./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --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_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/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_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/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_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/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 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 --- 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 10:44:08,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:44:08,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:44:08,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:44:08,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:44:08,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:44:08,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:44:08,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:44:08,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:44:08,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:44:08,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:44:08,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:44:08,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:44:08,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:44:08,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:44:08,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:44:08,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:44:08,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:44:08,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:44:08,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:44:08,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:44:08,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:44:08,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:44:08,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:44:08,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:44:08,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:44:08,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:44:08,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:44:08,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:44:08,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:44:08,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:44:08,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:44:08,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:44:08,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:44:08,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:44:08,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:44:08,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:44:08,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:44:08,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:44:08,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:44:08,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:44:08,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:44:08,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:44:08,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:44:08,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:44:08,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:44:08,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:44:08,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:44:08,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:44:08,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:44:08,234 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:44:08,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:44:08,236 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:44:08,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:44:08,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:44:08,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:44:08,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:44:08,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:44:08,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:44:08,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:44:08,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:44:08,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:44:08,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:44:08,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:44:08,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:44:08,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:44:08,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:08,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:44:08,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:44:08,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:44:08,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:44:08,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:44:08,245 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:44:08,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:44:08,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:44:08,246 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_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 [2022-11-20 10:44:08,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:44:08,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:44:08,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:44:08,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:44:08,633 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:44:08,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2022-11-20 10:44:12,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:44:12,322 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:44:12,323 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2022-11-20 10:44:12,330 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/data/f548c4f92/b6c259d390474f808933fb0436a0df6c/FLAG2462320c6 [2022-11-20 10:44:12,345 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/data/f548c4f92/b6c259d390474f808933fb0436a0df6c [2022-11-20 10:44:12,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:44:12,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:44:12,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:12,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:44:12,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:44:12,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433a6272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12, skipping insertion in model container [2022-11-20 10:44:12,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:44:12,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:44:12,589 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_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2022-11-20 10:44:12,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:12,607 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:44:12,639 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_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2022-11-20 10:44:12,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:12,658 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:44:12,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12 WrapperNode [2022-11-20 10:44:12,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:12,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:12,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:44:12,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:44:12,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,740 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-11-20 10:44:12,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:12,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:44:12,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:44:12,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:44:12,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,811 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:44:12,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:44:12,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:44:12,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:44:12,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (1/1) ... [2022-11-20 10:44:12,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:12,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:44:12,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:44:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:44:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:44:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:44:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:44:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:44:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:44:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:44:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:44:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:44:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:44:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 10:44:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 10:44:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:44:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-20 10:44:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-20 10:44:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-20 10:44:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-20 10:44:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:44:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:44:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:44:12,923 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 10:44:13,113 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:44:13,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:44:13,544 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:44:13,555 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:44:13,555 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:44:13,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:13 BoogieIcfgContainer [2022-11-20 10:44:13,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:44:13,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:44:13,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:44:13,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:44:13,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:12" (1/3) ... [2022-11-20 10:44:13,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410123ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:13, skipping insertion in model container [2022-11-20 10:44:13,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:12" (2/3) ... [2022-11-20 10:44:13,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410123ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:13, skipping insertion in model container [2022-11-20 10:44:13,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:13" (3/3) ... [2022-11-20 10:44:13,571 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2022-11-20 10:44:13,590 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:44:13,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:44:13,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:44:13,605 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:44:13,789 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-20 10:44:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2022-11-20 10:44:13,976 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-11-20 10:44:13,976 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:44:13,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-11-20 10:44:13,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2022-11-20 10:44:13,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 146 transitions, 328 flow [2022-11-20 10:44:14,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:44:14,014 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;@20a6551e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:44:14,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 10:44:14,072 INFO L130 PetriNetUnfolder]: 14/145 cut-off events. [2022-11-20 10:44:14,072 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:44:14,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:14,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:14,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1725329073, now seen corresponding path program 1 times [2022-11-20 10:44:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:14,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810720078] [2022-11-20 10:44:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:14,617 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 10:44:14,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:14,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810720078] [2022-11-20 10:44:14,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810720078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:14,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:14,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:44:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106952610] [2022-11-20 10:44:14,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:44:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:44:14,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:44:14,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 169 [2022-11-20 10:44:14,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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 10:44:14,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:14,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 169 [2022-11-20 10:44:14,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:14,780 INFO L130 PetriNetUnfolder]: 6/138 cut-off events. [2022-11-20 10:44:14,780 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-20 10:44:14,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 138 events. 6/138 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 38/168 useless extension candidates. Maximal degree in co-relation 119. Up to 13 conditions per place. [2022-11-20 10:44:14,784 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 12 selfloop transitions, 0 changer transitions 2/138 dead transitions. [2022-11-20 10:44:14,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 138 transitions, 336 flow [2022-11-20 10:44:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:44:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:44:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 316 transitions. [2022-11-20 10:44:14,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9349112426035503 [2022-11-20 10:44:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 316 transitions. [2022-11-20 10:44:14,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 316 transitions. [2022-11-20 10:44:14,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:14,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 316 transitions. [2022-11-20 10:44:14,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 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 10:44:14,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 10:44:14,901 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 10:44:14,903 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 328 flow. Second operand 2 states and 316 transitions. [2022-11-20 10:44:14,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 138 transitions, 336 flow [2022-11-20 10:44:14,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 312 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 10:44:14,939 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 284 flow [2022-11-20 10:44:14,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2022-11-20 10:44:14,952 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -11 predicate places. [2022-11-20 10:44:14,953 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 284 flow [2022-11-20 10:44:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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 10:44:14,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:14,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:14,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:44:14,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash -666427091, now seen corresponding path program 1 times [2022-11-20 10:44:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:14,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348545767] [2022-11-20 10:44:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:16,861 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 10:44:16,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:16,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348545767] [2022-11-20 10:44:16,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348545767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:16,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:16,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:44:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537097791] [2022-11-20 10:44:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:16,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:44:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:44:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:44:16,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 169 [2022-11-20 10:44:16,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 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 10:44:16,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:16,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 169 [2022-11-20 10:44:16,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:17,412 INFO L130 PetriNetUnfolder]: 187/575 cut-off events. [2022-11-20 10:44:17,421 INFO L131 PetriNetUnfolder]: For 16/22 co-relation queries the response was YES. [2022-11-20 10:44:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 575 events. 187/575 cut-off events. For 16/22 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2217 event pairs, 97 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 956. Up to 184 conditions per place. [2022-11-20 10:44:17,439 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 41 selfloop transitions, 5 changer transitions 4/156 dead transitions. [2022-11-20 10:44:17,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 156 transitions, 435 flow [2022-11-20 10:44:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:44:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:44:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-11-20 10:44:17,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8005071851225697 [2022-11-20 10:44:17,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-11-20 10:44:17,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-11-20 10:44:17,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:17,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-11-20 10:44:17,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 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 10:44:17,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:17,459 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:17,460 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 284 flow. Second operand 7 states and 947 transitions. [2022-11-20 10:44:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 156 transitions, 435 flow [2022-11-20 10:44:17,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:44:17,470 INFO L231 Difference]: Finished difference. Result has 147 places, 138 transitions, 311 flow [2022-11-20 10:44:17,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=147, PETRI_TRANSITIONS=138} [2022-11-20 10:44:17,471 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-11-20 10:44:17,471 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 138 transitions, 311 flow [2022-11-20 10:44:17,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 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 10:44:17,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:17,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:17,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:44:17,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash 971627543, now seen corresponding path program 1 times [2022-11-20 10:44:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:17,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447541093] [2022-11-20 10:44:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:18,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:18,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447541093] [2022-11-20 10:44:18,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447541093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:18,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:18,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:44:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68879209] [2022-11-20 10:44:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:44:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:44:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:18,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:44:18,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 138 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 10:44:18,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:18,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:44:18,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:23,208 INFO L130 PetriNetUnfolder]: 20438/28564 cut-off events. [2022-11-20 10:44:23,209 INFO L131 PetriNetUnfolder]: For 2929/3186 co-relation queries the response was YES. [2022-11-20 10:44:23,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58497 conditions, 28564 events. 20438/28564 cut-off events. For 2929/3186 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 168579 event pairs, 1500 based on Foata normal form. 2/20293 useless extension candidates. Maximal degree in co-relation 58490. Up to 19304 conditions per place. [2022-11-20 10:44:23,538 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 80 selfloop transitions, 17 changer transitions 7/188 dead transitions. [2022-11-20 10:44:23,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 188 transitions, 647 flow [2022-11-20 10:44:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:44:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:44:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-11-20 10:44:23,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-11-20 10:44:23,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-11-20 10:44:23,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-11-20 10:44:23,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:23,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-11-20 10:44:23,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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 10:44:23,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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 10:44:23,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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 10:44:23,552 INFO L175 Difference]: Start difference. First operand has 147 places, 138 transitions, 311 flow. Second operand 6 states and 740 transitions. [2022-11-20 10:44:23,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 188 transitions, 647 flow [2022-11-20 10:44:23,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 632 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 10:44:23,563 INFO L231 Difference]: Finished difference. Result has 147 places, 152 transitions, 407 flow [2022-11-20 10:44:23,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=147, PETRI_TRANSITIONS=152} [2022-11-20 10:44:23,566 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-11-20 10:44:23,567 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 152 transitions, 407 flow [2022-11-20 10:44:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 10:44:23,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:23,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:23,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:44:23,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -500549281, now seen corresponding path program 2 times [2022-11-20 10:44:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:23,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767346488] [2022-11-20 10:44:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:24,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767346488] [2022-11-20 10:44:24,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767346488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:24,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:24,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:44:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882868739] [2022-11-20 10:44:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:24,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:44:24,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:44:24,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:24,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-11-20 10:44:24,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 152 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 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 10:44:24,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:24,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-11-20 10:44:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:29,806 INFO L130 PetriNetUnfolder]: 21431/32394 cut-off events. [2022-11-20 10:44:29,806 INFO L131 PetriNetUnfolder]: For 14160/14391 co-relation queries the response was YES. [2022-11-20 10:44:29,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71766 conditions, 32394 events. 21431/32394 cut-off events. For 14160/14391 co-relation queries the response was YES. Maximal size of possible extension queue 1718. Compared 226030 event pairs, 11659 based on Foata normal form. 634/24757 useless extension candidates. Maximal degree in co-relation 71759. Up to 7077 conditions per place. [2022-11-20 10:44:30,192 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 96 selfloop transitions, 16 changer transitions 4/220 dead transitions. [2022-11-20 10:44:30,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 220 transitions, 828 flow [2022-11-20 10:44:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:44:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:44:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2022-11-20 10:44:30,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920540997464074 [2022-11-20 10:44:30,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2022-11-20 10:44:30,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2022-11-20 10:44:30,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:30,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2022-11-20 10:44:30,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 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 10:44:30,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:30,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:30,211 INFO L175 Difference]: Start difference. First operand has 147 places, 152 transitions, 407 flow. Second operand 7 states and 937 transitions. [2022-11-20 10:44:30,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 220 transitions, 828 flow [2022-11-20 10:44:30,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 220 transitions, 824 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:44:30,237 INFO L231 Difference]: Finished difference. Result has 155 places, 156 transitions, 490 flow [2022-11-20 10:44:30,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=155, PETRI_TRANSITIONS=156} [2022-11-20 10:44:30,239 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 4 predicate places. [2022-11-20 10:44:30,239 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 490 flow [2022-11-20 10:44:30,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 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 10:44:30,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:30,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:30,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:44:30,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1111030801, now seen corresponding path program 1 times [2022-11-20 10:44:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:30,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77963833] [2022-11-20 10:44:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:30,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:30,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77963833] [2022-11-20 10:44:30,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77963833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712914334] [2022-11-20 10:44:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:30,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:30,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:30,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:30,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:44:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:30,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:44:30,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:31,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:31,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712914334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:31,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:31,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-11-20 10:44:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732985334] [2022-11-20 10:44:31,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:31,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:44:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:44:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:44:31,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-11-20 10:44:31,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 156 transitions, 490 flow. Second operand has 9 states, 9 states have (on average 122.44444444444444) internal successors, (1102), 9 states have internal predecessors, (1102), 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 10:44:31,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:31,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-11-20 10:44:31,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:36,777 INFO L130 PetriNetUnfolder]: 24127/35325 cut-off events. [2022-11-20 10:44:36,778 INFO L131 PetriNetUnfolder]: For 28880/29208 co-relation queries the response was YES. [2022-11-20 10:44:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92671 conditions, 35325 events. 24127/35325 cut-off events. For 28880/29208 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 242073 event pairs, 6298 based on Foata normal form. 748/26883 useless extension candidates. Maximal degree in co-relation 92660. Up to 9139 conditions per place. [2022-11-20 10:44:37,270 INFO L137 encePairwiseOnDemand]: 155/169 looper letters, 109 selfloop transitions, 18 changer transitions 4/235 dead transitions. [2022-11-20 10:44:37,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 235 transitions, 990 flow [2022-11-20 10:44:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:44:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:44:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1424 transitions. [2022-11-20 10:44:37,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.766003227541689 [2022-11-20 10:44:37,278 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1424 transitions. [2022-11-20 10:44:37,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1424 transitions. [2022-11-20 10:44:37,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:37,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1424 transitions. [2022-11-20 10:44:37,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.45454545454547) internal successors, (1424), 11 states have internal predecessors, (1424), 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 10:44:37,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 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 10:44:37,291 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 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 10:44:37,291 INFO L175 Difference]: Start difference. First operand has 155 places, 156 transitions, 490 flow. Second operand 11 states and 1424 transitions. [2022-11-20 10:44:37,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 235 transitions, 990 flow [2022-11-20 10:44:38,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 235 transitions, 984 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-20 10:44:38,439 INFO L231 Difference]: Finished difference. Result has 169 places, 161 transitions, 582 flow [2022-11-20 10:44:38,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=582, PETRI_PLACES=169, PETRI_TRANSITIONS=161} [2022-11-20 10:44:38,440 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 18 predicate places. [2022-11-20 10:44:38,442 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions, 582 flow [2022-11-20 10:44:38,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.44444444444444) internal successors, (1102), 9 states have internal predecessors, (1102), 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 10:44:38,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:38,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:38,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:38,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:38,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:38,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1629072213, now seen corresponding path program 1 times [2022-11-20 10:44:38,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:38,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803330541] [2022-11-20 10:44:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:44:39,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:39,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803330541] [2022-11-20 10:44:39,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803330541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:39,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845439330] [2022-11-20 10:44:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:39,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:39,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:39,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:39,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:44:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:39,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:44:39,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:44:40,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:44:40,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845439330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:40,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:40,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-20 10:44:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447275802] [2022-11-20 10:44:40,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:40,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:44:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:44:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:44:40,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:44:40,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions, 582 flow. Second operand has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 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 10:44:40,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:40,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:44:40,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:44:54,247 INFO L130 PetriNetUnfolder]: 67445/100185 cut-off events. [2022-11-20 10:44:54,247 INFO L131 PetriNetUnfolder]: For 224941/225128 co-relation queries the response was YES. [2022-11-20 10:44:54,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290858 conditions, 100185 events. 67445/100185 cut-off events. For 224941/225128 co-relation queries the response was YES. Maximal size of possible extension queue 4453. Compared 770762 event pairs, 18081 based on Foata normal form. 1/78920 useless extension candidates. Maximal degree in co-relation 290841. Up to 22784 conditions per place. [2022-11-20 10:44:55,474 INFO L137 encePairwiseOnDemand]: 150/169 looper letters, 218 selfloop transitions, 44 changer transitions 11/357 dead transitions. [2022-11-20 10:44:55,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 357 transitions, 2284 flow [2022-11-20 10:44:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:44:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:44:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1902 transitions. [2022-11-20 10:44:55,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7034023668639053 [2022-11-20 10:44:55,481 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1902 transitions. [2022-11-20 10:44:55,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1902 transitions. [2022-11-20 10:44:55,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:44:55,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1902 transitions. [2022-11-20 10:44:55,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.875) internal successors, (1902), 16 states have internal predecessors, (1902), 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 10:44:55,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 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 10:44:55,495 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 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 10:44:55,495 INFO L175 Difference]: Start difference. First operand has 169 places, 161 transitions, 582 flow. Second operand 16 states and 1902 transitions. [2022-11-20 10:44:55,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 357 transitions, 2284 flow [2022-11-20 10:44:58,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 357 transitions, 2225 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-20 10:44:58,224 INFO L231 Difference]: Finished difference. Result has 188 places, 189 transitions, 898 flow [2022-11-20 10:44:58,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=898, PETRI_PLACES=188, PETRI_TRANSITIONS=189} [2022-11-20 10:44:58,225 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 37 predicate places. [2022-11-20 10:44:58,225 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 189 transitions, 898 flow [2022-11-20 10:44:58,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 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 10:44:58,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:58,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:58,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:44:58,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff3a8c1-2030-4f30-81d7-1ce3175a5984/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:44:58,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:44:58,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1176408093, now seen corresponding path program 1 times [2022-11-20 10:44:58,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:58,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219322393] [2022-11-20 10:44:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:58,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:44:59,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219322393] [2022-11-20 10:44:59,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219322393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:59,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:59,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:44:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254910732] [2022-11-20 10:44:59,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:59,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:44:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:44:59,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:59,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-11-20 10:44:59,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 189 transitions, 898 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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 10:44:59,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:59,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-11-20 10:44:59,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:45:12,813 INFO L130 PetriNetUnfolder]: 67256/98721 cut-off events. [2022-11-20 10:45:12,813 INFO L131 PetriNetUnfolder]: For 340189/340501 co-relation queries the response was YES. [2022-11-20 10:45:13,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350691 conditions, 98721 events. 67256/98721 cut-off events. For 340189/340501 co-relation queries the response was YES. Maximal size of possible extension queue 4655. Compared 752417 event pairs, 31720 based on Foata normal form. 1/86031 useless extension candidates. Maximal degree in co-relation 350666. Up to 79055 conditions per place. [2022-11-20 10:45:14,077 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 118 selfloop transitions, 37 changer transitions 12/251 dead transitions. [2022-11-20 10:45:14,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 251 transitions, 1684 flow [2022-11-20 10:45:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:45:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:45:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-11-20 10:45:14,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-11-20 10:45:14,080 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-11-20 10:45:14,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-11-20 10:45:14,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:45:14,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-11-20 10:45:14,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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 10:45:14,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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 10:45:14,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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 10:45:14,087 INFO L175 Difference]: Start difference. First operand has 188 places, 189 transitions, 898 flow. Second operand 6 states and 740 transitions. [2022-11-20 10:45:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 251 transitions, 1684 flow [2022-11-20 10:45:17,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 251 transitions, 1678 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:45:17,028 INFO L231 Difference]: Finished difference. Result has 192 places, 207 transitions, 1199 flow [2022-11-20 10:45:17,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1199, PETRI_PLACES=192, PETRI_TRANSITIONS=207} [2022-11-20 10:45:17,029 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 41 predicate places. [2022-11-20 10:45:17,029 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 207 transitions, 1199 flow [2022-11-20 10:45:17,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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 10:45:17,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:45:17,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:45:17,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:45:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 790397741, now seen corresponding path program 1 times [2022-11-20 10:45:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506014895] [2022-11-20 10:45:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:45:17,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:17,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506014895] [2022-11-20 10:45:17,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506014895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:17,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:17,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:45:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419459510] [2022-11-20 10:45:17,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:17,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-11-20 10:45:17,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 207 transitions, 1199 flow. Second operand has 6 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 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 10:45:17,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:45:17,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-11-20 10:45:17,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand