 cut-off events. [2022-07-22 21:16:04,253 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:16:04,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 203 events. 42/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 761 event pairs, 3 based on Foata normal form. 45/231 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-07-22 21:16:04,256 INFO L132 encePairwiseOnDemand]: 59/70 looper letters, 22 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2022-07-22 21:16:04,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 271 flow [2022-07-22 21:16:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:16:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:16:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2022-07-22 21:16:04,271 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8757142857142857 [2022-07-22 21:16:04,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2022-07-22 21:16:04,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2022-07-22 21:16:04,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:04,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2022-07-22 21:16:04,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,291 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,293 INFO L186 Difference]: Start difference. First operand has 70 places, 68 transitions, 142 flow. Second operand 10 states and 613 transitions. [2022-07-22 21:16:04,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 271 flow [2022-07-22 21:16:04,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:16:04,297 INFO L242 Difference]: Finished difference. Result has 85 places, 85 transitions, 276 flow [2022-07-22 21:16:04,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2022-07-22 21:16:04,301 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2022-07-22 21:16:04,301 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 276 flow [2022-07-22 21:16:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:04,306 INFO L200 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, 1, 1, 1] [2022-07-22 21:16:04,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:16:04,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 245149124, now seen corresponding path program 1 times [2022-07-22 21:16:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710044869] [2022-07-22 21:16:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:04,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:04,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710044869] [2022-07-22 21:16:04,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710044869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:04,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:04,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:16:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558080801] [2022-07-22 21:16:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:04,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:16:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:16:04,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:16:04,430 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:04,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:04,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:04,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:04,581 INFO L129 PetriNetUnfolder]: 46/218 cut-off events. [2022-07-22 21:16:04,582 INFO L130 PetriNetUnfolder]: For 115/120 co-relation queries the response was YES. [2022-07-22 21:16:04,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 218 events. 46/218 cut-off events. For 115/120 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 854 event pairs, 0 based on Foata normal form. 3/206 useless extension candidates. Maximal degree in co-relation 377. Up to 35 conditions per place. [2022-07-22 21:16:04,587 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 16 selfloop transitions, 9 changer transitions 40/110 dead transitions. [2022-07-22 21:16:04,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 508 flow [2022-07-22 21:16:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:16:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:16:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 475 transitions. [2022-07-22 21:16:04,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2022-07-22 21:16:04,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 475 transitions. [2022-07-22 21:16:04,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 475 transitions. [2022-07-22 21:16:04,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:04,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 475 transitions. [2022-07-22 21:16:04,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.375) internal successors, (475), 8 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,597 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,597 INFO L186 Difference]: Start difference. First operand has 85 places, 85 transitions, 276 flow. Second operand 8 states and 475 transitions. [2022-07-22 21:16:04,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 508 flow [2022-07-22 21:16:04,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 110 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:16:04,602 INFO L242 Difference]: Finished difference. Result has 96 places, 67 transitions, 237 flow [2022-07-22 21:16:04,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2022-07-22 21:16:04,602 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2022-07-22 21:16:04,603 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 237 flow [2022-07-22 21:16:04,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,607 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:04,607 INFO L200 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, 1, 1, 1] [2022-07-22 21:16:04,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:16:04,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1444168350, now seen corresponding path program 1 times [2022-07-22 21:16:04,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:04,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626927166] [2022-07-22 21:16:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:04,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:04,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626927166] [2022-07-22 21:16:04,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626927166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:04,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:04,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:16:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253692246] [2022-07-22 21:16:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:16:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:16:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:16:04,679 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:04,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:04,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:04,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:04,806 INFO L129 PetriNetUnfolder]: 37/196 cut-off events. [2022-07-22 21:16:04,806 INFO L130 PetriNetUnfolder]: For 265/276 co-relation queries the response was YES. [2022-07-22 21:16:04,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 196 events. 37/196 cut-off events. For 265/276 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 654 event pairs, 0 based on Foata normal form. 12/190 useless extension candidates. Maximal degree in co-relation 362. Up to 35 conditions per place. [2022-07-22 21:16:04,809 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 23 selfloop transitions, 11 changer transitions 8/87 dead transitions. [2022-07-22 21:16:04,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 457 flow [2022-07-22 21:16:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:16:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:16:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 530 transitions. [2022-07-22 21:16:04,811 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2022-07-22 21:16:04,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 530 transitions. [2022-07-22 21:16:04,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 530 transitions. [2022-07-22 21:16:04,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:04,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 530 transitions. [2022-07-22 21:16:04,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.888888888888886) internal successors, (530), 9 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,815 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,815 INFO L186 Difference]: Start difference. First operand has 96 places, 67 transitions, 237 flow. Second operand 9 states and 530 transitions. [2022-07-22 21:16:04,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 457 flow [2022-07-22 21:16:04,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 387 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-07-22 21:16:04,822 INFO L242 Difference]: Finished difference. Result has 86 places, 72 transitions, 289 flow [2022-07-22 21:16:04,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=289, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2022-07-22 21:16:04,828 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2022-07-22 21:16:04,829 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 289 flow [2022-07-22 21:16:04,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,829 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:04,829 INFO L200 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, 1, 1, 1] [2022-07-22 21:16:04,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:16:04,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:04,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1245653052, now seen corresponding path program 2 times [2022-07-22 21:16:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:04,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010595557] [2022-07-22 21:16:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:04,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:04,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010595557] [2022-07-22 21:16:04,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010595557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:04,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:04,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:16:04,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109971040] [2022-07-22 21:16:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:04,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:16:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:16:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:16:04,904 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:04,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:04,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:04,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:04,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:05,004 INFO L129 PetriNetUnfolder]: 34/213 cut-off events. [2022-07-22 21:16:05,004 INFO L130 PetriNetUnfolder]: For 308/344 co-relation queries the response was YES. [2022-07-22 21:16:05,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 213 events. 34/213 cut-off events. For 308/344 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 790 event pairs, 0 based on Foata normal form. 25/218 useless extension candidates. Maximal degree in co-relation 426. Up to 37 conditions per place. [2022-07-22 21:16:05,006 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 21 selfloop transitions, 15 changer transitions 11/92 dead transitions. [2022-07-22 21:16:05,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 536 flow [2022-07-22 21:16:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:16:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:16:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 585 transitions. [2022-07-22 21:16:05,009 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8357142857142857 [2022-07-22 21:16:05,009 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 585 transitions. [2022-07-22 21:16:05,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 585 transitions. [2022-07-22 21:16:05,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:05,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 585 transitions. [2022-07-22 21:16:05,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.5) internal successors, (585), 10 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,014 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,014 INFO L186 Difference]: Start difference. First operand has 86 places, 72 transitions, 289 flow. Second operand 10 states and 585 transitions. [2022-07-22 21:16:05,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 536 flow [2022-07-22 21:16:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 511 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-07-22 21:16:05,021 INFO L242 Difference]: Finished difference. Result has 95 places, 77 transitions, 370 flow [2022-07-22 21:16:05,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=370, PETRI_PLACES=95, PETRI_TRANSITIONS=77} [2022-07-22 21:16:05,022 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2022-07-22 21:16:05,022 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 77 transitions, 370 flow [2022-07-22 21:16:05,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:05,028 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:05,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:16:05,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1461818299, now seen corresponding path program 1 times [2022-07-22 21:16:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:05,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426431474] [2022-07-22 21:16:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:05,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426431474] [2022-07-22 21:16:05,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426431474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:05,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:05,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:16:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699346266] [2022-07-22 21:16:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:16:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:16:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:16:05,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:05,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 77 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:05,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:05,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:05,220 INFO L129 PetriNetUnfolder]: 47/248 cut-off events. [2022-07-22 21:16:05,220 INFO L130 PetriNetUnfolder]: For 546/567 co-relation queries the response was YES. [2022-07-22 21:16:05,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 248 events. 47/248 cut-off events. For 546/567 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 973 event pairs, 1 based on Foata normal form. 19/243 useless extension candidates. Maximal degree in co-relation 561. Up to 55 conditions per place. [2022-07-22 21:16:05,222 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 25 selfloop transitions, 23 changer transitions 8/101 dead transitions. [2022-07-22 21:16:05,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 694 flow [2022-07-22 21:16:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:16:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:16:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2022-07-22 21:16:05,236 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8363636363636363 [2022-07-22 21:16:05,236 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2022-07-22 21:16:05,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2022-07-22 21:16:05,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:05,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2022-07-22 21:16:05,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,239 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,240 INFO L186 Difference]: Start difference. First operand has 95 places, 77 transitions, 370 flow. Second operand 11 states and 644 transitions. [2022-07-22 21:16:05,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 694 flow [2022-07-22 21:16:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 647 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-07-22 21:16:05,243 INFO L242 Difference]: Finished difference. Result has 104 places, 83 transitions, 485 flow [2022-07-22 21:16:05,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=485, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2022-07-22 21:16:05,245 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2022-07-22 21:16:05,246 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 485 flow [2022-07-22 21:16:05,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:05,246 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:05,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:16:05,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1283973881, now seen corresponding path program 2 times [2022-07-22 21:16:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:05,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846547123] [2022-07-22 21:16:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:05,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:05,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846547123] [2022-07-22 21:16:05,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846547123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:05,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:05,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:16:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318399806] [2022-07-22 21:16:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:16:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:16:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:16:05,363 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:05,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:05,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:05,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:05,470 INFO L129 PetriNetUnfolder]: 41/246 cut-off events. [2022-07-22 21:16:05,471 INFO L130 PetriNetUnfolder]: For 953/980 co-relation queries the response was YES. [2022-07-22 21:16:05,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 246 events. 41/246 cut-off events. For 953/980 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 993 event pairs, 1 based on Foata normal form. 24/246 useless extension candidates. Maximal degree in co-relation 667. Up to 51 conditions per place. [2022-07-22 21:16:05,473 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 23 selfloop transitions, 23 changer transitions 11/102 dead transitions. [2022-07-22 21:16:05,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 868 flow [2022-07-22 21:16:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:16:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:16:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 638 transitions. [2022-07-22 21:16:05,474 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-07-22 21:16:05,475 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 638 transitions. [2022-07-22 21:16:05,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 638 transitions. [2022-07-22 21:16:05,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:05,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 638 transitions. [2022-07-22 21:16:05,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,478 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,478 INFO L186 Difference]: Start difference. First operand has 104 places, 83 transitions, 485 flow. Second operand 11 states and 638 transitions. [2022-07-22 21:16:05,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 868 flow [2022-07-22 21:16:05,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 805 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-07-22 21:16:05,483 INFO L242 Difference]: Finished difference. Result has 111 places, 85 transitions, 555 flow [2022-07-22 21:16:05,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=555, PETRI_PLACES=111, PETRI_TRANSITIONS=85} [2022-07-22 21:16:05,484 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2022-07-22 21:16:05,484 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 85 transitions, 555 flow [2022-07-22 21:16:05,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,484 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:05,484 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:16:05,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash -495311077, now seen corresponding path program 1 times [2022-07-22 21:16:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:05,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357079557] [2022-07-22 21:16:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:05,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:05,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357079557] [2022-07-22 21:16:05,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357079557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:16:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134786647] [2022-07-22 21:16:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:05,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:05,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:05,580 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) [2022-07-22 21:16:05,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:16:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 21:16:05,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:16:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:05,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:16:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:05,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134786647] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:16:05,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:16:05,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-07-22 21:16:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505083526] [2022-07-22 21:16:05,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:16:05,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:16:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:16:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:16:05,904 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:05,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 85 transitions, 555 flow. Second operand has 14 states, 14 states have (on average 56.57142857142857) internal successors, (792), 14 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:05,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:05,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:05,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:06,193 INFO L129 PetriNetUnfolder]: 55/317 cut-off events. [2022-07-22 21:16:06,193 INFO L130 PetriNetUnfolder]: For 1631/1674 co-relation queries the response was YES. [2022-07-22 21:16:06,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 317 events. 55/317 cut-off events. For 1631/1674 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1287 event pairs, 1 based on Foata normal form. 25/311 useless extension candidates. Maximal degree in co-relation 943. Up to 67 conditions per place. [2022-07-22 21:16:06,196 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 27 selfloop transitions, 38 changer transitions 14/124 dead transitions. [2022-07-22 21:16:06,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 124 transitions, 1327 flow [2022-07-22 21:16:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:16:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:16:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1159 transitions. [2022-07-22 21:16:06,199 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8278571428571428 [2022-07-22 21:16:06,199 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1159 transitions. [2022-07-22 21:16:06,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1159 transitions. [2022-07-22 21:16:06,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:06,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1159 transitions. [2022-07-22 21:16:06,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.95) internal successors, (1159), 20 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:06,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:06,203 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:06,203 INFO L186 Difference]: Start difference. First operand has 111 places, 85 transitions, 555 flow. Second operand 20 states and 1159 transitions. [2022-07-22 21:16:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 124 transitions, 1327 flow [2022-07-22 21:16:06,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 1190 flow, removed 48 selfloop flow, removed 10 redundant places. [2022-07-22 21:16:06,210 INFO L242 Difference]: Finished difference. Result has 127 places, 101 transitions, 862 flow [2022-07-22 21:16:06,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=862, PETRI_PLACES=127, PETRI_TRANSITIONS=101} [2022-07-22 21:16:06,210 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 57 predicate places. [2022-07-22 21:16:06,211 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 101 transitions, 862 flow [2022-07-22 21:16:06,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 56.57142857142857) internal successors, (792), 14 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:06,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:06,211 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:06,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:16:06,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:06,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2022110288, now seen corresponding path program 1 times [2022-07-22 21:16:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:06,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087515226] [2022-07-22 21:16:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:06,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087515226] [2022-07-22 21:16:06,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087515226] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:16:06,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146320794] [2022-07-22 21:16:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:06,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:06,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:06,537 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) [2022-07-22 21:16:06,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:16:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:06,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 21:16:06,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:16:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:06,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:16:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:06,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146320794] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:16:06,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:16:06,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-07-22 21:16:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131247512] [2022-07-22 21:16:06,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:16:06,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:16:06,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:06,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:16:06,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:16:06,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:06,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 101 transitions, 862 flow. Second operand has 17 states, 17 states have (on average 56.588235294117645) internal successors, (962), 17 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:06,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:06,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:06,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:07,172 INFO L129 PetriNetUnfolder]: 77/484 cut-off events. [2022-07-22 21:16:07,172 INFO L130 PetriNetUnfolder]: For 3478/3519 co-relation queries the response was YES. [2022-07-22 21:16:07,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 484 events. 77/484 cut-off events. For 3478/3519 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2036 event pairs, 0 based on Foata normal form. 26/460 useless extension candidates. Maximal degree in co-relation 1573. Up to 103 conditions per place. [2022-07-22 21:16:07,177 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 58 selfloop transitions, 27 changer transitions 26/156 dead transitions. [2022-07-22 21:16:07,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 156 transitions, 2114 flow [2022-07-22 21:16:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 21:16:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-22 21:16:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1450 transitions. [2022-07-22 21:16:07,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-07-22 21:16:07,179 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1450 transitions. [2022-07-22 21:16:07,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1450 transitions. [2022-07-22 21:16:07,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:07,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1450 transitions. [2022-07-22 21:16:07,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:07,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:07,195 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:07,195 INFO L186 Difference]: Start difference. First operand has 127 places, 101 transitions, 862 flow. Second operand 25 states and 1450 transitions. [2022-07-22 21:16:07,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 156 transitions, 2114 flow [2022-07-22 21:16:07,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 156 transitions, 1699 flow, removed 190 selfloop flow, removed 12 redundant places. [2022-07-22 21:16:07,204 INFO L242 Difference]: Finished difference. Result has 153 places, 115 transitions, 992 flow [2022-07-22 21:16:07,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=992, PETRI_PLACES=153, PETRI_TRANSITIONS=115} [2022-07-22 21:16:07,206 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 83 predicate places. [2022-07-22 21:16:07,207 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 115 transitions, 992 flow [2022-07-22 21:16:07,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.588235294117645) internal successors, (962), 17 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:07,207 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:07,207 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:07,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:16:07,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 21:16:07,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:07,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1596067542, now seen corresponding path program 2 times [2022-07-22 21:16:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:07,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568485320] [2022-07-22 21:16:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:07,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:07,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568485320] [2022-07-22 21:16:07,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568485320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:16:07,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322295631] [2022-07-22 21:16:07,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:16:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:07,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:16:07,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:16:07,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:16:07,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:16:07,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 21:16:07,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:16:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:07,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:16:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:07,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322295631] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:16:07,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:16:07,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-07-22 21:16:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929260060] [2022-07-22 21:16:07,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:16:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:16:07,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:16:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:16:07,823 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:07,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 115 transitions, 992 flow. Second operand has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:07,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:07,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:07,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:08,254 INFO L129 PetriNetUnfolder]: 115/731 cut-off events. [2022-07-22 21:16:08,254 INFO L130 PetriNetUnfolder]: For 12521/12666 co-relation queries the response was YES. [2022-07-22 21:16:08,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 731 events. 115/731 cut-off events. For 12521/12666 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4303 event pairs, 0 based on Foata normal form. 28/685 useless extension candidates. Maximal degree in co-relation 2917. Up to 151 conditions per place. [2022-07-22 21:16:08,261 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 59 selfloop transitions, 74 changer transitions 26/204 dead transitions. [2022-07-22 21:16:08,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 204 transitions, 3336 flow [2022-07-22 21:16:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:16:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:16:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1851 transitions. [2022-07-22 21:16:08,264 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8263392857142857 [2022-07-22 21:16:08,264 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1851 transitions. [2022-07-22 21:16:08,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1851 transitions. [2022-07-22 21:16:08,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:08,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1851 transitions. [2022-07-22 21:16:08,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 57.84375) internal successors, (1851), 32 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:08,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:08,270 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:08,270 INFO L186 Difference]: Start difference. First operand has 153 places, 115 transitions, 992 flow. Second operand 32 states and 1851 transitions. [2022-07-22 21:16:08,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 204 transitions, 3336 flow [2022-07-22 21:16:08,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 204 transitions, 2811 flow, removed 253 selfloop flow, removed 13 redundant places. [2022-07-22 21:16:08,292 INFO L242 Difference]: Finished difference. Result has 185 places, 153 transitions, 1757 flow [2022-07-22 21:16:08,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1757, PETRI_PLACES=185, PETRI_TRANSITIONS=153} [2022-07-22 21:16:08,292 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 115 predicate places. [2022-07-22 21:16:08,292 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 153 transitions, 1757 flow [2022-07-22 21:16:08,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:08,293 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:08,293 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:08,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:16:08,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:08,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1423924408, now seen corresponding path program 3 times [2022-07-22 21:16:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:08,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906738777] [2022-07-22 21:16:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:08,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906738777] [2022-07-22 21:16:08,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906738777] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:16:08,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851937991] [2022-07-22 21:16:08,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:16:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:08,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:16:08,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:16:08,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 21:16:08,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:16:08,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 21:16:08,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:16:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:08,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:16:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:16:08,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851937991] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:16:08,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:16:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-07-22 21:16:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427895837] [2022-07-22 21:16:08,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:16:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:16:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:16:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:16:08,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:08,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 153 transitions, 1757 flow. Second operand has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:08,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:08,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:08,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:09,360 INFO L129 PetriNetUnfolder]: 171/1078 cut-off events. [2022-07-22 21:16:09,360 INFO L130 PetriNetUnfolder]: For 33522/33712 co-relation queries the response was YES. [2022-07-22 21:16:09,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 1078 events. 171/1078 cut-off events. For 33522/33712 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7503 event pairs, 0 based on Foata normal form. 37/1006 useless extension candidates. Maximal degree in co-relation 5197. Up to 219 conditions per place. [2022-07-22 21:16:09,372 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 59 selfloop transitions, 136 changer transitions 26/266 dead transitions. [2022-07-22 21:16:09,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 266 transitions, 5405 flow [2022-07-22 21:16:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 21:16:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 21:16:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2085 transitions. [2022-07-22 21:16:09,374 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2022-07-22 21:16:09,374 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2085 transitions. [2022-07-22 21:16:09,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2085 transitions. [2022-07-22 21:16:09,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:09,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2085 transitions. [2022-07-22 21:16:09,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 57.916666666666664) internal successors, (2085), 36 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:09,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 70.0) internal successors, (2590), 37 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:09,384 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 70.0) internal successors, (2590), 37 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:09,385 INFO L186 Difference]: Start difference. First operand has 185 places, 153 transitions, 1757 flow. Second operand 36 states and 2085 transitions. [2022-07-22 21:16:09,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 266 transitions, 5405 flow [2022-07-22 21:16:09,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 266 transitions, 4634 flow, removed 375 selfloop flow, removed 15 redundant places. [2022-07-22 21:16:09,433 INFO L242 Difference]: Finished difference. Result has 219 places, 207 transitions, 2950 flow [2022-07-22 21:16:09,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2950, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2022-07-22 21:16:09,434 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 149 predicate places. [2022-07-22 21:16:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 2950 flow [2022-07-22 21:16:09,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:09,434 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:09,435 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:09,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:16:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:09,658 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 532154320, now seen corresponding path program 4 times [2022-07-22 21:16:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:09,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334536854] [2022-07-22 21:16:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:09,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334536854] [2022-07-22 21:16:09,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334536854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:16:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431238048] [2022-07-22 21:16:09,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 21:16:09,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:16:09,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:09,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:16:09,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:16:09,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 21:16:09,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:16:09,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 21:16:09,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:16:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:09,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:16:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:10,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431238048] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:16:10,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:16:10,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2022-07-22 21:16:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405659828] [2022-07-22 21:16:10,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:16:10,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:16:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:16:10,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:16:10,012 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-07-22 21:16:10,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 2950 flow. Second operand has 17 states, 17 states have (on average 56.294117647058826) internal successors, (957), 17 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:10,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:10,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-07-22 21:16:10,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:10,524 INFO L129 PetriNetUnfolder]: 205/1340 cut-off events. [2022-07-22 21:16:10,524 INFO L130 PetriNetUnfolder]: For 63891/64032 co-relation queries the response was YES. [2022-07-22 21:16:10,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 1340 events. 205/1340 cut-off events. For 63891/64032 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9994 event pairs, 1 based on Foata normal form. 46/1247 useless extension candidates. Maximal degree in co-relation 7239. Up to 257 conditions per place. [2022-07-22 21:16:10,541 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 62 selfloop transitions, 169 changer transitions 11/287 dead transitions. [2022-07-22 21:16:10,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 287 transitions, 6519 flow [2022-07-22 21:16:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 21:16:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-22 21:16:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1445 transitions. [2022-07-22 21:16:10,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8257142857142857 [2022-07-22 21:16:10,543 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1445 transitions. [2022-07-22 21:16:10,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1445 transitions. [2022-07-22 21:16:10,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:10,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1445 transitions. [2022-07-22 21:16:10,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 57.8) internal successors, (1445), 25 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:10,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:10,549 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:10,549 INFO L186 Difference]: Start difference. First operand has 219 places, 207 transitions, 2950 flow. Second operand 25 states and 1445 transitions. [2022-07-22 21:16:10,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 287 transitions, 6519 flow [2022-07-22 21:16:10,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 287 transitions, 4734 flow, removed 866 selfloop flow, removed 20 redundant places. [2022-07-22 21:16:10,643 INFO L242 Difference]: Finished difference. Result has 226 places, 256 transitions, 3685 flow [2022-07-22 21:16:10,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3685, PETRI_PLACES=226, PETRI_TRANSITIONS=256} [2022-07-22 21:16:10,644 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 156 predicate places. [2022-07-22 21:16:10,644 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 256 transitions, 3685 flow [2022-07-22 21:16:10,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.294117647058826) internal successors, (957), 17 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:10,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:10,644 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:10,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 21:16:10,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 21:16:10,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:16:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1084480305, now seen corresponding path program 5 times [2022-07-22 21:16:10,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:10,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55659729] [2022-07-22 21:16:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:16:10,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:16:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:16:10,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:16:10,921 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:16:10,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-22 21:16:10,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-22 21:16:10,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-22 21:16:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:16:10,924 INFO L356 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1] [2022-07-22 21:16:10,928 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:16:10,928 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:16:10,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:16:10 BasicIcfg [2022-07-22 21:16:10,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:16:10,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:16:10,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:16:10,999 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:16:10,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:03" (3/4) ... [2022-07-22 21:16:11,000 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 21:16:11,070 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:16:11,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:16:11,070 INFO L158 Benchmark]: Toolchain (without parser) took 8251.66ms. Allocated memory was 104.9MB in the beginning and 220.2MB in the end (delta: 115.3MB). Free memory was 72.8MB in the beginning and 156.7MB in the end (delta: -83.9MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2022-07-22 21:16:11,071 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:16:11,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.91ms. Allocated memory is still 104.9MB. Free memory was 72.6MB in the beginning and 70.7MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:16:11,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.17ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 69.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:16:11,071 INFO L158 Benchmark]: Boogie Preprocessor took 35.82ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 67.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:16:11,071 INFO L158 Benchmark]: RCFGBuilder took 265.38ms. Allocated memory is still 104.9MB. Free memory was 67.7MB in the beginning and 56.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 21:16:11,072 INFO L158 Benchmark]: TraceAbstraction took 7462.47ms. Allocated memory was 104.9MB in the beginning and 220.2MB in the end (delta: 115.3MB). Free memory was 55.5MB in the beginning and 170.3MB in the end (delta: -114.9MB). Peak memory consumption was 848.9kB. Max. memory is 16.1GB. [2022-07-22 21:16:11,072 INFO L158 Benchmark]: Witness Printer took 71.66ms. Allocated memory is still 220.2MB. Free memory was 170.3MB in the beginning and 156.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-22 21:16:11,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.91ms. Allocated memory is still 104.9MB. Free memory was 72.6MB in the beginning and 70.7MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.17ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 69.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.82ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 67.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.38ms. Allocated memory is still 104.9MB. Free memory was 67.7MB in the beginning and 56.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7462.47ms. Allocated memory was 104.9MB in the beginning and 220.2MB in the end (delta: 115.3MB). Free memory was 55.5MB in the beginning and 170.3MB in the end (delta: -114.9MB). Peak memory consumption was 848.9kB. Max. memory is 16.1GB. * Witness Printer took 71.66ms. Allocated memory is still 220.2MB. Free memory was 170.3MB in the beginning and 156.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=0] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=2, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=2] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=2, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=15, id1={5:0}, id2={3:0}, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=15, id1={5:0}, id2={3:0}, j=16, k=4, k=4] [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=15, id1={5:0}, id2={3:0}, j=16, k=4, k=4] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 370 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 219 mSDsCounter, 369 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1086 IncrementalHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 369 mSolverCounterUnsat, 53 mSDtfsCounter, 1086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 845 GetRequests, 608 SyntacticMatches, 3 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3685occurred in iteration=11, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 951 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1162 ConstructedInterpolants, 0 QuantifiedInterpolants, 4213 SizeOfPredicates, 32 NumberOfNonLiveVariables, 792 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 45/390 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 21:16:11,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE