./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN --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 a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:48:24,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:48:24,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:48:24,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:48:24,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:48:24,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:48:24,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:48:24,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:48:24,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:48:24,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:48:24,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:48:24,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:48:24,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:48:24,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:48:24,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:48:24,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:48:24,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:48:24,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:48:24,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:48:24,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:48:24,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:48:24,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:48:24,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:48:24,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:48:24,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:48:24,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:48:24,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:48:24,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:48:24,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:48:24,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:48:24,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:48:24,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:48:24,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:48:24,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:48:24,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:48:24,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:48:24,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:48:24,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:48:24,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:48:24,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:48:24,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:48:24,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:48:24,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:48:24,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:48:24,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:48:24,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:48:24,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:48:24,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:48:24,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:48:24,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:48:24,296 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:48:24,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:48:24,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:48:24,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:48:24,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:48:24,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:48:24,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:48:24,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:48:24,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:48:24,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:48:24,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:48:24,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:48:24,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:48:24,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:48:24,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:48:24,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:48:24,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:24,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:48:24,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:48:24,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:48:24,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:48:24,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:48:24,301 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:48:24,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:48:24,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:48:24,302 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_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 [2022-11-20 10:48:24,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:48:24,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:48:24,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:48:24,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:48:24,665 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:48:24,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-11-20 10:48:27,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:48:28,065 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:48:28,066 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2022-11-20 10:48:28,080 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/data/26ba3c43d/1b206fa5d1f64ff3b8ed0fc4a9b173a8/FLAG76ed41402 [2022-11-20 10:48:28,094 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/data/26ba3c43d/1b206fa5d1f64ff3b8ed0fc4a9b173a8 [2022-11-20 10:48:28,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:48:28,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:48:28,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:28,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:48:28,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:48:28,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264bd181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28, skipping insertion in model container [2022-11-20 10:48:28,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:48:28,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:48:28,398 WARN L237 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_2463cd72-2996-49fa-8047-7855edf8cbb4/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-11-20 10:48:28,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:28,670 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:48:28,684 WARN L237 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_2463cd72-2996-49fa-8047-7855edf8cbb4/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2022-11-20 10:48:28,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:28,783 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:48:28,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28 WrapperNode [2022-11-20 10:48:28,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:28,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:28,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:48:28,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:48:28,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,851 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2022-11-20 10:48:28,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:28,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:48:28,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:48:28,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:48:28,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:48:28,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:48:28,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:48:28,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:48:28,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (1/1) ... [2022-11-20 10:48:28,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:28,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:48:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:48:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:48:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 10:48:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 10:48:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:48:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:48:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:48:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:48:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:48:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:48:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:48:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:48:28,967 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:48:29,092 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:48:29,094 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:48:29,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:48:29,392 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:48:29,392 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:48:29,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:29 BoogieIcfgContainer [2022-11-20 10:48:29,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:48:29,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:48:29,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:48:29,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:48:29,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:48:28" (1/3) ... [2022-11-20 10:48:29,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a70458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:29, skipping insertion in model container [2022-11-20 10:48:29,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:28" (2/3) ... [2022-11-20 10:48:29,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a70458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:29, skipping insertion in model container [2022-11-20 10:48:29,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:29" (3/3) ... [2022-11-20 10:48:29,420 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2022-11-20 10:48:29,428 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:48:29,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:48:29,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 10:48:29,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:48:29,564 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 10:48:29,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 111 transitions, 230 flow [2022-11-20 10:48:29,719 INFO L130 PetriNetUnfolder]: 3/110 cut-off events. [2022-11-20 10:48:29,719 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:48:29,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 3/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-20 10:48:29,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 111 transitions, 230 flow [2022-11-20 10:48:29,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 94 transitions, 191 flow [2022-11-20 10:48:29,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:29,767 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@68a955af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:29,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 10:48:29,810 INFO L130 PetriNetUnfolder]: 0/64 cut-off events. [2022-11-20 10:48:29,810 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:48:29,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:29,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:29,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -209547896, now seen corresponding path program 1 times [2022-11-20 10:48:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:29,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31164655] [2022-11-20 10:48:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:30,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31164655] [2022-11-20 10:48:30,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31164655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:30,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:30,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:48:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938217115] [2022-11-20 10:48:30,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:48:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:48:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:48:30,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 111 [2022-11-20 10:48:30,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:30,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:30,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 111 [2022-11-20 10:48:30,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:30,914 INFO L130 PetriNetUnfolder]: 62/353 cut-off events. [2022-11-20 10:48:30,915 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:48:30,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 353 events. 62/353 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1568 event pairs, 14 based on Foata normal form. 8/352 useless extension candidates. Maximal degree in co-relation 460. Up to 60 conditions per place. [2022-11-20 10:48:30,923 INFO L137 encePairwiseOnDemand]: 99/111 looper letters, 32 selfloop transitions, 17 changer transitions 0/119 dead transitions. [2022-11-20 10:48:30,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 339 flow [2022-11-20 10:48:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:48:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:48:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 801 transitions. [2022-11-20 10:48:30,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8018018018018018 [2022-11-20 10:48:30,945 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 801 transitions. [2022-11-20 10:48:30,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 801 transitions. [2022-11-20 10:48:30,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:30,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 801 transitions. [2022-11-20 10:48:30,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:30,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:30,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:30,967 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 191 flow. Second operand 9 states and 801 transitions. [2022-11-20 10:48:30,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 339 flow [2022-11-20 10:48:30,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 119 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:48:30,975 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 270 flow [2022-11-20 10:48:30,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2022-11-20 10:48:30,981 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 9 predicate places. [2022-11-20 10:48:30,982 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 270 flow [2022-11-20 10:48:30,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:30,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:30,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:30,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:48:30,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 330090460, now seen corresponding path program 1 times [2022-11-20 10:48:30,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:30,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530384339] [2022-11-20 10:48:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:31,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530384339] [2022-11-20 10:48:31,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530384339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:31,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:31,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:48:31,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541617996] [2022-11-20 10:48:31,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:31,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:48:31,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:31,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:48:31,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:48:31,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 111 [2022-11-20 10:48:31,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:31,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:31,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 111 [2022-11-20 10:48:31,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:31,504 INFO L130 PetriNetUnfolder]: 68/379 cut-off events. [2022-11-20 10:48:31,504 INFO L131 PetriNetUnfolder]: For 62/64 co-relation queries the response was YES. [2022-11-20 10:48:31,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 379 events. 68/379 cut-off events. For 62/64 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1799 event pairs, 20 based on Foata normal form. 7/383 useless extension candidates. Maximal degree in co-relation 597. Up to 72 conditions per place. [2022-11-20 10:48:31,515 INFO L137 encePairwiseOnDemand]: 101/111 looper letters, 32 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2022-11-20 10:48:31,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 125 transitions, 448 flow [2022-11-20 10:48:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:48:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:48:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 797 transitions. [2022-11-20 10:48:31,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7977977977977978 [2022-11-20 10:48:31,519 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 797 transitions. [2022-11-20 10:48:31,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 797 transitions. [2022-11-20 10:48:31,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:31,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 797 transitions. [2022-11-20 10:48:31,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:31,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:31,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:31,525 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 270 flow. Second operand 9 states and 797 transitions. [2022-11-20 10:48:31,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 125 transitions, 448 flow [2022-11-20 10:48:31,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:48:31,533 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 390 flow [2022-11-20 10:48:31,533 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=390, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2022-11-20 10:48:31,534 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 20 predicate places. [2022-11-20 10:48:31,534 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 390 flow [2022-11-20 10:48:31,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:31,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:31,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:31,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:48:31,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1959807450, now seen corresponding path program 1 times [2022-11-20 10:48:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:31,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053982389] [2022-11-20 10:48:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:31,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053982389] [2022-11-20 10:48:31,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053982389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:31,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:31,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:48:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312903310] [2022-11-20 10:48:31,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:31,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:48:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:48:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:48:31,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2022-11-20 10:48:31,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 390 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:31,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:31,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2022-11-20 10:48:31,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:32,098 INFO L130 PetriNetUnfolder]: 90/492 cut-off events. [2022-11-20 10:48:32,098 INFO L131 PetriNetUnfolder]: For 242/244 co-relation queries the response was YES. [2022-11-20 10:48:32,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 492 events. 90/492 cut-off events. For 242/244 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2550 event pairs, 0 based on Foata normal form. 12/502 useless extension candidates. Maximal degree in co-relation 893. Up to 32 conditions per place. [2022-11-20 10:48:32,101 INFO L137 encePairwiseOnDemand]: 94/111 looper letters, 45 selfloop transitions, 60 changer transitions 15/189 dead transitions. [2022-11-20 10:48:32,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 189 transitions, 992 flow [2022-11-20 10:48:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:48:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 10:48:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1670 transitions. [2022-11-20 10:48:32,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7918444760550024 [2022-11-20 10:48:32,107 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1670 transitions. [2022-11-20 10:48:32,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1670 transitions. [2022-11-20 10:48:32,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:32,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1670 transitions. [2022-11-20 10:48:32,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 87.89473684210526) internal successors, (1670), 19 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 111.0) internal successors, (2220), 20 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,119 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 111.0) internal successors, (2220), 20 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,120 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 390 flow. Second operand 19 states and 1670 transitions. [2022-11-20 10:48:32,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 189 transitions, 992 flow [2022-11-20 10:48:32,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 189 transitions, 988 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-20 10:48:32,128 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 786 flow [2022-11-20 10:48:32,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=786, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2022-11-20 10:48:32,129 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 49 predicate places. [2022-11-20 10:48:32,129 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 786 flow [2022-11-20 10:48:32,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:32,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:32,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:48:32,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1329214009, now seen corresponding path program 1 times [2022-11-20 10:48:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:32,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421504637] [2022-11-20 10:48:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:32,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:32,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421504637] [2022-11-20 10:48:32,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421504637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:32,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:32,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:32,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820761869] [2022-11-20 10:48:32,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:32,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:32,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:32,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 111 [2022-11-20 10:48:32,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:32,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 111 [2022-11-20 10:48:32,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:32,521 INFO L130 PetriNetUnfolder]: 24/289 cut-off events. [2022-11-20 10:48:32,522 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-20 10:48:32,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 289 events. 24/289 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1001 event pairs, 11 based on Foata normal form. 10/299 useless extension candidates. Maximal degree in co-relation 582. Up to 49 conditions per place. [2022-11-20 10:48:32,524 INFO L137 encePairwiseOnDemand]: 101/111 looper letters, 19 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2022-11-20 10:48:32,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 116 transitions, 529 flow [2022-11-20 10:48:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:48:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:48:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2022-11-20 10:48:32,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2022-11-20 10:48:32,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2022-11-20 10:48:32,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2022-11-20 10:48:32,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:32,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2022-11-20 10:48:32,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,529 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 786 flow. Second operand 5 states and 418 transitions. [2022-11-20 10:48:32,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 116 transitions, 529 flow [2022-11-20 10:48:32,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 116 transitions, 429 flow, removed 19 selfloop flow, removed 19 redundant places. [2022-11-20 10:48:32,535 INFO L231 Difference]: Finished difference. Result has 124 places, 113 transitions, 397 flow [2022-11-20 10:48:32,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=113} [2022-11-20 10:48:32,537 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 28 predicate places. [2022-11-20 10:48:32,537 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 113 transitions, 397 flow [2022-11-20 10:48:32,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:32,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:32,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:48:32,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:32,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1147263838, now seen corresponding path program 1 times [2022-11-20 10:48:32,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:32,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578201561] [2022-11-20 10:48:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:32,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578201561] [2022-11-20 10:48:32,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578201561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:32,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:32,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:48:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309718347] [2022-11-20 10:48:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:32,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:48:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:48:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:48:32,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 111 [2022-11-20 10:48:32,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 113 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:32,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 111 [2022-11-20 10:48:32,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:33,062 INFO L130 PetriNetUnfolder]: 6/206 cut-off events. [2022-11-20 10:48:33,062 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-20 10:48:33,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 206 events. 6/206 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 556 event pairs, 1 based on Foata normal form. 2/207 useless extension candidates. Maximal degree in co-relation 364. Up to 17 conditions per place. [2022-11-20 10:48:33,063 INFO L137 encePairwiseOnDemand]: 95/111 looper letters, 19 selfloop transitions, 34 changer transitions 0/122 dead transitions. [2022-11-20 10:48:33,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 122 transitions, 523 flow [2022-11-20 10:48:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:48:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 10:48:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1917 transitions. [2022-11-20 10:48:33,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7508813160987075 [2022-11-20 10:48:33,070 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1917 transitions. [2022-11-20 10:48:33,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1917 transitions. [2022-11-20 10:48:33,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:33,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1917 transitions. [2022-11-20 10:48:33,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 83.34782608695652) internal successors, (1917), 23 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 111.0) internal successors, (2664), 24 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,084 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 111.0) internal successors, (2664), 24 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,085 INFO L175 Difference]: Start difference. First operand has 124 places, 113 transitions, 397 flow. Second operand 23 states and 1917 transitions. [2022-11-20 10:48:33,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 122 transitions, 523 flow [2022-11-20 10:48:33,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 122 transitions, 503 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:48:33,091 INFO L231 Difference]: Finished difference. Result has 139 places, 115 transitions, 445 flow [2022-11-20 10:48:33,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=445, PETRI_PLACES=139, PETRI_TRANSITIONS=115} [2022-11-20 10:48:33,094 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 43 predicate places. [2022-11-20 10:48:33,094 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 115 transitions, 445 flow [2022-11-20 10:48:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:33,095 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:33,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:48:33,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash -735792319, now seen corresponding path program 1 times [2022-11-20 10:48:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:33,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132755074] [2022-11-20 10:48:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:33,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132755074] [2022-11-20 10:48:33,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132755074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:33,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:33,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:48:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876619199] [2022-11-20 10:48:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:48:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:48:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:48:33,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2022-11-20 10:48:33,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 115 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:33,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2022-11-20 10:48:33,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:33,464 INFO L130 PetriNetUnfolder]: 7/218 cut-off events. [2022-11-20 10:48:33,464 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-11-20 10:48:33,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 218 events. 7/218 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 654 event pairs, 1 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 409. Up to 20 conditions per place. [2022-11-20 10:48:33,466 INFO L137 encePairwiseOnDemand]: 96/111 looper letters, 23 selfloop transitions, 27 changer transitions 0/122 dead transitions. [2022-11-20 10:48:33,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 122 transitions, 565 flow [2022-11-20 10:48:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:48:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:48:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1277 transitions. [2022-11-20 10:48:33,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.766966966966967 [2022-11-20 10:48:33,470 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1277 transitions. [2022-11-20 10:48:33,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1277 transitions. [2022-11-20 10:48:33,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:33,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1277 transitions. [2022-11-20 10:48:33,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 85.13333333333334) internal successors, (1277), 15 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 111.0) internal successors, (1776), 16 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,478 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 111.0) internal successors, (1776), 16 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,478 INFO L175 Difference]: Start difference. First operand has 139 places, 115 transitions, 445 flow. Second operand 15 states and 1277 transitions. [2022-11-20 10:48:33,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 122 transitions, 565 flow [2022-11-20 10:48:33,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 122 transitions, 510 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-11-20 10:48:33,482 INFO L231 Difference]: Finished difference. Result has 141 places, 118 transitions, 472 flow [2022-11-20 10:48:33,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=472, PETRI_PLACES=141, PETRI_TRANSITIONS=118} [2022-11-20 10:48:33,485 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 45 predicate places. [2022-11-20 10:48:33,485 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 118 transitions, 472 flow [2022-11-20 10:48:33,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:33,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:48:33,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:33,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:33,487 INFO L85 PathProgramCache]: Analyzing trace with hash 828029058, now seen corresponding path program 1 times [2022-11-20 10:48:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:33,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143544243] [2022-11-20 10:48:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:33,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:33,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143544243] [2022-11-20 10:48:33,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143544243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:33,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:33,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:48:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548860843] [2022-11-20 10:48:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:48:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:48:33,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:48:33,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 111 [2022-11-20 10:48:33,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 118 transitions, 472 flow. Second operand has 9 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:33,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 111 [2022-11-20 10:48:33,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:34,006 INFO L130 PetriNetUnfolder]: 7/214 cut-off events. [2022-11-20 10:48:34,006 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2022-11-20 10:48:34,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 214 events. 7/214 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 626 event pairs, 1 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 419. Up to 19 conditions per place. [2022-11-20 10:48:34,008 INFO L137 encePairwiseOnDemand]: 95/111 looper letters, 17 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2022-11-20 10:48:34,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 120 transitions, 576 flow [2022-11-20 10:48:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:48:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:48:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1748 transitions. [2022-11-20 10:48:34,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7498927498927499 [2022-11-20 10:48:34,013 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1748 transitions. [2022-11-20 10:48:34,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1748 transitions. [2022-11-20 10:48:34,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:34,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1748 transitions. [2022-11-20 10:48:34,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 83.23809523809524) internal successors, (1748), 21 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 111.0) internal successors, (2442), 22 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,026 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 111.0) internal successors, (2442), 22 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,026 INFO L175 Difference]: Start difference. First operand has 141 places, 118 transitions, 472 flow. Second operand 21 states and 1748 transitions. [2022-11-20 10:48:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 120 transitions, 576 flow [2022-11-20 10:48:34,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 120 transitions, 516 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-11-20 10:48:34,030 INFO L231 Difference]: Finished difference. Result has 147 places, 116 transitions, 474 flow [2022-11-20 10:48:34,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=474, PETRI_PLACES=147, PETRI_TRANSITIONS=116} [2022-11-20 10:48:34,031 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 51 predicate places. [2022-11-20 10:48:34,031 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 116 transitions, 474 flow [2022-11-20 10:48:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:34,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:48:34,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1449404882, now seen corresponding path program 1 times [2022-11-20 10:48:34,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:34,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492037873] [2022-11-20 10:48:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:34,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492037873] [2022-11-20 10:48:34,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492037873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:34,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:34,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:48:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65557825] [2022-11-20 10:48:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:34,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:48:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:48:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:34,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 111 [2022-11-20 10:48:34,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 116 transitions, 474 flow. Second operand has 8 states, 8 states have (on average 74.375) internal successors, (595), 8 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:34,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 111 [2022-11-20 10:48:34,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:34,571 INFO L130 PetriNetUnfolder]: 12/205 cut-off events. [2022-11-20 10:48:34,571 INFO L131 PetriNetUnfolder]: For 96/98 co-relation queries the response was YES. [2022-11-20 10:48:34,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 205 events. 12/205 cut-off events. For 96/98 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 1 based on Foata normal form. 13/218 useless extension candidates. Maximal degree in co-relation 387. Up to 37 conditions per place. [2022-11-20 10:48:34,572 INFO L137 encePairwiseOnDemand]: 105/111 looper letters, 28 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2022-11-20 10:48:34,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 116 transitions, 528 flow [2022-11-20 10:48:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:48:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2022-11-20 10:48:34,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6921921921921922 [2022-11-20 10:48:34,575 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 461 transitions. [2022-11-20 10:48:34,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 461 transitions. [2022-11-20 10:48:34,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:34,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 461 transitions. [2022-11-20 10:48:34,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,579 INFO L175 Difference]: Start difference. First operand has 147 places, 116 transitions, 474 flow. Second operand 6 states and 461 transitions. [2022-11-20 10:48:34,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 116 transitions, 528 flow [2022-11-20 10:48:34,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 116 transitions, 455 flow, removed 3 selfloop flow, removed 21 redundant places. [2022-11-20 10:48:34,582 INFO L231 Difference]: Finished difference. Result has 131 places, 113 transitions, 387 flow [2022-11-20 10:48:34,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=131, PETRI_TRANSITIONS=113} [2022-11-20 10:48:34,583 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 35 predicate places. [2022-11-20 10:48:34,584 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 113 transitions, 387 flow [2022-11-20 10:48:34,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.375) internal successors, (595), 8 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:34,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:34,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:48:34,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:48:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash 131069529, now seen corresponding path program 1 times [2022-11-20 10:48:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:34,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539355228] [2022-11-20 10:48:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:34,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:34,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539355228] [2022-11-20 10:48:34,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539355228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:34,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:34,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:48:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353947261] [2022-11-20 10:48:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:34,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:48:34,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:48:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:34,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 111 [2022-11-20 10:48:34,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 113 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 83.5) internal successors, (668), 8 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:34,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 111 [2022-11-20 10:48:34,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:35,053 INFO L130 PetriNetUnfolder]: 4/177 cut-off events. [2022-11-20 10:48:35,054 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-20 10:48:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 177 events. 4/177 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 388 event pairs, 1 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 308. Up to 21 conditions per place. [2022-11-20 10:48:35,055 INFO L137 encePairwiseOnDemand]: 97/111 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2022-11-20 10:48:35,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 112 transitions, 475 flow [2022-11-20 10:48:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:48:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:48:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1330 transitions. [2022-11-20 10:48:35,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7488738738738738 [2022-11-20 10:48:35,058 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1330 transitions. [2022-11-20 10:48:35,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1330 transitions. [2022-11-20 10:48:35,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:35,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1330 transitions. [2022-11-20 10:48:35,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 83.125) internal successors, (1330), 16 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,066 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,066 INFO L175 Difference]: Start difference. First operand has 131 places, 113 transitions, 387 flow. Second operand 16 states and 1330 transitions. [2022-11-20 10:48:35,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 112 transitions, 475 flow [2022-11-20 10:48:35,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 112 transitions, 457 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:48:35,069 INFO L231 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2022-11-20 10:48:35,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2022-11-20 10:48:35,070 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 43 predicate places. [2022-11-20 10:48:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2022-11-20 10:48:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.5) internal successors, (668), 8 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-20 10:48:35,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-20 10:48:35,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-20 10:48:35,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-20 10:48:35,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:48:35,075 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:35,078 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:48:35,078 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:48:35,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:48:35 BasicIcfg [2022-11-20 10:48:35,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:48:35,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:48:35,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:48:35,084 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:48:35,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:29" (3/4) ... [2022-11-20 10:48:35,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:48:35,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-11-20 10:48:35,098 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 10:48:35,098 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:48:35,098 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:48:35,098 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:48:35,130 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:48:35,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:48:35,131 INFO L158 Benchmark]: Toolchain (without parser) took 7033.11ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 121.6MB in the beginning and 66.7MB in the end (delta: 55.0MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,131 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:48:35,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.69ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 101.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.84ms. Allocated memory is still 155.2MB. Free memory was 101.8MB in the beginning and 99.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,132 INFO L158 Benchmark]: Boogie Preprocessor took 37.95ms. Allocated memory is still 155.2MB. Free memory was 99.7MB in the beginning and 98.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,132 INFO L158 Benchmark]: RCFGBuilder took 499.16ms. Allocated memory is still 155.2MB. Free memory was 98.2MB in the beginning and 83.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,133 INFO L158 Benchmark]: TraceAbstraction took 5685.80ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 83.0MB in the beginning and 69.8MB in the end (delta: 13.2MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,133 INFO L158 Benchmark]: Witness Printer took 47.25ms. Allocated memory is still 201.3MB. Free memory was 69.8MB in the beginning and 66.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:48:35,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.69ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 101.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.84ms. Allocated memory is still 155.2MB. Free memory was 101.8MB in the beginning and 99.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.95ms. Allocated memory is still 155.2MB. Free memory was 99.7MB in the beginning and 98.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.16ms. Allocated memory is still 155.2MB. Free memory was 98.2MB in the beginning and 83.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5685.80ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 83.0MB in the beginning and 69.8MB in the end (delta: 13.2MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. * Witness Printer took 47.25ms. Allocated memory is still 201.3MB. Free memory was 69.8MB in the beginning and 66.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 129 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 507 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 507 mSDsluCounter, 439 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 318 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 730 IncrementalHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 121 mSDtfsCounter, 730 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=786occurred in iteration=3, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 586 ConstructedInterpolants, 0 QuantifiedInterpolants, 2089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! [2022-11-20 10:48:35,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2463cd72-2996-49fa-8047-7855edf8cbb4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE