./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3 --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 add10d46e99029b97aae5dec92f1ca1d025dd38a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:06:26,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:06:26,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:06:26,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:06:26,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:06:26,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:06:26,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:06:26,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:06:26,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:06:26,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:06:26,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:06:26,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:06:26,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:06:26,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:06:26,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:06:26,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:06:26,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:06:26,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:06:26,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:06:26,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:06:26,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:06:26,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:06:26,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:06:26,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:06:26,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:06:26,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:06:26,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:06:26,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:06:26,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:06:26,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:06:26,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:06:26,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:06:26,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:06:26,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:06:26,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:06:26,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:06:26,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:06:26,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:06:26,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:06:26,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:06:26,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:06:26,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:06:26,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:06:26,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:06:26,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:06:26,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:06:26,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:06:26,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:06:26,297 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:06:26,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:06:26,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:06:26,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:06:26,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:06:26,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:06:26,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:06:26,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:06:26,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:06:26,300 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:06:26,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:06:26,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:06:26,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:06:26,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:06:26,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:06:26,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:06:26,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:26,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:06:26,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:06:26,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:06:26,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:06:26,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:06:26,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:06:26,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:06:26,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:06:26,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:06:26,304 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> add10d46e99029b97aae5dec92f1ca1d025dd38a [2021-10-15 20:06:26,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:06:26,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:06:26,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:06:26,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:06:26,643 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:06:26,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2021-10-15 20:06:26,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/data/178f93029/b6369c1ba0a14548bb5b31d8465282fd/FLAGbb47784fc [2021-10-15 20:06:27,359 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:06:27,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2021-10-15 20:06:27,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/data/178f93029/b6369c1ba0a14548bb5b31d8465282fd/FLAGbb47784fc [2021-10-15 20:06:27,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/data/178f93029/b6369c1ba0a14548bb5b31d8465282fd [2021-10-15 20:06:27,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:06:27,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:06:27,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:27,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:06:27,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:06:27,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:27" (1/1) ... [2021-10-15 20:06:27,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ea2262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:27, skipping insertion in model container [2021-10-15 20:06:27,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:27" (1/1) ... [2021-10-15 20:06:27,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:06:27,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:06:27,937 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2021-10-15 20:06:28,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:28,097 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:06:28,123 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2021-10-15 20:06:28,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:28,213 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:06:28,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28 WrapperNode [2021-10-15 20:06:28,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:28,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:28,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:06:28,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:06:28,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:28,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:06:28,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:06:28,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:06:28,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:06:28,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:06:28,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:06:28,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:06:28,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (1/1) ... [2021-10-15 20:06:28,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:28,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:06:28,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:06:28,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:06:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:06:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:06:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:06:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:06:29,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:06:29,886 INFO L299 CfgBuilder]: Removed 206 assume(true) statements. [2021-10-15 20:06:29,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:29 BoogieIcfgContainer [2021-10-15 20:06:29,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:06:29,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:06:29,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:06:29,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:06:29,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:06:27" (1/3) ... [2021-10-15 20:06:29,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc78083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:29, skipping insertion in model container [2021-10-15 20:06:29,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:28" (2/3) ... [2021-10-15 20:06:29,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc78083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:29, skipping insertion in model container [2021-10-15 20:06:29,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:29" (3/3) ... [2021-10-15 20:06:29,904 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2021-10-15 20:06:29,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:06:29,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 20:06:29,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:06:29,975 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:06:29,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 20:06:29,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 213 transitions, 426 flow [2021-10-15 20:06:30,072 INFO L129 PetriNetUnfolder]: 70/213 cut-off events. [2021-10-15 20:06:30,073 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:30,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 213 events. 70/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 563 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-10-15 20:06:30,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 213 transitions, 426 flow [2021-10-15 20:06:30,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 206 transitions, 412 flow [2021-10-15 20:06:30,105 INFO L129 PetriNetUnfolder]: 21/74 cut-off events. [2021-10-15 20:06:30,106 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:30,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:30,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:30,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:30,115 INFO L82 PathProgramCache]: Analyzing trace with hash -947048074, now seen corresponding path program 1 times [2021-10-15 20:06:30,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:30,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765299936] [2021-10-15 20:06:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:30,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:30,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:30,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765299936] [2021-10-15 20:06:30,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765299936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:30,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:30,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:06:30,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819820779] [2021-10-15 20:06:30,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:06:30,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:06:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:06:30,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 213 [2021-10-15 20:06:30,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 206 transitions, 412 flow. Second operand has 2 states, 2 states have (on average 206.5) internal successors, (413), 2 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:30,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:30,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 213 [2021-10-15 20:06:30,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:30,666 INFO L129 PetriNetUnfolder]: 62/201 cut-off events. [2021-10-15 20:06:30,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:30,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 201 events. 62/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 531 event pairs, 0 based on Foata normal form. 4/141 useless extension candidates. Maximal degree in co-relation 201. Up to 10 conditions per place. [2021-10-15 20:06:30,675 INFO L132 encePairwiseOnDemand]: 208/213 looper letters, 0 selfloop transitions, 0 changer transitions 0/201 dead transitions. [2021-10-15 20:06:30,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 201 transitions, 402 flow [2021-10-15 20:06:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:06:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:06:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2021-10-15 20:06:30,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9788732394366197 [2021-10-15 20:06:30,704 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 417 transitions. [2021-10-15 20:06:30,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 417 transitions. [2021-10-15 20:06:30,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:30,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 417 transitions. [2021-10-15 20:06:30,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:30,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:30,734 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:30,736 INFO L186 Difference]: Start difference. First operand has 140 places, 206 transitions, 412 flow. Second operand 2 states and 417 transitions. [2021-10-15 20:06:30,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 201 transitions, 402 flow [2021-10-15 20:06:30,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 201 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:06:30,754 INFO L242 Difference]: Finished difference. Result has 141 places, 201 transitions, 402 flow [2021-10-15 20:06:30,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=402, PETRI_PLACES=141, PETRI_TRANSITIONS=201} [2021-10-15 20:06:30,758 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, 1 predicate places. [2021-10-15 20:06:30,759 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 201 transitions, 402 flow [2021-10-15 20:06:30,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 206.5) internal successors, (413), 2 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:30,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:30,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:30,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:06:30,762 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash 858971479, now seen corresponding path program 1 times [2021-10-15 20:06:30,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:30,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622626420] [2021-10-15 20:06:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:30,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:30,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:30,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622626420] [2021-10-15 20:06:30,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622626420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:30,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:30,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:06:31,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810526889] [2021-10-15 20:06:31,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:06:31,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:06:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:06:31,008 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 213 [2021-10-15 20:06:31,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 201 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 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) [2021-10-15 20:06:31,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:31,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 213 [2021-10-15 20:06:31,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:31,048 INFO L129 PetriNetUnfolder]: 25/81 cut-off events. [2021-10-15 20:06:31,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:31,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 25/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2021-10-15 20:06:31,050 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 1 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2021-10-15 20:06:31,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 166 flow [2021-10-15 20:06:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:06:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:06:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2021-10-15 20:06:31,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9577464788732394 [2021-10-15 20:06:31,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2021-10-15 20:06:31,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2021-10-15 20:06:31,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:31,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2021-10-15 20:06:31,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,073 INFO L186 Difference]: Start difference. First operand has 141 places, 201 transitions, 402 flow. Second operand 3 states and 612 transitions. [2021-10-15 20:06:31,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 166 flow [2021-10-15 20:06:31,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:06:31,082 INFO L242 Difference]: Finished difference. Result has 60 places, 81 transitions, 164 flow [2021-10-15 20:06:31,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=60, PETRI_TRANSITIONS=81} [2021-10-15 20:06:31,084 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -80 predicate places. [2021-10-15 20:06:31,084 INFO L470 AbstractCegarLoop]: Abstraction has has 60 places, 81 transitions, 164 flow [2021-10-15 20:06:31,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 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) [2021-10-15 20:06:31,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:31,086 INFO L254 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] [2021-10-15 20:06:31,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:06:31,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:31,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1840859928, now seen corresponding path program 1 times [2021-10-15 20:06:31,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:31,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166324561] [2021-10-15 20:06:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:31,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:31,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:31,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166324561] [2021-10-15 20:06:31,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166324561] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:31,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:31,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:06:31,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827431714] [2021-10-15 20:06:31,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:06:31,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:06:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:06:31,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 213 [2021-10-15 20:06:31,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 81 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:31,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 213 [2021-10-15 20:06:31,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:31,406 INFO L129 PetriNetUnfolder]: 24/80 cut-off events. [2021-10-15 20:06:31,406 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:31,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 80 events. 24/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 87. Up to 9 conditions per place. [2021-10-15 20:06:31,408 INFO L132 encePairwiseOnDemand]: 209/213 looper letters, 3 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2021-10-15 20:06:31,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 174 flow [2021-10-15 20:06:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:06:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:06:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 977 transitions. [2021-10-15 20:06:31,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9173708920187793 [2021-10-15 20:06:31,426 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 977 transitions. [2021-10-15 20:06:31,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 977 transitions. [2021-10-15 20:06:31,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:31,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 977 transitions. [2021-10-15 20:06:31,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.4) internal successors, (977), 5 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,438 INFO L186 Difference]: Start difference. First operand has 60 places, 81 transitions, 164 flow. Second operand 5 states and 977 transitions. [2021-10-15 20:06:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 174 flow [2021-10-15 20:06:31,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:06:31,443 INFO L242 Difference]: Finished difference. Result has 63 places, 80 transitions, 167 flow [2021-10-15 20:06:31,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=63, PETRI_TRANSITIONS=80} [2021-10-15 20:06:31,444 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -77 predicate places. [2021-10-15 20:06:31,444 INFO L470 AbstractCegarLoop]: Abstraction has has 63 places, 80 transitions, 167 flow [2021-10-15 20:06:31,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:31,446 INFO L254 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] [2021-10-15 20:06:31,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:06:31,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:31,449 INFO L82 PathProgramCache]: Analyzing trace with hash 655441665, now seen corresponding path program 1 times [2021-10-15 20:06:31,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:31,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863273004] [2021-10-15 20:06:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:31,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:31,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:31,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863273004] [2021-10-15 20:06:31,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863273004] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:31,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:31,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:06:31,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256009402] [2021-10-15 20:06:31,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:06:31,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:06:31,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:06:31,590 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 213 [2021-10-15 20:06:31,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 80 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:31,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 213 [2021-10-15 20:06:31,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:31,654 INFO L129 PetriNetUnfolder]: 31/111 cut-off events. [2021-10-15 20:06:31,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:31,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 111 events. 31/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 132. Up to 10 conditions per place. [2021-10-15 20:06:31,656 INFO L132 encePairwiseOnDemand]: 203/213 looper letters, 10 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2021-10-15 20:06:31,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 207 flow [2021-10-15 20:06:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:06:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:06:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2021-10-15 20:06:31,660 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.810641627543036 [2021-10-15 20:06:31,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2021-10-15 20:06:31,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2021-10-15 20:06:31,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:31,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2021-10-15 20:06:31,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,669 INFO L186 Difference]: Start difference. First operand has 63 places, 80 transitions, 167 flow. Second operand 3 states and 518 transitions. [2021-10-15 20:06:31,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 207 flow [2021-10-15 20:06:31,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:06:31,677 INFO L242 Difference]: Finished difference. Result has 64 places, 81 transitions, 200 flow [2021-10-15 20:06:31,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2021-10-15 20:06:31,678 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -76 predicate places. [2021-10-15 20:06:31,678 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 200 flow [2021-10-15 20:06:31,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,679 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:31,679 INFO L254 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] [2021-10-15 20:06:31,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:06:31,680 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:31,681 INFO L82 PathProgramCache]: Analyzing trace with hash 748577935, now seen corresponding path program 1 times [2021-10-15 20:06:31,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:31,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923962063] [2021-10-15 20:06:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:31,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:31,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:31,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923962063] [2021-10-15 20:06:31,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923962063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:31,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:31,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:06:31,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042375661] [2021-10-15 20:06:31,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:06:31,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:06:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:06:31,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 213 [2021-10-15 20:06:31,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:31,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 213 [2021-10-15 20:06:31,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:31,851 INFO L129 PetriNetUnfolder]: 57/211 cut-off events. [2021-10-15 20:06:31,852 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-10-15 20:06:31,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 211 events. 57/211 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 369 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2021-10-15 20:06:31,856 INFO L132 encePairwiseOnDemand]: 205/213 looper letters, 13 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2021-10-15 20:06:31,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 252 flow [2021-10-15 20:06:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:06:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:06:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2021-10-15 20:06:31,861 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8732394366197183 [2021-10-15 20:06:31,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2021-10-15 20:06:31,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2021-10-15 20:06:31,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:31,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2021-10-15 20:06:31,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,901 INFO L186 Difference]: Start difference. First operand has 64 places, 81 transitions, 200 flow. Second operand 3 states and 558 transitions. [2021-10-15 20:06:31,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 252 flow [2021-10-15 20:06:31,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:06:31,908 INFO L242 Difference]: Finished difference. Result has 66 places, 85 transitions, 228 flow [2021-10-15 20:06:31,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=66, PETRI_TRANSITIONS=85} [2021-10-15 20:06:31,909 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -74 predicate places. [2021-10-15 20:06:31,909 INFO L470 AbstractCegarLoop]: Abstraction has has 66 places, 85 transitions, 228 flow [2021-10-15 20:06:31,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:31,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:31,910 INFO L254 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] [2021-10-15 20:06:31,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:06:31,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:31,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1335383949, now seen corresponding path program 1 times [2021-10-15 20:06:31,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:31,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359119992] [2021-10-15 20:06:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:31,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:32,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:32,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359119992] [2021-10-15 20:06:32,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359119992] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:32,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:32,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:06:32,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633701447] [2021-10-15 20:06:32,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:06:32,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:06:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:06:32,045 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 213 [2021-10-15 20:06:32,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 85 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:32,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 213 [2021-10-15 20:06:32,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:32,260 INFO L129 PetriNetUnfolder]: 143/523 cut-off events. [2021-10-15 20:06:32,260 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-10-15 20:06:32,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 523 events. 143/523 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2084 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 745. Up to 44 conditions per place. [2021-10-15 20:06:32,266 INFO L132 encePairwiseOnDemand]: 200/213 looper letters, 33 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2021-10-15 20:06:32,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 123 transitions, 448 flow [2021-10-15 20:06:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:06:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:06:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1418 transitions. [2021-10-15 20:06:32,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.739697443922796 [2021-10-15 20:06:32,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1418 transitions. [2021-10-15 20:06:32,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1418 transitions. [2021-10-15 20:06:32,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:32,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1418 transitions. [2021-10-15 20:06:32,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.55555555555554) internal successors, (1418), 9 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 213.0) internal successors, (2130), 10 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,293 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 213.0) internal successors, (2130), 10 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,293 INFO L186 Difference]: Start difference. First operand has 66 places, 85 transitions, 228 flow. Second operand 9 states and 1418 transitions. [2021-10-15 20:06:32,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 123 transitions, 448 flow [2021-10-15 20:06:32,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:06:32,303 INFO L242 Difference]: Finished difference. Result has 80 places, 103 transitions, 392 flow [2021-10-15 20:06:32,303 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2021-10-15 20:06:32,304 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -60 predicate places. [2021-10-15 20:06:32,304 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 392 flow [2021-10-15 20:06:32,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:32,306 INFO L254 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] [2021-10-15 20:06:32,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:06:32,307 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1094266678, now seen corresponding path program 1 times [2021-10-15 20:06:32,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:32,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680493572] [2021-10-15 20:06:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:32,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:32,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:32,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680493572] [2021-10-15 20:06:32,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680493572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:32,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:32,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:06:32,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031955936] [2021-10-15 20:06:32,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:06:32,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:06:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:06:32,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 213 [2021-10-15 20:06:32,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:32,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 213 [2021-10-15 20:06:32,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:32,591 INFO L129 PetriNetUnfolder]: 217/853 cut-off events. [2021-10-15 20:06:32,591 INFO L130 PetriNetUnfolder]: For 268/268 co-relation queries the response was YES. [2021-10-15 20:06:32,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 853 events. 217/853 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4462 event pairs, 0 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1387. Up to 85 conditions per place. [2021-10-15 20:06:32,599 INFO L132 encePairwiseOnDemand]: 201/213 looper letters, 17 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2021-10-15 20:06:32,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 470 flow [2021-10-15 20:06:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:06:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:06:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 975 transitions. [2021-10-15 20:06:32,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629107981220657 [2021-10-15 20:06:32,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 975 transitions. [2021-10-15 20:06:32,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 975 transitions. [2021-10-15 20:06:32,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:32,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 975 transitions. [2021-10-15 20:06:32,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,616 INFO L186 Difference]: Start difference. First operand has 80 places, 103 transitions, 392 flow. Second operand 6 states and 975 transitions. [2021-10-15 20:06:32,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 470 flow [2021-10-15 20:06:32,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 112 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:06:32,627 INFO L242 Difference]: Finished difference. Result has 89 places, 112 transitions, 475 flow [2021-10-15 20:06:32,627 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2021-10-15 20:06:32,628 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -51 predicate places. [2021-10-15 20:06:32,628 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 475 flow [2021-10-15 20:06:32,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:32,629 INFO L254 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] [2021-10-15 20:06:32,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:06:32,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:32,631 INFO L82 PathProgramCache]: Analyzing trace with hash 83149428, now seen corresponding path program 1 times [2021-10-15 20:06:32,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:32,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130671855] [2021-10-15 20:06:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:32,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:32,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:32,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130671855] [2021-10-15 20:06:32,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130671855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:32,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:32,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:06:32,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423100355] [2021-10-15 20:06:32,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:06:32,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:06:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:06:32,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 213 [2021-10-15 20:06:32,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:32,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 213 [2021-10-15 20:06:32,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:32,925 INFO L129 PetriNetUnfolder]: 182/727 cut-off events. [2021-10-15 20:06:32,926 INFO L130 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2021-10-15 20:06:32,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 727 events. 182/727 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3336 event pairs, 0 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 1277. Up to 66 conditions per place. [2021-10-15 20:06:32,934 INFO L132 encePairwiseOnDemand]: 202/213 looper letters, 13 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2021-10-15 20:06:32,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 547 flow [2021-10-15 20:06:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:06:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:06:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1179 transitions. [2021-10-15 20:06:32,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7907444668008048 [2021-10-15 20:06:32,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1179 transitions. [2021-10-15 20:06:32,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1179 transitions. [2021-10-15 20:06:32,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:32,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1179 transitions. [2021-10-15 20:06:32,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.42857142857142) internal successors, (1179), 7 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,957 INFO L186 Difference]: Start difference. First operand has 89 places, 112 transitions, 475 flow. Second operand 7 states and 1179 transitions. [2021-10-15 20:06:32,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 547 flow [2021-10-15 20:06:32,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 117 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:06:32,967 INFO L242 Difference]: Finished difference. Result has 98 places, 117 transitions, 551 flow [2021-10-15 20:06:32,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=551, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2021-10-15 20:06:32,968 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -42 predicate places. [2021-10-15 20:06:32,968 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 551 flow [2021-10-15 20:06:32,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:32,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:32,970 INFO L254 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] [2021-10-15 20:06:32,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:06:32,971 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:32,972 INFO L82 PathProgramCache]: Analyzing trace with hash 597879026, now seen corresponding path program 1 times [2021-10-15 20:06:32,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:32,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117359829] [2021-10-15 20:06:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:32,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:33,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:33,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117359829] [2021-10-15 20:06:33,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117359829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:33,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:33,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:06:33,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546965649] [2021-10-15 20:06:33,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:06:33,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:06:33,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:06:33,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 213 [2021-10-15 20:06:33,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 170.85714285714286) internal successors, (1196), 7 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:33,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:33,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 213 [2021-10-15 20:06:33,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:33,689 INFO L129 PetriNetUnfolder]: 232/1023 cut-off events. [2021-10-15 20:06:33,689 INFO L130 PetriNetUnfolder]: For 905/905 co-relation queries the response was YES. [2021-10-15 20:06:33,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1023 events. 232/1023 cut-off events. For 905/905 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4877 event pairs, 0 based on Foata normal form. 21/889 useless extension candidates. Maximal degree in co-relation 2070. Up to 93 conditions per place. [2021-10-15 20:06:33,701 INFO L132 encePairwiseOnDemand]: 201/213 looper letters, 29 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2021-10-15 20:06:33,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 135 transitions, 777 flow [2021-10-15 20:06:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 20:06:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 20:06:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1920 transitions. [2021-10-15 20:06:33,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8194622279129321 [2021-10-15 20:06:33,711 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1920 transitions. [2021-10-15 20:06:33,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1920 transitions. [2021-10-15 20:06:33,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:33,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1920 transitions. [2021-10-15 20:06:33,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 174.54545454545453) internal successors, (1920), 11 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:33,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:33,733 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:33,733 INFO L186 Difference]: Start difference. First operand has 98 places, 117 transitions, 551 flow. Second operand 11 states and 1920 transitions. [2021-10-15 20:06:33,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 135 transitions, 777 flow [2021-10-15 20:06:33,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 135 transitions, 770 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-15 20:06:33,747 INFO L242 Difference]: Finished difference. Result has 110 places, 125 transitions, 731 flow [2021-10-15 20:06:33,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=731, PETRI_PLACES=110, PETRI_TRANSITIONS=125} [2021-10-15 20:06:33,748 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -30 predicate places. [2021-10-15 20:06:33,748 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 125 transitions, 731 flow [2021-10-15 20:06:33,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.85714285714286) internal successors, (1196), 7 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:33,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:33,750 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-15 20:06:33,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:06:33,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:33,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1086391584, now seen corresponding path program 1 times [2021-10-15 20:06:33,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:33,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787856279] [2021-10-15 20:06:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:33,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:33,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:33,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787856279] [2021-10-15 20:06:33,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787856279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:06:33,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143454232] [2021-10-15 20:06:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:33,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:06:33,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:06:33,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:06:33,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:06:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:34,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 20:06:34,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:06:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143454232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:06:34,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:06:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-15 20:06:34,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829710194] [2021-10-15 20:06:34,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:06:34,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:06:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:06:34,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 213 [2021-10-15 20:06:34,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 125 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 156.125) internal successors, (1249), 8 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:34,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:34,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 213 [2021-10-15 20:06:34,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:34,933 INFO L129 PetriNetUnfolder]: 163/720 cut-off events. [2021-10-15 20:06:34,933 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-10-15 20:06:34,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 720 events. 163/720 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2774 event pairs, 0 based on Foata normal form. 24/620 useless extension candidates. Maximal degree in co-relation 1502. Up to 75 conditions per place. [2021-10-15 20:06:34,939 INFO L132 encePairwiseOnDemand]: 204/213 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2021-10-15 20:06:34,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 705 flow [2021-10-15 20:06:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:06:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:06:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1101 transitions. [2021-10-15 20:06:34,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.738430583501006 [2021-10-15 20:06:34,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1101 transitions. [2021-10-15 20:06:34,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1101 transitions. [2021-10-15 20:06:34,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:34,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1101 transitions. [2021-10-15 20:06:34,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.28571428571428) internal successors, (1101), 7 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:34,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:34,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:34,957 INFO L186 Difference]: Start difference. First operand has 110 places, 125 transitions, 731 flow. Second operand 7 states and 1101 transitions. [2021-10-15 20:06:34,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 705 flow [2021-10-15 20:06:34,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 114 transitions, 656 flow, removed 24 selfloop flow, removed 1 redundant places. [2021-10-15 20:06:34,967 INFO L242 Difference]: Finished difference. Result has 107 places, 0 transitions, 0 flow [2021-10-15 20:06:34,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=107, PETRI_TRANSITIONS=0} [2021-10-15 20:06:34,969 INFO L334 CegarLoopForPetriNet]: 140 programPoint places, -33 predicate places. [2021-10-15 20:06:34,969 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 0 transitions, 0 flow [2021-10-15 20:06:34,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.125) internal successors, (1249), 8 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:06:34,975 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:06:34,976 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:06:34,976 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:06:35,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:06:35,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-15 20:06:35,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:06:35,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:06:35 BoogieIcfgContainer [2021-10-15 20:06:35,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:06:35,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:06:35,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:06:35,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:06:35,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:29" (3/4) ... [2021-10-15 20:06:35,221 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:06:35,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 20:06:35,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 20:06:35,261 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 20:06:35,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 20:06:35,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 20:06:35,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:06:35,268 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:06:35,447 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:06:35,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:06:35,449 INFO L168 Benchmark]: Toolchain (without parser) took 7841.12 ms. Allocated memory was 98.6 MB in the beginning and 182.5 MB in the end (delta: 83.9 MB). Free memory was 57.2 MB in the beginning and 114.7 MB in the end (delta: -57.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,450 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:35,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.99 ms. Allocated memory is still 98.6 MB. Free memory was 57.0 MB in the beginning and 66.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.76 ms. Allocated memory is still 98.6 MB. Free memory was 66.0 MB in the beginning and 61.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,451 INFO L168 Benchmark]: Boogie Preprocessor took 59.55 ms. Allocated memory is still 98.6 MB. Free memory was 61.8 MB in the beginning and 58.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,452 INFO L168 Benchmark]: RCFGBuilder took 1526.77 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 58.8 MB in the beginning and 86.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,452 INFO L168 Benchmark]: TraceAbstraction took 5320.92 ms. Allocated memory was 134.2 MB in the beginning and 182.5 MB in the end (delta: 48.2 MB). Free memory was 86.0 MB in the beginning and 126.7 MB in the end (delta: -40.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,453 INFO L168 Benchmark]: Witness Printer took 231.25 ms. Allocated memory is still 182.5 MB. Free memory was 126.7 MB in the beginning and 114.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:35,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.99 ms. Allocated memory is still 98.6 MB. Free memory was 57.0 MB in the beginning and 66.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.76 ms. Allocated memory is still 98.6 MB. Free memory was 66.0 MB in the beginning and 61.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.55 ms. Allocated memory is still 98.6 MB. Free memory was 61.8 MB in the beginning and 58.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1526.77 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 58.8 MB in the beginning and 86.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5320.92 ms. Allocated memory was 134.2 MB in the beginning and 182.5 MB in the end (delta: 48.2 MB). Free memory was 86.0 MB in the beginning and 126.7 MB in the end (delta: -40.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Witness Printer took 231.25 ms. Allocated memory is still 182.5 MB. Free memory was 126.7 MB in the beginning and 114.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5240.7ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 2510.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 117.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 76 SDtfs, 174 SDslu, 109 SDs, 0 SdLazy, 247 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 730.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 376.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=731occurred in iteration=9, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 144.8ms SsaConstructionTime, 662.9ms SatisfiabilityAnalysisTime, 1190.1ms InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 824 SizeOfPredicates, 3 NumberOfNonLiveVariables, 459 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 26/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 20:06:35,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d55254-92a5-4c45-bff3-b64022ba776c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...