./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ --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 327bb4ad7f981d20a6e5212aac300a9249d1857b0280531d57d587d5a0195c5f --- 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-dbf71c6-m [2022-10-17 10:21:31,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:21:31,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:21:31,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:21:31,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:21:31,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:21:31,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:21:31,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:21:31,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:21:31,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:21:31,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:21:31,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:21:31,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:21:31,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:21:31,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:21:31,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:21:31,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:21:31,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:21:31,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:21:31,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:21:31,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:21:31,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:21:31,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:21:31,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:21:31,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:21:31,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:21:31,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:21:31,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:21:31,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:21:31,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:21:31,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:21:31,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:21:31,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:21:31,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:21:31,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:21:31,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:21:31,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:21:31,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:21:31,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:21:31,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:21:31,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:21:31,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:21:32,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:21:32,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:21:32,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:21:32,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:21:32,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:21:32,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:21:32,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:21:32,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:21:32,027 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:21:32,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:21:32,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:21:32,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:21:32,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:21:32,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:21:32,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:21:32,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:21:32,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:21:32,030 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:21:32,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:21:32,030 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:21:32,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:21:32,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:21:32,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:21:32,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:21:32,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:32,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:21:32,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:21:32,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:21:32,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:21:32,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:21:32,034 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:21:32,034 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:21:32,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:21:32,034 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_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327bb4ad7f981d20a6e5212aac300a9249d1857b0280531d57d587d5a0195c5f [2022-10-17 10:21:32,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:21:32,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:21:32,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:21:32,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:21:32,307 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:21:32,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2022-10-17 10:21:32,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/data/8a94ee9b2/f01b189a692d4a17aa8de1c74c8ac74d/FLAG375148e6a [2022-10-17 10:21:32,861 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:21:32,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2022-10-17 10:21:32,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/data/8a94ee9b2/f01b189a692d4a17aa8de1c74c8ac74d/FLAG375148e6a [2022-10-17 10:21:33,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/data/8a94ee9b2/f01b189a692d4a17aa8de1c74c8ac74d [2022-10-17 10:21:33,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:21:33,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:21:33,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:33,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:21:33,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:21:33,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720ddce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33, skipping insertion in model container [2022-10-17 10:21:33,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:21:33,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:21:33,433 WARN L230 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_82ce6528-83e9-4952-b55e-87b6c5144109/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[671,684] [2022-10-17 10:21:33,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:33,533 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:21:33,547 WARN L230 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_82ce6528-83e9-4952-b55e-87b6c5144109/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[671,684] [2022-10-17 10:21:33,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:33,612 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:21:33,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33 WrapperNode [2022-10-17 10:21:33,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:33,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:33,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:21:33,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:21:33,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,670 INFO L138 Inliner]: procedures = 30, calls = 35, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 220 [2022-10-17 10:21:33,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:33,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:21:33,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:21:33,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:21:33,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:21:33,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:21:33,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:21:33,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:21:33,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (1/1) ... [2022-10-17 10:21:33,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:33,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:21:33,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:21:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:21:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-10-17 10:21:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-10-17 10:21:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:21:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:21:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:21:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:21:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:21:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:21:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:21:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:21:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:21:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:21:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:21:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:21:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:21:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:21:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:21:33,848 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:21:33,850 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:21:34,237 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:21:34,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:21:34,248 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:21:34,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:34 BoogieIcfgContainer [2022-10-17 10:21:34,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:21:34,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:21:34,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:21:34,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:21:34,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:21:33" (1/3) ... [2022-10-17 10:21:34,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35663fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:34, skipping insertion in model container [2022-10-17 10:21:34,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:33" (2/3) ... [2022-10-17 10:21:34,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35663fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:34, skipping insertion in model container [2022-10-17 10:21:34,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:34" (3/3) ... [2022-10-17 10:21:34,260 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2022-10-17 10:21:34,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:21:34,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:21:34,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:21:34,350 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;@33c191ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:21:34,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:21:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 89 states have (on average 1.550561797752809) internal successors, (138), 93 states have internal predecessors, (138), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-10-17 10:21:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:21:34,371 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:34,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:34,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1377578721, now seen corresponding path program 1 times [2022-10-17 10:21:34,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174396639] [2022-10-17 10:21:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:34,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174396639] [2022-10-17 10:21:34,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174396639] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:34,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:34,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:21:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207953514] [2022-10-17 10:21:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:21:35,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:21:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:21:35,052 INFO L87 Difference]: Start difference. First operand has 115 states, 89 states have (on average 1.550561797752809) internal successors, (138), 93 states have internal predecessors, (138), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:35,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:35,926 INFO L93 Difference]: Finished difference Result 361 states and 553 transitions. [2022-10-17 10:21:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:21:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-10-17 10:21:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:35,953 INFO L225 Difference]: With dead ends: 361 [2022-10-17 10:21:35,953 INFO L226 Difference]: Without dead ends: 247 [2022-10-17 10:21:35,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:21:35,964 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 309 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:35,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 498 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:21:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-10-17 10:21:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 204. [2022-10-17 10:21:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 163 states have (on average 1.4662576687116564) internal successors, (239), 166 states have internal predecessors, (239), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2022-10-17 10:21:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 294 transitions. [2022-10-17 10:21:36,073 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 294 transitions. Word has length 57 [2022-10-17 10:21:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:36,074 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 294 transitions. [2022-10-17 10:21:36,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 294 transitions. [2022-10-17 10:21:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:21:36,083 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:36,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:36,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:21:36,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1123129379, now seen corresponding path program 1 times [2022-10-17 10:21:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:36,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518068164] [2022-10-17 10:21:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:36,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518068164] [2022-10-17 10:21:36,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518068164] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:36,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:36,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:21:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026016599] [2022-10-17 10:21:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:21:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:21:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:21:36,454 INFO L87 Difference]: Start difference. First operand 204 states and 294 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:37,203 INFO L93 Difference]: Finished difference Result 555 states and 802 transitions. [2022-10-17 10:21:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:21:37,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-10-17 10:21:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:37,212 INFO L225 Difference]: With dead ends: 555 [2022-10-17 10:21:37,212 INFO L226 Difference]: Without dead ends: 360 [2022-10-17 10:21:37,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:21:37,223 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 288 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:37,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 792 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:21:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-10-17 10:21:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 294. [2022-10-17 10:21:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 236 states have (on average 1.4576271186440677) internal successors, (344), 240 states have internal predecessors, (344), 37 states have call successors, (37), 19 states have call predecessors, (37), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2022-10-17 10:21:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2022-10-17 10:21:37,317 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 57 [2022-10-17 10:21:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:37,318 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2022-10-17 10:21:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2022-10-17 10:21:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:21:37,320 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:37,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:21:37,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash -229643041, now seen corresponding path program 1 times [2022-10-17 10:21:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:37,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892816378] [2022-10-17 10:21:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:37,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:37,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:37,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892816378] [2022-10-17 10:21:37,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892816378] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:37,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:37,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:21:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914652896] [2022-10-17 10:21:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:37,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:21:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:21:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:21:37,530 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:38,262 INFO L93 Difference]: Finished difference Result 906 states and 1299 transitions. [2022-10-17 10:21:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:21:38,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-10-17 10:21:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:38,270 INFO L225 Difference]: With dead ends: 906 [2022-10-17 10:21:38,270 INFO L226 Difference]: Without dead ends: 621 [2022-10-17 10:21:38,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:21:38,280 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 342 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:38,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 774 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:21:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-10-17 10:21:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 469. [2022-10-17 10:21:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 379 states have (on average 1.4538258575197889) internal successors, (551), 385 states have internal predecessors, (551), 55 states have call successors, (55), 31 states have call predecessors, (55), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2022-10-17 10:21:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 672 transitions. [2022-10-17 10:21:38,367 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 672 transitions. Word has length 57 [2022-10-17 10:21:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:38,368 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 672 transitions. [2022-10-17 10:21:38,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 672 transitions. [2022-10-17 10:21:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:21:38,375 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:38,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:38,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:21:38,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2015936413, now seen corresponding path program 1 times [2022-10-17 10:21:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:38,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100625991] [2022-10-17 10:21:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:38,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:38,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:38,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100625991] [2022-10-17 10:21:38,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100625991] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:38,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:38,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:21:38,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279030888] [2022-10-17 10:21:38,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:38,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:21:38,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:21:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:21:38,562 INFO L87 Difference]: Start difference. First operand 469 states and 672 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:39,300 INFO L93 Difference]: Finished difference Result 1458 states and 2090 transitions. [2022-10-17 10:21:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:21:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-10-17 10:21:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:39,309 INFO L225 Difference]: With dead ends: 1458 [2022-10-17 10:21:39,309 INFO L226 Difference]: Without dead ends: 998 [2022-10-17 10:21:39,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:21:39,313 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 285 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:39,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 757 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:21:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-10-17 10:21:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 768. [2022-10-17 10:21:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 620 states have (on average 1.4306451612903226) internal successors, (887), 630 states have internal predecessors, (887), 87 states have call successors, (87), 53 states have call predecessors, (87), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2022-10-17 10:21:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1094 transitions. [2022-10-17 10:21:39,429 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1094 transitions. Word has length 57 [2022-10-17 10:21:39,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:39,430 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1094 transitions. [2022-10-17 10:21:39,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1094 transitions. [2022-10-17 10:21:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:21:39,432 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:39,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:21:39,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1118543135, now seen corresponding path program 1 times [2022-10-17 10:21:39,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:39,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821329458] [2022-10-17 10:21:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:39,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821329458] [2022-10-17 10:21:39,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821329458] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:39,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:39,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:21:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160687249] [2022-10-17 10:21:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:21:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:21:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:21:39,527 INFO L87 Difference]: Start difference. First operand 768 states and 1094 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:40,127 INFO L93 Difference]: Finished difference Result 2132 states and 3040 transitions. [2022-10-17 10:21:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:21:40,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-10-17 10:21:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:40,137 INFO L225 Difference]: With dead ends: 2132 [2022-10-17 10:21:40,137 INFO L226 Difference]: Without dead ends: 1374 [2022-10-17 10:21:40,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:21:40,141 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 397 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:40,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 576 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:21:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2022-10-17 10:21:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1169. [2022-10-17 10:21:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 938 states have (on average 1.3997867803837953) internal successors, (1313), 957 states have internal predecessors, (1313), 136 states have call successors, (136), 83 states have call predecessors, (136), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2022-10-17 10:21:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1628 transitions. [2022-10-17 10:21:40,261 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1628 transitions. Word has length 57 [2022-10-17 10:21:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:40,262 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1628 transitions. [2022-10-17 10:21:40,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:21:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1628 transitions. [2022-10-17 10:21:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-17 10:21:40,268 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:40,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:21:40,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash -712241775, now seen corresponding path program 1 times [2022-10-17 10:21:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144904997] [2022-10-17 10:21:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:40,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:21:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:21:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:21:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144904997] [2022-10-17 10:21:40,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144904997] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983760760] [2022-10-17 10:21:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:40,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:40,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:40,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:21:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:21:40,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:21:40,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:40,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983760760] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:40,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:40,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-17 10:21:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085346516] [2022-10-17 10:21:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:40,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:40,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:40,635 INFO L87 Difference]: Start difference. First operand 1169 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:40,877 INFO L93 Difference]: Finished difference Result 3375 states and 4754 transitions. [2022-10-17 10:21:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:40,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-10-17 10:21:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:40,910 INFO L225 Difference]: With dead ends: 3375 [2022-10-17 10:21:40,910 INFO L226 Difference]: Without dead ends: 2217 [2022-10-17 10:21:40,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:40,915 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 114 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:40,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 421 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:21:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2022-10-17 10:21:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2217. [2022-10-17 10:21:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 1777 states have (on average 1.37816544738323) internal successors, (2449), 1809 states have internal predecessors, (2449), 255 states have call successors, (255), 161 states have call predecessors, (255), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2022-10-17 10:21:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3080 transitions. [2022-10-17 10:21:41,133 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3080 transitions. Word has length 92 [2022-10-17 10:21:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:41,136 INFO L495 AbstractCegarLoop]: Abstraction has 2217 states and 3080 transitions. [2022-10-17 10:21:41,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3080 transitions. [2022-10-17 10:21:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 10:21:41,148 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:41,149 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:41,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:41,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:21:41,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2098539431, now seen corresponding path program 1 times [2022-10-17 10:21:41,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:41,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736754769] [2022-10-17 10:21:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:21:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:21:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:21:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-17 10:21:41,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:41,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736754769] [2022-10-17 10:21:41,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736754769] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:41,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200558470] [2022-10-17 10:21:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:41,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:41,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:41,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:21:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:21:41,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:21:41,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:41,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200558470] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:41,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:41,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-10-17 10:21:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424520076] [2022-10-17 10:21:41,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:41,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:41,813 INFO L87 Difference]: Start difference. First operand 2217 states and 3080 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:21:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:42,125 INFO L93 Difference]: Finished difference Result 6487 states and 9053 transitions. [2022-10-17 10:21:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:42,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2022-10-17 10:21:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:42,155 INFO L225 Difference]: With dead ends: 6487 [2022-10-17 10:21:42,156 INFO L226 Difference]: Without dead ends: 4284 [2022-10-17 10:21:42,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:42,164 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 81 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:42,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 315 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:21:42,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2022-10-17 10:21:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 4224. [2022-10-17 10:21:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 3390 states have (on average 1.370796460176991) internal successors, (4647), 3451 states have internal predecessors, (4647), 475 states have call successors, (475), 311 states have call predecessors, (475), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2022-10-17 10:21:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5810 transitions. [2022-10-17 10:21:42,556 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5810 transitions. Word has length 118 [2022-10-17 10:21:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:42,557 INFO L495 AbstractCegarLoop]: Abstraction has 4224 states and 5810 transitions. [2022-10-17 10:21:42,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:21:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5810 transitions. [2022-10-17 10:21:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:21:42,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:42,571 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:42,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:42,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:42,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:42,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1491695225, now seen corresponding path program 1 times [2022-10-17 10:21:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:42,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711947869] [2022-10-17 10:21:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-17 10:21:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:21:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:21:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-17 10:21:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-17 10:21:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:42,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711947869] [2022-10-17 10:21:42,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711947869] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:42,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751003964] [2022-10-17 10:21:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:42,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:42,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:42,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:43,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:21:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:43,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:21:43,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 10:21:43,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:43,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751003964] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:43,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:43,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-17 10:21:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594433066] [2022-10-17 10:21:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:43,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:43,144 INFO L87 Difference]: Start difference. First operand 4224 states and 5810 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:21:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:43,532 INFO L93 Difference]: Finished difference Result 7498 states and 10341 transitions. [2022-10-17 10:21:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 134 [2022-10-17 10:21:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:43,564 INFO L225 Difference]: With dead ends: 7498 [2022-10-17 10:21:43,564 INFO L226 Difference]: Without dead ends: 4552 [2022-10-17 10:21:43,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:43,577 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 101 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:43,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:21:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-10-17 10:21:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4514. [2022-10-17 10:21:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 3648 states have (on average 1.3434758771929824) internal successors, (4901), 3709 states have internal predecessors, (4901), 481 states have call successors, (481), 337 states have call predecessors, (481), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2022-10-17 10:21:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 6102 transitions. [2022-10-17 10:21:44,023 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 6102 transitions. Word has length 134 [2022-10-17 10:21:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:44,024 INFO L495 AbstractCegarLoop]: Abstraction has 4514 states and 6102 transitions. [2022-10-17 10:21:44,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:21:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 6102 transitions. [2022-10-17 10:21:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-17 10:21:44,036 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:44,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:44,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:44,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:44,250 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1657376431, now seen corresponding path program 1 times [2022-10-17 10:21:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:44,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722479428] [2022-10-17 10:21:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:44,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:21:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:21:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:44,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722479428] [2022-10-17 10:21:44,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722479428] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:44,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548689413] [2022-10-17 10:21:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:44,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:44,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:44,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:21:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:21:44,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 10:21:44,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:44,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548689413] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:44,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:44,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-17 10:21:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552468819] [2022-10-17 10:21:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:44,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:44,595 INFO L87 Difference]: Start difference. First operand 4514 states and 6102 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 10:21:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:44,979 INFO L93 Difference]: Finished difference Result 6910 states and 9481 transitions. [2022-10-17 10:21:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:44,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2022-10-17 10:21:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:45,013 INFO L225 Difference]: With dead ends: 6910 [2022-10-17 10:21:45,014 INFO L226 Difference]: Without dead ends: 4550 [2022-10-17 10:21:45,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:45,024 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 111 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:45,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 400 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:21:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2022-10-17 10:21:45,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4490. [2022-10-17 10:21:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3624 states have (on average 1.319812362030905) internal successors, (4783), 3685 states have internal predecessors, (4783), 481 states have call successors, (481), 337 states have call predecessors, (481), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2022-10-17 10:21:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5984 transitions. [2022-10-17 10:21:45,459 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5984 transitions. Word has length 135 [2022-10-17 10:21:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:45,460 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5984 transitions. [2022-10-17 10:21:45,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 10:21:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5984 transitions. [2022-10-17 10:21:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-17 10:21:45,476 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:45,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:45,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 10:21:45,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1768717425, now seen corresponding path program 1 times [2022-10-17 10:21:45,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:45,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973571603] [2022-10-17 10:21:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:21:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:21:45,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973571603] [2022-10-17 10:21:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973571603] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104344365] [2022-10-17 10:21:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:45,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:45,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:21:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:45,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:21:45,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:21:45,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:45,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104344365] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:45,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:45,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-17 10:21:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428811602] [2022-10-17 10:21:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:45,992 INFO L87 Difference]: Start difference. First operand 4490 states and 5984 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:21:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:46,331 INFO L93 Difference]: Finished difference Result 7814 states and 10540 transitions. [2022-10-17 10:21:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 135 [2022-10-17 10:21:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:46,358 INFO L225 Difference]: With dead ends: 7814 [2022-10-17 10:21:46,358 INFO L226 Difference]: Without dead ends: 3872 [2022-10-17 10:21:46,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:46,370 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 131 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:46,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:21:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2022-10-17 10:21:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3642. [2022-10-17 10:21:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 2942 states have (on average 1.270904146838885) internal successors, (3739), 2987 states have internal predecessors, (3739), 393 states have call successors, (393), 275 states have call predecessors, (393), 306 states have return successors, (510), 387 states have call predecessors, (510), 391 states have call successors, (510) [2022-10-17 10:21:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4642 transitions. [2022-10-17 10:21:46,731 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4642 transitions. Word has length 135 [2022-10-17 10:21:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:46,731 INFO L495 AbstractCegarLoop]: Abstraction has 3642 states and 4642 transitions. [2022-10-17 10:21:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:21:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4642 transitions. [2022-10-17 10:21:46,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:21:46,740 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:46,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:46,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:46,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:21:46,966 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -829055518, now seen corresponding path program 1 times [2022-10-17 10:21:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:46,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290119819] [2022-10-17 10:21:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:46,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:21:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:21:47,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:47,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290119819] [2022-10-17 10:21:47,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290119819] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:47,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671552041] [2022-10-17 10:21:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:47,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:47,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:47,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:21:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:47,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:21:47,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-10-17 10:21:47,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:47,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671552041] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:47,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:47,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-17 10:21:47,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140697893] [2022-10-17 10:21:47,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:21:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:21:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:21:47,320 INFO L87 Difference]: Start difference. First operand 3642 states and 4642 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:47,757 INFO L93 Difference]: Finished difference Result 5070 states and 6521 transitions. [2022-10-17 10:21:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:21:47,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-10-17 10:21:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:47,776 INFO L225 Difference]: With dead ends: 5070 [2022-10-17 10:21:47,776 INFO L226 Difference]: Without dead ends: 2712 [2022-10-17 10:21:47,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:21:47,784 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 150 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:47,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 287 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:21:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2022-10-17 10:21:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2700. [2022-10-17 10:21:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2182 states have (on average 1.2396883593033914) internal successors, (2705), 2209 states have internal predecessors, (2705), 297 states have call successors, (297), 205 states have call predecessors, (297), 220 states have return successors, (354), 289 states have call predecessors, (354), 295 states have call successors, (354) [2022-10-17 10:21:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3356 transitions. [2022-10-17 10:21:48,083 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3356 transitions. Word has length 136 [2022-10-17 10:21:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:48,084 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3356 transitions. [2022-10-17 10:21:48,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3356 transitions. [2022-10-17 10:21:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:21:48,091 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:48,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:48,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:48,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 10:21:48,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1599203104, now seen corresponding path program 1 times [2022-10-17 10:21:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:48,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579066410] [2022-10-17 10:21:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:48,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:21:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:21:48,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:48,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579066410] [2022-10-17 10:21:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579066410] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484632967] [2022-10-17 10:21:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:48,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:48,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:48,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:21:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:48,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:21:48,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-10-17 10:21:48,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484632967] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:48,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:48,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-17 10:21:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572534061] [2022-10-17 10:21:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:21:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:48,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:21:48,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:21:48,688 INFO L87 Difference]: Start difference. First operand 2700 states and 3356 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:49,152 INFO L93 Difference]: Finished difference Result 5041 states and 6343 transitions. [2022-10-17 10:21:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:21:49,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-10-17 10:21:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:49,178 INFO L225 Difference]: With dead ends: 5041 [2022-10-17 10:21:49,178 INFO L226 Difference]: Without dead ends: 2648 [2022-10-17 10:21:49,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:21:49,188 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 171 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:49,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 294 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:21:49,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2022-10-17 10:21:49,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 1674. [2022-10-17 10:21:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1368 states have (on average 1.192251461988304) internal successors, (1631), 1383 states have internal predecessors, (1631), 175 states have call successors, (175), 123 states have call predecessors, (175), 130 states have return successors, (203), 169 states have call predecessors, (203), 173 states have call successors, (203) [2022-10-17 10:21:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2009 transitions. [2022-10-17 10:21:49,408 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2009 transitions. Word has length 136 [2022-10-17 10:21:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:49,408 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2009 transitions. [2022-10-17 10:21:49,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2009 transitions. [2022-10-17 10:21:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:21:49,412 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:49,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:49,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-17 10:21:49,626 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash 292060706, now seen corresponding path program 1 times [2022-10-17 10:21:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:49,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484390267] [2022-10-17 10:21:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:21:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:21:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:49,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484390267] [2022-10-17 10:21:49,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484390267] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:49,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758857747] [2022-10-17 10:21:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:49,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:49,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:49,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:49,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:21:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:49,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:21:49,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-10-17 10:21:49,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:49,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758857747] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:49,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:49,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-10-17 10:21:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936845589] [2022-10-17 10:21:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:49,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:21:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:21:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:21:49,984 INFO L87 Difference]: Start difference. First operand 1674 states and 2009 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:50,201 INFO L93 Difference]: Finished difference Result 2813 states and 3395 transitions. [2022-10-17 10:21:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:21:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-10-17 10:21:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:50,207 INFO L225 Difference]: With dead ends: 2813 [2022-10-17 10:21:50,207 INFO L226 Difference]: Without dead ends: 1149 [2022-10-17 10:21:50,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:50,212 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 48 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:50,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 585 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:21:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-10-17 10:21:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1113. [2022-10-17 10:21:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 914 states have (on average 1.163019693654267) internal successors, (1063), 925 states have internal predecessors, (1063), 112 states have call successors, (112), 80 states have call predecessors, (112), 86 states have return successors, (121), 108 states have call predecessors, (121), 110 states have call successors, (121) [2022-10-17 10:21:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1296 transitions. [2022-10-17 10:21:50,348 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1296 transitions. Word has length 136 [2022-10-17 10:21:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:50,349 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1296 transitions. [2022-10-17 10:21:50,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1296 transitions. [2022-10-17 10:21:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:21:50,351 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:50,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:50,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:50,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:50,569 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:50,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1014844378, now seen corresponding path program 1 times [2022-10-17 10:21:50,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:50,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778415861] [2022-10-17 10:21:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:50,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:21:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:21:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:50,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778415861] [2022-10-17 10:21:50,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778415861] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:50,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571140091] [2022-10-17 10:21:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:50,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:50,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:50,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:50,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:21:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:50,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:21:50,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 10:21:50,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:50,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571140091] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:50,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:50,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-10-17 10:21:50,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034547622] [2022-10-17 10:21:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:50,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:21:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:21:50,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:21:50,854 INFO L87 Difference]: Start difference. First operand 1113 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:51,009 INFO L93 Difference]: Finished difference Result 2244 states and 2657 transitions. [2022-10-17 10:21:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:21:51,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-10-17 10:21:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:51,014 INFO L225 Difference]: With dead ends: 2244 [2022-10-17 10:21:51,014 INFO L226 Difference]: Without dead ends: 1141 [2022-10-17 10:21:51,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:51,018 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 10 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:51,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 571 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:21:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-10-17 10:21:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1125. [2022-10-17 10:21:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 926 states have (on average 1.1382289416846652) internal successors, (1054), 937 states have internal predecessors, (1054), 112 states have call successors, (112), 80 states have call predecessors, (112), 86 states have return successors, (121), 108 states have call predecessors, (121), 110 states have call successors, (121) [2022-10-17 10:21:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1287 transitions. [2022-10-17 10:21:51,157 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1287 transitions. Word has length 136 [2022-10-17 10:21:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:51,158 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1287 transitions. [2022-10-17 10:21:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1287 transitions. [2022-10-17 10:21:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 10:21:51,161 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:51,162 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:51,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:21:51,382 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1278811050, now seen corresponding path program 1 times [2022-10-17 10:21:51,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:51,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102099826] [2022-10-17 10:21:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:51,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:21:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-10-17 10:21:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:51,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102099826] [2022-10-17 10:21:51,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102099826] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:51,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:51,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:21:51,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968930302] [2022-10-17 10:21:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:51,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:21:51,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:21:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:21:51,574 INFO L87 Difference]: Start difference. First operand 1125 states and 1287 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-17 10:21:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:52,256 INFO L93 Difference]: Finished difference Result 2085 states and 2361 transitions. [2022-10-17 10:21:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:21:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 136 [2022-10-17 10:21:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:52,265 INFO L225 Difference]: With dead ends: 2085 [2022-10-17 10:21:52,265 INFO L226 Difference]: Without dead ends: 2082 [2022-10-17 10:21:52,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:21:52,267 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 486 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:52,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 514 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:21:52,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-10-17 10:21:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1501. [2022-10-17 10:21:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1236 states have (on average 1.1375404530744337) internal successors, (1406), 1251 states have internal predecessors, (1406), 146 states have call successors, (146), 104 states have call predecessors, (146), 118 states have return successors, (163), 146 states have call predecessors, (163), 144 states have call successors, (163) [2022-10-17 10:21:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1715 transitions. [2022-10-17 10:21:52,466 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1715 transitions. Word has length 136 [2022-10-17 10:21:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:52,467 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 1715 transitions. [2022-10-17 10:21:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-17 10:21:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1715 transitions. [2022-10-17 10:21:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-10-17 10:21:52,470 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:52,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:52,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-17 10:21:52,471 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1930463342, now seen corresponding path program 1 times [2022-10-17 10:21:52,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:52,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640608245] [2022-10-17 10:21:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:52,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:21:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:21:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:21:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:21:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:21:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:21:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-17 10:21:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-17 10:21:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-17 10:21:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-10-17 10:21:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-10-17 10:21:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:52,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640608245] [2022-10-17 10:21:52,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640608245] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:52,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:52,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:21:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050895123] [2022-10-17 10:21:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:21:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:21:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:21:52,571 INFO L87 Difference]: Start difference. First operand 1501 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:21:53,016 INFO L93 Difference]: Finished difference Result 2724 states and 3203 transitions. [2022-10-17 10:21:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:21:53,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2022-10-17 10:21:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:21:53,033 INFO L225 Difference]: With dead ends: 2724 [2022-10-17 10:21:53,034 INFO L226 Difference]: Without dead ends: 1864 [2022-10-17 10:21:53,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:21:53,038 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 142 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:21:53,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 467 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:21:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-10-17 10:21:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1503. [2022-10-17 10:21:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1238 states have (on average 1.137318255250404) internal successors, (1408), 1253 states have internal predecessors, (1408), 146 states have call successors, (146), 104 states have call predecessors, (146), 118 states have return successors, (163), 146 states have call predecessors, (163), 144 states have call successors, (163) [2022-10-17 10:21:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1717 transitions. [2022-10-17 10:21:53,241 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1717 transitions. Word has length 140 [2022-10-17 10:21:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:21:53,242 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 1717 transitions. [2022-10-17 10:21:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:21:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1717 transitions. [2022-10-17 10:21:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-10-17 10:21:53,245 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:21:53,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-17 10:21:53,246 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:21:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1514412424, now seen corresponding path program 1 times [2022-10-17 10:21:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:53,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256902257] [2022-10-17 10:21:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:53,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:53,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:21:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:21:53,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:21:53,338 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:21:53,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:21:53,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-17 10:21:53,344 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:53,351 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:21:53,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:21:53 BoogieIcfgContainer [2022-10-17 10:21:53,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:21:53,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:21:53,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:21:53,497 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:21:53,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:34" (3/4) ... [2022-10-17 10:21:53,499 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 10:21:53,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:21:53,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:21:53,625 INFO L158 Benchmark]: Toolchain (without parser) took 20433.80ms. Allocated memory was 90.2MB in the beginning and 826.3MB in the end (delta: 736.1MB). Free memory was 67.3MB in the beginning and 312.5MB in the end (delta: -245.2MB). Peak memory consumption was 490.8MB. Max. memory is 16.1GB. [2022-10-17 10:21:53,626 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:21:53,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.75ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:21:53,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.80ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:21:53,628 INFO L158 Benchmark]: Boogie Preprocessor took 30.21ms. Allocated memory is still 90.2MB. Free memory was 62.2MB in the beginning and 60.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:21:53,630 INFO L158 Benchmark]: RCFGBuilder took 548.76ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 60.4MB in the beginning and 103.1MB in the end (delta: -42.7MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-10-17 10:21:53,631 INFO L158 Benchmark]: TraceAbstraction took 19242.95ms. Allocated memory was 127.9MB in the beginning and 826.3MB in the end (delta: 698.4MB). Free memory was 102.6MB in the beginning and 323.0MB in the end (delta: -220.4MB). Peak memory consumption was 479.5MB. Max. memory is 16.1GB. [2022-10-17 10:21:53,631 INFO L158 Benchmark]: Witness Printer took 127.49ms. Allocated memory is still 826.3MB. Free memory was 323.0MB in the beginning and 312.5MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:21:53,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.75ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.80ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.21ms. Allocated memory is still 90.2MB. Free memory was 62.2MB in the beginning and 60.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 548.76ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 60.4MB in the beginning and 103.1MB in the end (delta: -42.7MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19242.95ms. Allocated memory was 127.9MB in the beginning and 826.3MB in the end (delta: 698.4MB). Free memory was 102.6MB in the beginning and 323.0MB in the end (delta: -220.4MB). Peak memory consumption was 479.5MB. Max. memory is 16.1GB. * Witness Printer took 127.49ms. Allocated memory is still 826.3MB. Free memory was 323.0MB in the beginning and 312.5MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int m_st ; [L27] int t1_st ; [L28] int m_i ; [L29] int t1_i ; [L30] int M_E = 2; [L31] int T1_E = 2; [L32] int E_M = 2; [L33] int E_1 = 2; [L37] int token ; [L39] int local ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, token=0] [L485] int __retres1 ; [L489] CALL init_model() [L400] m_i = 1 [L401] t1_i = 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L489] RET init_model() [L490] CALL start_simulation() [L426] int kernel_st ; [L427] int tmp ; [L428] int tmp___0 ; [L432] kernel_st = 0 VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L433] FCALL update_channels() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L434] CALL init_threads() [L182] COND TRUE m_i == 1 [L183] m_st = 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L187] COND TRUE t1_i == 1 [L188] t1_st = 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L434] RET init_threads() [L435] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L271] COND FALSE !(M_E == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L276] COND FALSE !(T1_E == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L281] COND FALSE !(E_M == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L286] COND FALSE !(E_1 == 0) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L435] RET fire_delta_events() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L436] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L136] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L146] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L148] return (__retres1); VAL [\old(m_st)=0, \old(t1_st)=0, \result=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND FALSE !(\read(tmp)) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=0, token=0] [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L155] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L165] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L167] return (__retres1); VAL [\old(m_st)=0, \old(t1_st)=0, \result=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND FALSE !(\read(tmp___0)) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=0, tmp___0=0, token=0] [L436] RET activate_threads() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L437] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L299] COND FALSE !(M_E == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L304] COND FALSE !(T1_E == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L309] COND FALSE !(E_M == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L314] COND FALSE !(E_1 == 1) VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L437] RET reset_delta_events() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L440] COND TRUE 1 VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L443] kernel_st = 1 [L444] CALL eval() [L218] int tmp ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L222] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L197] int __retres1 ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 VAL [__retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L213] return (__retres1); VAL [\result=1, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L246] COND TRUE t1_st == 0 [L247] int tmp_ndt_2; [L248] tmp_ndt_2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp_ndt_2) [L251] t1_st = 1 [L252] CALL transmit1() [L100] COND TRUE t1_pc == 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L111] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L113] t1_pc = 1 [L114] t1_st = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L252] RET transmit1() [L222] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L197] int __retres1 ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 VAL [__retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L213] return (__retres1); VAL [\result=1, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND TRUE \read(tmp_ndt_1) [L237] m_st = 1 [L238] CALL master() [L42] int tmp_var = __VERIFIER_nondet_int(); [L44] COND TRUE m_pc == 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L55] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L58] token = __VERIFIER_nondet_int() [L59] local = token [L60] E_1 = 1 VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L61] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L353] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L136] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L146] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L148] return (__retres1); VAL [\old(m_st)=1, \old(t1_st)=2, \result=0, __retres1=0, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND FALSE !(\read(tmp)) VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=0, token=0] [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L155] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L156] COND TRUE E_1 == 1 [L157] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L167] return (__retres1); VAL [\old(m_st)=1, \old(t1_st)=2, \result=1, __retres1=1, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND TRUE \read(tmp___0) [L340] t1_st = 0 VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp=0, tmp___0=1, token=0] [L353] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, token=0] [L61] RET immediate_notify() VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L62] E_1 = 2 [L63] m_pc = 1 [L64] m_st = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L238] RET master() [L246] COND TRUE t1_st == 0 [L247] int tmp_ndt_2; [L248] tmp_ndt_2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp_ndt_2) [L251] t1_st = 1 [L252] CALL transmit1() [L100] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L103] COND TRUE t1_pc == 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L119] token += 1 [L120] E_M = 1 VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L121] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L353] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L136] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L137] COND TRUE E_M == 1 [L138] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L148] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=1, \result=1, __retres1=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND TRUE \read(tmp) [L332] m_st = 0 VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, tmp=1, token=1] [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L155] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L156] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L165] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=0, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L167] return (__retres1); VAL [\old(m_st)=2, \old(t1_st)=1, \result=0, __retres1=0, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND FALSE !(\read(tmp___0)) VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, tmp=1, tmp___0=0, token=1] [L353] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L121] RET immediate_notify() VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L122] E_M = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L111] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L113] t1_pc = 1 [L114] t1_st = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L252] RET transmit1() [L222] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L197] int __retres1 ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 VAL [__retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L213] return (__retres1); VAL [\result=1, __retres1=1, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND TRUE \read(tmp_ndt_1) [L237] m_st = 1 [L238] CALL master() [L42] int tmp_var = __VERIFIER_nondet_int(); [L44] COND FALSE !(m_pc == 0) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L47] COND TRUE m_pc == 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L69] COND FALSE !(token != local + 1) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L74] COND TRUE tmp_var <= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L75] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L80] COND TRUE tmp_var <= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L81] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L82] COND TRUE tmp_var == 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L83] CALL error() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L20] reach_error() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3274 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3166 mSDsluCounter, 7743 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4580 mSDsCounter, 543 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3724 IncrementalHoareTripleChecker+Invalid, 4267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 543 mSolverCounterUnsat, 3163 mSDtfsCounter, 3724 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1451 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4514occurred in iteration=8, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 3064 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 3018 NumberOfCodeBlocks, 3018 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2852 ConstructedInterpolants, 0 QuantifiedInterpolants, 4578 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3590 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 1302/1472 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-10-17 10:21:53,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce6528-83e9-4952-b55e-87b6c5144109/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE