./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --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/weaver/bench-exp1x3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3241bc7a4fb5fce7b9ee4eb3820005fca7c10e90159ff3c3ee85c2790d085281 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:36:17,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:36:17,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:36:17,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:36:17,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:36:17,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:36:17,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:36:17,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:36:17,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:36:17,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:36:17,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:36:17,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:36:17,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:36:17,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:36:17,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:36:17,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:36:17,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:36:17,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:36:17,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:36:17,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:36:17,205 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:36:17,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:36:17,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:36:17,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:36:17,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:36:17,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:36:17,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:36:17,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:36:17,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:36:17,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:36:17,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:36:17,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:36:17,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:36:17,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:36:17,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:36:17,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:36:17,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:36:17,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:36:17,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:36:17,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:36:17,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:36:17,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:36:17,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:36:17,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:36:17,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:36:17,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:36:17,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:36:17,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:36:17,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:36:17,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:36:17,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:36:17,232 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:36:17,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:36:17,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:36:17,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:36:17,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:36:17,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:36:17,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:36:17,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:36:17,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:36:17,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:36:17,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:36:17,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:36:17,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:36:17,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:36:17,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:36:17,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:36:17,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:36:17,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:36:17,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:36:17,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:36:17,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:36:17,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:36:17,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:36:17,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:36:17,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:36:17,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3241bc7a4fb5fce7b9ee4eb3820005fca7c10e90159ff3c3ee85c2790d085281 [2022-07-22 21:36:17,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:36:17,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:36:17,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:36:17,404 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:36:17,405 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:36:17,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2022-07-22 21:36:17,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed4022ba/b40fb2017dd6404abbf08c242d98ef31/FLAGf89602e94 [2022-07-22 21:36:17,779 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:36:17,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2022-07-22 21:36:17,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed4022ba/b40fb2017dd6404abbf08c242d98ef31/FLAGf89602e94 [2022-07-22 21:36:18,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed4022ba/b40fb2017dd6404abbf08c242d98ef31 [2022-07-22 21:36:18,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:36:18,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:36:18,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:36:18,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:36:18,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:36:18,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593de0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18, skipping insertion in model container [2022-07-22 21:36:18,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:36:18,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:36:18,375 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/weaver/bench-exp1x3.wvr.c[1849,1862] [2022-07-22 21:36:18,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:36:18,383 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:36:18,400 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/weaver/bench-exp1x3.wvr.c[1849,1862] [2022-07-22 21:36:18,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:36:18,414 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:36:18,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18 WrapperNode [2022-07-22 21:36:18,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:36:18,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:36:18,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:36:18,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:36:18,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,443 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-07-22 21:36:18,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:36:18,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:36:18,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:36:18,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:36:18,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:36:18,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:36:18,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:36:18,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:36:18,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (1/1) ... [2022-07-22 21:36:18,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:36:18,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:36:18,492 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 21:36:18,526 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 21:36:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:36:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:36:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:36:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:36:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:36:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:36:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:36:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:36:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:36:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:36:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:36:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:36:18,556 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 21:36:18,625 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:36:18,626 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:36:18,770 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:36:18,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:36:18,775 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:36:18,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:36:18 BoogieIcfgContainer [2022-07-22 21:36:18,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:36:18,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:36:18,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:36:18,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:36:18,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:36:18" (1/3) ... [2022-07-22 21:36:18,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b12896c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:36:18, skipping insertion in model container [2022-07-22 21:36:18,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:36:18" (2/3) ... [2022-07-22 21:36:18,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b12896c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:36:18, skipping insertion in model container [2022-07-22 21:36:18,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:36:18" (3/3) ... [2022-07-22 21:36:18,781 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2022-07-22 21:36:18,785 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:36:18,791 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:36:18,791 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:36:18,791 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:36:18,837 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:36:18,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 178 flow [2022-07-22 21:36:18,904 INFO L129 PetriNetUnfolder]: 6/79 cut-off events. [2022-07-22 21:36:18,904 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:36:18,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 6/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2022-07-22 21:36:18,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 178 flow [2022-07-22 21:36:18,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 152 flow [2022-07-22 21:36:18,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:36:18,921 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@641085ef, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5aee0aee [2022-07-22 21:36:18,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:36:18,951 INFO L129 PetriNetUnfolder]: 6/69 cut-off events. [2022-07-22 21:36:18,951 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:36:18,951 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:18,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:18,952 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 21:36:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1261919570, now seen corresponding path program 1 times [2022-07-22 21:36:18,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:18,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629712253] [2022-07-22 21:36:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:18,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:19,093 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 21:36:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:19,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629712253] [2022-07-22 21:36:19,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629712253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:36:19,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:36:19,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:36:19,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374701886] [2022-07-22 21:36:19,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:36:19,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:36:19,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:36:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:36:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:36:19,126 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 81 [2022-07-22 21:36:19,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 21:36:19,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:36:19,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 81 [2022-07-22 21:36:19,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:36:19,169 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2022-07-22 21:36:19,170 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:36:19,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 66 events. 2/66 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 47. Up to 5 conditions per place. [2022-07-22 21:36:19,172 INFO L132 encePairwiseOnDemand]: 77/81 looper letters, 4 selfloop transitions, 0 changer transitions 2/66 dead transitions. [2022-07-22 21:36:19,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 152 flow [2022-07-22 21:36:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:36:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:36:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 152 transitions. [2022-07-22 21:36:19,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9382716049382716 [2022-07-22 21:36:19,184 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 152 transitions. [2022-07-22 21:36:19,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 152 transitions. [2022-07-22 21:36:19,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:36:19,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 152 transitions. [2022-07-22 21:36:19,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 21:36:19,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 21:36:19,201 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 21:36:19,202 INFO L186 Difference]: Start difference. First operand has 71 places, 70 transitions, 152 flow. Second operand 2 states and 152 transitions. [2022-07-22 21:36:19,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 152 flow [2022-07-22 21:36:19,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:36:19,211 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 132 flow [2022-07-22 21:36:19,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2022-07-22 21:36:19,219 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2022-07-22 21:36:19,219 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 132 flow [2022-07-22 21:36:19,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 21:36:19,220 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:19,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:36:19,221 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 21:36:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2129909204, now seen corresponding path program 1 times [2022-07-22 21:36:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:19,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064653827] [2022-07-22 21:36:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:19,408 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 21:36:19,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064653827] [2022-07-22 21:36:19,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064653827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:36:19,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:36:19,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:36:19,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309925184] [2022-07-22 21:36:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:36:19,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:36:19,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:36:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:36:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:36:19,426 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 81 [2022-07-22 21:36:19,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 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 21:36:19,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:36:19,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 81 [2022-07-22 21:36:19,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:36:19,573 INFO L129 PetriNetUnfolder]: 31/147 cut-off events. [2022-07-22 21:36:19,574 INFO L130 PetriNetUnfolder]: For 8/20 co-relation queries the response was YES. [2022-07-22 21:36:19,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 147 events. 31/147 cut-off events. For 8/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 16 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 232. Up to 48 conditions per place. [2022-07-22 21:36:19,575 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 25 selfloop transitions, 5 changer transitions 4/76 dead transitions. [2022-07-22 21:36:19,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 227 flow [2022-07-22 21:36:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:36:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:36:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 399 transitions. [2022-07-22 21:36:19,578 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-07-22 21:36:19,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 399 transitions. [2022-07-22 21:36:19,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 399 transitions. [2022-07-22 21:36:19,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:36:19,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 399 transitions. [2022-07-22 21:36:19,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 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 21:36:19,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 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 21:36:19,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 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 21:36:19,582 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 132 flow. Second operand 7 states and 399 transitions. [2022-07-22 21:36:19,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 227 flow [2022-07-22 21:36:19,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:36:19,584 INFO L242 Difference]: Finished difference. Result has 75 places, 66 transitions, 159 flow [2022-07-22 21:36:19,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2022-07-22 21:36:19,584 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2022-07-22 21:36:19,585 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 159 flow [2022-07-22 21:36:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 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 21:36:19,585 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:19,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:19,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:36:19,586 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 21:36:19,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1998264494, now seen corresponding path program 1 times [2022-07-22 21:36:19,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:19,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780073859] [2022-07-22 21:36:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:19,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780073859] [2022-07-22 21:36:19,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780073859] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:36:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801108537] [2022-07-22 21:36:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:36:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:36:19,699 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 21:36:19,703 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 21:36:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:19,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 21:36:19,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:36:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:20,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:36:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:20,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801108537] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:36:20,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:36:20,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-07-22 21:36:20,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244343897] [2022-07-22 21:36:20,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:36:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:36:20,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:36:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:36:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:36:20,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 81 [2022-07-22 21:36:20,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 159 flow. Second operand has 10 states, 10 states have (on average 53.3) internal successors, (533), 10 states have internal predecessors, (533), 0 states have call successors, (0), 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 21:36:20,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:36:20,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 81 [2022-07-22 21:36:20,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:36:20,525 INFO L129 PetriNetUnfolder]: 38/186 cut-off events. [2022-07-22 21:36:20,526 INFO L130 PetriNetUnfolder]: For 26/34 co-relation queries the response was YES. [2022-07-22 21:36:20,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 186 events. 38/186 cut-off events. For 26/34 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 597 event pairs, 3 based on Foata normal form. 2/168 useless extension candidates. Maximal degree in co-relation 338. Up to 36 conditions per place. [2022-07-22 21:36:20,527 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 40 selfloop transitions, 16 changer transitions 1/97 dead transitions. [2022-07-22 21:36:20,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 361 flow [2022-07-22 21:36:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:36:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:36:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 611 transitions. [2022-07-22 21:36:20,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6857463524130191 [2022-07-22 21:36:20,530 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 611 transitions. [2022-07-22 21:36:20,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 611 transitions. [2022-07-22 21:36:20,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:36:20,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 611 transitions. [2022-07-22 21:36:20,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.54545454545455) internal successors, (611), 11 states have internal predecessors, (611), 0 states have call successors, (0), 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 21:36:20,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 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 21:36:20,534 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 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 21:36:20,534 INFO L186 Difference]: Start difference. First operand has 75 places, 66 transitions, 159 flow. Second operand 11 states and 611 transitions. [2022-07-22 21:36:20,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 361 flow [2022-07-22 21:36:20,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 346 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-22 21:36:20,537 INFO L242 Difference]: Finished difference. Result has 84 places, 74 transitions, 244 flow [2022-07-22 21:36:20,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=244, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2022-07-22 21:36:20,538 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-07-22 21:36:20,538 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 244 flow [2022-07-22 21:36:20,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.3) internal successors, (533), 10 states have internal predecessors, (533), 0 states have call successors, (0), 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 21:36:20,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:20,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:20,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 21:36:20,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:36:20,756 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 21:36:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2140770938, now seen corresponding path program 2 times [2022-07-22 21:36:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360591177] [2022-07-22 21:36:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:20,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360591177] [2022-07-22 21:36:20,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360591177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:36:20,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:36:20,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:36:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228728388] [2022-07-22 21:36:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:36:20,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:36:20,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:36:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:36:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:36:20,907 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 81 [2022-07-22 21:36:20,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 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 21:36:20,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:36:20,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 81 [2022-07-22 21:36:20,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:36:21,009 INFO L129 PetriNetUnfolder]: 34/161 cut-off events. [2022-07-22 21:36:21,012 INFO L130 PetriNetUnfolder]: For 110/114 co-relation queries the response was YES. [2022-07-22 21:36:21,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 161 events. 34/161 cut-off events. For 110/114 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 460 event pairs, 10 based on Foata normal form. 3/158 useless extension candidates. Maximal degree in co-relation 388. Up to 66 conditions per place. [2022-07-22 21:36:21,015 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 32 selfloop transitions, 5 changer transitions 7/84 dead transitions. [2022-07-22 21:36:21,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 386 flow [2022-07-22 21:36:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:36:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:36:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 338 transitions. [2022-07-22 21:36:21,016 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6954732510288066 [2022-07-22 21:36:21,016 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 338 transitions. [2022-07-22 21:36:21,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 338 transitions. [2022-07-22 21:36:21,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:36:21,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 338 transitions. [2022-07-22 21:36:21,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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 21:36:21,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 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 21:36:21,019 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 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 21:36:21,019 INFO L186 Difference]: Start difference. First operand has 84 places, 74 transitions, 244 flow. Second operand 6 states and 338 transitions. [2022-07-22 21:36:21,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 386 flow [2022-07-22 21:36:21,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 373 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-22 21:36:21,023 INFO L242 Difference]: Finished difference. Result has 87 places, 74 transitions, 252 flow [2022-07-22 21:36:21,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2022-07-22 21:36:21,023 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 16 predicate places. [2022-07-22 21:36:21,024 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 252 flow [2022-07-22 21:36:21,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 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 21:36:21,024 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:21,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:36:21,025 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 21:36:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 905496518, now seen corresponding path program 1 times [2022-07-22 21:36:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415217130] [2022-07-22 21:36:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:21,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415217130] [2022-07-22 21:36:21,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415217130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:36:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522051036] [2022-07-22 21:36:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:21,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:36:21,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:36:21,091 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 21:36:21,092 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 21:36:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:21,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 21:36:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:36:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:21,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:36:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:21,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522051036] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:36:21,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:36:21,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-07-22 21:36:21,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307250317] [2022-07-22 21:36:21,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:36:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:36:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:36:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:36:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:36:21,376 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 81 [2022-07-22 21:36:21,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 252 flow. Second operand has 10 states, 10 states have (on average 53.2) internal successors, (532), 10 states have internal predecessors, (532), 0 states have call successors, (0), 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 21:36:21,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:36:21,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 81 [2022-07-22 21:36:21,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:36:21,542 INFO L129 PetriNetUnfolder]: 37/150 cut-off events. [2022-07-22 21:36:21,542 INFO L130 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-07-22 21:36:21,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 150 events. 37/150 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 363 event pairs, 3 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 400. Up to 55 conditions per place. [2022-07-22 21:36:21,544 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 36 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2022-07-22 21:36:21,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 457 flow [2022-07-22 21:36:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:36:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:36:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 596 transitions. [2022-07-22 21:36:21,546 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6689113355780022 [2022-07-22 21:36:21,546 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 596 transitions. [2022-07-22 21:36:21,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 596 transitions. [2022-07-22 21:36:21,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:36:21,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 596 transitions. [2022-07-22 21:36:21,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.18181818181818) internal successors, (596), 11 states have internal predecessors, (596), 0 states have call successors, (0), 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 21:36:21,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 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 21:36:21,549 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 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 21:36:21,549 INFO L186 Difference]: Start difference. First operand has 87 places, 74 transitions, 252 flow. Second operand 11 states and 596 transitions. [2022-07-22 21:36:21,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 457 flow [2022-07-22 21:36:21,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 429 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-22 21:36:21,552 INFO L242 Difference]: Finished difference. Result has 93 places, 80 transitions, 316 flow [2022-07-22 21:36:21,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=316, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2022-07-22 21:36:21,553 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 22 predicate places. [2022-07-22 21:36:21,553 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 316 flow [2022-07-22 21:36:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.2) internal successors, (532), 10 states have internal predecessors, (532), 0 states have call successors, (0), 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 21:36:21,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:21,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:21,573 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 21:36:21,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:36:21,771 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 21:36:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -109267554, now seen corresponding path program 1 times [2022-07-22 21:36:21,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154869976] [2022-07-22 21:36:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:22,099 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 21:36:22,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:22,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154869976] [2022-07-22 21:36:22,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154869976] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:36:22,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989850600] [2022-07-22 21:36:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:36:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:36:22,102 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 21:36:22,103 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 21:36:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:22,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 21:36:22,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:36:46,484 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 21:36:46,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:37:18,471 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 21:37:18,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989850600] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:37:18,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:37:18,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-07-22 21:37:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883788225] [2022-07-22 21:37:18,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:37:18,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 21:37:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:37:18,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 21:37:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=504, Unknown=13, NotChecked=0, Total=650 [2022-07-22 21:37:18,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 81 [2022-07-22 21:37:18,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 316 flow. Second operand has 26 states, 26 states have (on average 52.0) internal successors, (1352), 26 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:37:18,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:37:18,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 81 [2022-07-22 21:37:18,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:37:20,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:37:22,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:37:25,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:37:54,646 WARN L233 SmtUtils]: Spent 21.94s on a formula simplification. DAG size of input: 47 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 21:37:57,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:01,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:03,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:09,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:12,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:14,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:17,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:19,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:23,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:38:50,505 WARN L233 SmtUtils]: Spent 15.38s on a formula simplification. DAG size of input: 83 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 21:39:19,199 WARN L233 SmtUtils]: Spent 19.25s on a formula simplification. DAG size of input: 85 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 21:39:21,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:22,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:33,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:36,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:38,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:40,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:43,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:45,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:48,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:51,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:53,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:55,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:57,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:39:59,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:00,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:02,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:04,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:12,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:14,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:16,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:40:18,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:41:00,993 WARN L233 SmtUtils]: Spent 19.32s on a formula simplification. DAG size of input: 71 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 21:41:05,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:41:07,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []