./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8 --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 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc --- 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-e04fb08 [2022-11-16 11:53:30,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:53:30,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:53:30,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:53:30,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:53:30,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:53:30,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:53:30,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:53:30,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:53:30,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:53:30,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:53:30,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:53:30,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:53:30,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:53:30,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:53:30,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:53:30,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:53:30,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:53:30,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:53:30,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:53:30,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:53:30,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:53:30,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:53:30,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:53:30,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:53:30,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:53:30,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:53:30,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:53:30,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:53:30,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:53:30,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:53:30,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:53:30,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:53:30,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:53:30,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:53:30,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:53:30,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:53:30,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:53:30,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:53:30,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:53:30,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:53:30,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:53:30,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:53:30,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:53:30,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:53:30,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:53:30,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:53:30,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:53:30,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:53:30,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:53:30,194 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:53:30,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:53:30,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:53:30,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:53:30,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:53:30,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:53:30,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:53:30,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:53:30,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:53:30,197 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:53:30,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:53:30,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:53:30,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:53:30,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:53:30,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:53:30,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:53:30,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:30,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:53:30,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:53:30,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:53:30,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:53:30,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:53:30,203 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:53:30,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:53:30,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:53:30,204 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_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc [2022-11-16 11:53:30,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:53:30,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:53:30,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:53:30,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:53:30,495 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:53:30,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2022-11-16 11:53:30,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/data/2c2c3311a/50e255c6b06d4add990027b883b4ea37/FLAG76e75be0c [2022-11-16 11:53:31,083 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:53:31,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2022-11-16 11:53:31,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/data/2c2c3311a/50e255c6b06d4add990027b883b4ea37/FLAG76e75be0c [2022-11-16 11:53:31,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/data/2c2c3311a/50e255c6b06d4add990027b883b4ea37 [2022-11-16 11:53:31,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:53:31,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:53:31,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:31,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:53:31,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:53:31,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:31,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eff14e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31, skipping insertion in model container [2022-11-16 11:53:31,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:31,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:53:31,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:53:31,820 WARN L229 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_6593c600-de7d-4d5d-96ae-219add291bfa/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2022-11-16 11:53:31,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:31,841 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:53:31,897 WARN L229 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_6593c600-de7d-4d5d-96ae-219add291bfa/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2022-11-16 11:53:31,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:31,912 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:53:31,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31 WrapperNode [2022-11-16 11:53:31,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:31,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:31,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:53:31,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:53:31,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:31,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:31,990 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 415 [2022-11-16 11:53:31,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:31,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:53:31,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:53:31,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:53:32,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:53:32,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:53:32,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:53:32,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:53:32,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (1/1) ... [2022-11-16 11:53:32,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:32,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:32,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:53:32,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:53:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:53:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:53:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:53:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:53:32,261 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:53:32,263 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:53:33,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:53:33,298 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:53:33,299 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:53:33,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:33 BoogieIcfgContainer [2022-11-16 11:53:33,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:53:33,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:53:33,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:53:33,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:53:33,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:53:31" (1/3) ... [2022-11-16 11:53:33,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb6589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:33, skipping insertion in model container [2022-11-16 11:53:33,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:31" (2/3) ... [2022-11-16 11:53:33,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb6589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:33, skipping insertion in model container [2022-11-16 11:53:33,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:33" (3/3) ... [2022-11-16 11:53:33,326 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2022-11-16 11:53:33,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:53:33,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:53:33,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:33,434 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;@3ea04a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:33,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:53:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:53:33,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:33,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:33,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:33,462 INFO L85 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2022-11-16 11:53:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:33,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117295405] [2022-11-16 11:53:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:33,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:33,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117295405] [2022-11-16 11:53:33,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117295405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:33,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:33,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:53:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805091891] [2022-11-16 11:53:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:33,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:53:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:53:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:53:33,745 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:33,778 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2022-11-16 11:53:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:53:33,781 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:53:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:33,791 INFO L225 Difference]: With dead ends: 216 [2022-11-16 11:53:33,791 INFO L226 Difference]: Without dead ends: 100 [2022-11-16 11:53:33,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:53:33,798 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:33,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-16 11:53:33,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-16 11:53:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2022-11-16 11:53:33,838 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2022-11-16 11:53:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:33,839 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2022-11-16 11:53:33,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2022-11-16 11:53:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:53:33,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:33,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:53:33,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2022-11-16 11:53:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899762273] [2022-11-16 11:53:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:33,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:33,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899762273] [2022-11-16 11:53:33,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899762273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:33,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:33,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546702534] [2022-11-16 11:53:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:33,936 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:33,994 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2022-11-16 11:53:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:53:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:33,996 INFO L225 Difference]: With dead ends: 201 [2022-11-16 11:53:33,996 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 11:53:33,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:33,999 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:33,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 308 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 11:53:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-16 11:53:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2022-11-16 11:53:34,016 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2022-11-16 11:53:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:34,016 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2022-11-16 11:53:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2022-11-16 11:53:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:53:34,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:34,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:34,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:53:34,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2022-11-16 11:53:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:34,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217660944] [2022-11-16 11:53:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:34,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217660944] [2022-11-16 11:53:34,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217660944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:34,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:34,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:53:34,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453893053] [2022-11-16 11:53:34,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:34,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:34,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:34,559 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:34,941 INFO L93 Difference]: Finished difference Result 207 states and 335 transitions. [2022-11-16 11:53:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:53:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:53:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:34,944 INFO L225 Difference]: With dead ends: 207 [2022-11-16 11:53:34,944 INFO L226 Difference]: Without dead ends: 188 [2022-11-16 11:53:34,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:34,946 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 128 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:34,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 378 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:53:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-16 11:53:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2022-11-16 11:53:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2022-11-16 11:53:34,965 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2022-11-16 11:53:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:34,966 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2022-11-16 11:53:34,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2022-11-16 11:53:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:53:34,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:34,968 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:34,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:53:34,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:34,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2022-11-16 11:53:34,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:34,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229295645] [2022-11-16 11:53:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229295645] [2022-11-16 11:53:35,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229295645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:35,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:35,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56886442] [2022-11-16 11:53:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:35,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:35,017 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:35,073 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2022-11-16 11:53:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:35,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 11:53:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:35,074 INFO L225 Difference]: With dead ends: 293 [2022-11-16 11:53:35,075 INFO L226 Difference]: Without dead ends: 124 [2022-11-16 11:53:35,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:35,077 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 30 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:35,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 283 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-16 11:53:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2022-11-16 11:53:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2022-11-16 11:53:35,086 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2022-11-16 11:53:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:35,086 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2022-11-16 11:53:35,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2022-11-16 11:53:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:53:35,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:35,087 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:53:35,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2022-11-16 11:53:35,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:35,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395747470] [2022-11-16 11:53:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:35,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:53:35,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:35,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395747470] [2022-11-16 11:53:35,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395747470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:35,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:35,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:35,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609138832] [2022-11-16 11:53:35,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:35,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:35,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:35,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:35,159 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:35,194 INFO L93 Difference]: Finished difference Result 248 states and 395 transitions. [2022-11-16 11:53:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 11:53:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:35,196 INFO L225 Difference]: With dead ends: 248 [2022-11-16 11:53:35,196 INFO L226 Difference]: Without dead ends: 129 [2022-11-16 11:53:35,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:35,198 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:35,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 282 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-16 11:53:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2022-11-16 11:53:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 126 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 199 transitions. [2022-11-16 11:53:35,206 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 199 transitions. Word has length 21 [2022-11-16 11:53:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:35,207 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 199 transitions. [2022-11-16 11:53:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 199 transitions. [2022-11-16 11:53:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:53:35,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:35,208 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:35,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:53:35,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:35,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2022-11-16 11:53:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:35,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129868380] [2022-11-16 11:53:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:35,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129868380] [2022-11-16 11:53:35,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129868380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:35,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798562087] [2022-11-16 11:53:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:35,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:35,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:53:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:35,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:53:35,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:35,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:35,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798562087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:35,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:35,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-16 11:53:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524218562] [2022-11-16 11:53:35,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:53:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:53:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:35,731 INFO L87 Difference]: Start difference. First operand 127 states and 199 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:35,921 INFO L93 Difference]: Finished difference Result 237 states and 373 transitions. [2022-11-16 11:53:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:53:35,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 11:53:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:35,922 INFO L225 Difference]: With dead ends: 237 [2022-11-16 11:53:35,923 INFO L226 Difference]: Without dead ends: 214 [2022-11-16 11:53:35,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:35,924 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 566 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:35,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 538 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:53:35,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-16 11:53:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2022-11-16 11:53:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.5679611650485437) internal successors, (323), 206 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 323 transitions. [2022-11-16 11:53:35,941 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 323 transitions. Word has length 23 [2022-11-16 11:53:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:35,942 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 323 transitions. [2022-11-16 11:53:35,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 323 transitions. [2022-11-16 11:53:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:53:35,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:35,946 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:35,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:36,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:53:36,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:36,153 INFO L85 PathProgramCache]: Analyzing trace with hash 665435966, now seen corresponding path program 1 times [2022-11-16 11:53:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:36,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114701140] [2022-11-16 11:53:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:36,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:36,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114701140] [2022-11-16 11:53:36,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114701140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:36,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348693651] [2022-11-16 11:53:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:36,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:36,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:36,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:53:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:36,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:53:36,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:36,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:36,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348693651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:36,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:36,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:53:36,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402751688] [2022-11-16 11:53:36,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:36,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:53:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:53:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:53:36,949 INFO L87 Difference]: Start difference. First operand 207 states and 323 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:37,219 INFO L93 Difference]: Finished difference Result 235 states and 357 transitions. [2022-11-16 11:53:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:53:37,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:53:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:37,221 INFO L225 Difference]: With dead ends: 235 [2022-11-16 11:53:37,222 INFO L226 Difference]: Without dead ends: 232 [2022-11-16 11:53:37,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:53:37,223 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 114 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:37,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 684 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:53:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-16 11:53:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2022-11-16 11:53:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5580357142857142) internal successors, (349), 224 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 349 transitions. [2022-11-16 11:53:37,235 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 349 transitions. Word has length 24 [2022-11-16 11:53:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:37,236 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 349 transitions. [2022-11-16 11:53:37,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 349 transitions. [2022-11-16 11:53:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 11:53:37,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:37,237 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:37,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:37,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:37,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2022-11-16 11:53:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:37,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037298834] [2022-11-16 11:53:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:37,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:53:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:37,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037298834] [2022-11-16 11:53:37,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037298834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:37,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:37,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404046633] [2022-11-16 11:53:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:37,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:37,674 INFO L87 Difference]: Start difference. First operand 225 states and 349 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:37,766 INFO L93 Difference]: Finished difference Result 228 states and 351 transitions. [2022-11-16 11:53:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-16 11:53:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:37,768 INFO L225 Difference]: With dead ends: 228 [2022-11-16 11:53:37,768 INFO L226 Difference]: Without dead ends: 221 [2022-11-16 11:53:37,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:37,772 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 142 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:37,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 140 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:53:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-16 11:53:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-11-16 11:53:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.54337899543379) internal successors, (338), 219 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 338 transitions. [2022-11-16 11:53:37,791 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 338 transitions. Word has length 27 [2022-11-16 11:53:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:37,793 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 338 transitions. [2022-11-16 11:53:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 338 transitions. [2022-11-16 11:53:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:53:37,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:37,798 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:37,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:53:37,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:37,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash 338445793, now seen corresponding path program 1 times [2022-11-16 11:53:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:37,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76193569] [2022-11-16 11:53:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:53:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76193569] [2022-11-16 11:53:37,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76193569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:37,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:37,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027632648] [2022-11-16 11:53:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:37,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:37,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:37,870 INFO L87 Difference]: Start difference. First operand 220 states and 338 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:37,909 INFO L93 Difference]: Finished difference Result 411 states and 630 transitions. [2022-11-16 11:53:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 11:53:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:37,912 INFO L225 Difference]: With dead ends: 411 [2022-11-16 11:53:37,912 INFO L226 Difference]: Without dead ends: 194 [2022-11-16 11:53:37,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:37,915 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 61 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:37,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 184 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-16 11:53:37,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2022-11-16 11:53:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4973821989528795) internal successors, (286), 191 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 286 transitions. [2022-11-16 11:53:37,927 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 286 transitions. Word has length 30 [2022-11-16 11:53:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:37,927 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 286 transitions. [2022-11-16 11:53:37,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 286 transitions. [2022-11-16 11:53:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:53:37,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:37,933 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:37,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:53:37,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1822717533, now seen corresponding path program 1 times [2022-11-16 11:53:37,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:37,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823923166] [2022-11-16 11:53:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:37,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:53:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:38,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823923166] [2022-11-16 11:53:38,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823923166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:38,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616109849] [2022-11-16 11:53:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:38,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:38,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:38,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:38,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:53:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:38,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:53:38,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:53:38,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:53:38,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616109849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:38,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:38,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:53:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219448937] [2022-11-16 11:53:38,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:53:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:38,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:53:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:53:38,679 INFO L87 Difference]: Start difference. First operand 192 states and 286 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:39,294 INFO L93 Difference]: Finished difference Result 263 states and 384 transitions. [2022-11-16 11:53:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:53:39,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-16 11:53:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:39,297 INFO L225 Difference]: With dead ends: 263 [2022-11-16 11:53:39,297 INFO L226 Difference]: Without dead ends: 250 [2022-11-16 11:53:39,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:53:39,298 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 588 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:39,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 781 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:53:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-16 11:53:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 184. [2022-11-16 11:53:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4754098360655739) internal successors, (270), 183 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 270 transitions. [2022-11-16 11:53:39,320 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 270 transitions. Word has length 33 [2022-11-16 11:53:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:39,320 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 270 transitions. [2022-11-16 11:53:39,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 270 transitions. [2022-11-16 11:53:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:53:39,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:39,322 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-16 11:53:39,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:39,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:39,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2082949584, now seen corresponding path program 1 times [2022-11-16 11:53:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348936915] [2022-11-16 11:53:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:40,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348936915] [2022-11-16 11:53:40,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348936915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:40,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101125546] [2022-11-16 11:53:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:40,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:40,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:40,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:53:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:40,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:53:40,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:40,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:41,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101125546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:41,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:41,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-16 11:53:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942652545] [2022-11-16 11:53:41,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:53:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:53:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:53:41,129 INFO L87 Difference]: Start difference. First operand 184 states and 270 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:41,498 INFO L93 Difference]: Finished difference Result 424 states and 623 transitions. [2022-11-16 11:53:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:53:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-16 11:53:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:41,501 INFO L225 Difference]: With dead ends: 424 [2022-11-16 11:53:41,501 INFO L226 Difference]: Without dead ends: 282 [2022-11-16 11:53:41,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:53:41,502 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 261 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:41,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1180 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:53:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-16 11:53:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 234. [2022-11-16 11:53:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4849785407725322) internal successors, (346), 233 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 346 transitions. [2022-11-16 11:53:41,523 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 346 transitions. Word has length 36 [2022-11-16 11:53:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:41,523 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 346 transitions. [2022-11-16 11:53:41,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 346 transitions. [2022-11-16 11:53:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 11:53:41,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:41,525 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-16 11:53:41,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:41,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:53:41,731 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2022-11-16 11:53:41,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:41,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606548944] [2022-11-16 11:53:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:53:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:41,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606548944] [2022-11-16 11:53:41,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606548944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:41,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:41,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:41,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158199214] [2022-11-16 11:53:41,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:41,796 INFO L87 Difference]: Start difference. First operand 234 states and 346 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:41,841 INFO L93 Difference]: Finished difference Result 409 states and 601 transitions. [2022-11-16 11:53:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-16 11:53:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:41,844 INFO L225 Difference]: With dead ends: 409 [2022-11-16 11:53:41,844 INFO L226 Difference]: Without dead ends: 217 [2022-11-16 11:53:41,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:41,846 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 24 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:41,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 184 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-16 11:53:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-11-16 11:53:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.439252336448598) internal successors, (308), 214 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 308 transitions. [2022-11-16 11:53:41,882 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 308 transitions. Word has length 37 [2022-11-16 11:53:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:41,882 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 308 transitions. [2022-11-16 11:53:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 308 transitions. [2022-11-16 11:53:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 11:53:41,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:41,883 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-16 11:53:41,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:53:41,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:41,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1520465566, now seen corresponding path program 1 times [2022-11-16 11:53:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:41,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658006533] [2022-11-16 11:53:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:41,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 11:53:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:41,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658006533] [2022-11-16 11:53:41,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658006533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:41,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:41,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015210455] [2022-11-16 11:53:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:41,949 INFO L87 Difference]: Start difference. First operand 215 states and 308 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:41,984 INFO L93 Difference]: Finished difference Result 293 states and 418 transitions. [2022-11-16 11:53:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-16 11:53:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:41,986 INFO L225 Difference]: With dead ends: 293 [2022-11-16 11:53:41,986 INFO L226 Difference]: Without dead ends: 139 [2022-11-16 11:53:41,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:41,988 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 25 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:41,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 170 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:53:41,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-16 11:53:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2022-11-16 11:53:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4044117647058822) internal successors, (191), 136 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 191 transitions. [2022-11-16 11:53:42,001 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 191 transitions. Word has length 48 [2022-11-16 11:53:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:42,002 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 191 transitions. [2022-11-16 11:53:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 191 transitions. [2022-11-16 11:53:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 11:53:42,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:42,003 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-16 11:53:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:53:42,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1003777494, now seen corresponding path program 1 times [2022-11-16 11:53:42,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:42,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349712674] [2022-11-16 11:53:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:42,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349712674] [2022-11-16 11:53:42,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349712674] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:42,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726484626] [2022-11-16 11:53:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:42,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:42,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:53:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:42,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:53:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:43,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:43,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726484626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:43,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:43,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-16 11:53:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389172950] [2022-11-16 11:53:43,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:43,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:53:43,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:53:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:53:43,554 INFO L87 Difference]: Start difference. First operand 137 states and 191 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:43,868 INFO L93 Difference]: Finished difference Result 164 states and 225 transitions. [2022-11-16 11:53:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:53:43,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-16 11:53:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:43,870 INFO L225 Difference]: With dead ends: 164 [2022-11-16 11:53:43,870 INFO L226 Difference]: Without dead ends: 162 [2022-11-16 11:53:43,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:53:43,871 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 253 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:43,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 868 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:53:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-16 11:53:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 137. [2022-11-16 11:53:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3897058823529411) internal successors, (189), 136 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 189 transitions. [2022-11-16 11:53:43,884 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 189 transitions. Word has length 51 [2022-11-16 11:53:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:43,885 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 189 transitions. [2022-11-16 11:53:43,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 189 transitions. [2022-11-16 11:53:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:53:43,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:43,886 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 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] [2022-11-16 11:53:43,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:53:44,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash 751253453, now seen corresponding path program 1 times [2022-11-16 11:53:44,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:44,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340124013] [2022-11-16 11:53:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:45,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340124013] [2022-11-16 11:53:45,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340124013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292088741] [2022-11-16 11:53:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:45,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:45,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:45,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:53:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:45,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:53:45,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:45,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:46,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292088741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:46,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:46,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2022-11-16 11:53:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124487809] [2022-11-16 11:53:46,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:46,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:53:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:53:46,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:53:46,128 INFO L87 Difference]: Start difference. First operand 137 states and 189 transitions. Second operand has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:47,128 INFO L93 Difference]: Finished difference Result 261 states and 360 transitions. [2022-11-16 11:53:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:53:47,129 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-16 11:53:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:47,129 INFO L225 Difference]: With dead ends: 261 [2022-11-16 11:53:47,129 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:53:47,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:53:47,131 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 544 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:47,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1047 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:53:47,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:53:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:53:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:53:47,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-11-16 11:53:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:47,132 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:53:47,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:53:47,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:53:47,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:53:47,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:53:47,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2022-11-16 11:53:48,580 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2022-11-16 11:53:48,581 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2022-11-16 11:53:48,582 INFO L899 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2022-11-16 11:53:48,583 INFO L899 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2022-11-16 11:53:48,584 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-16 11:53:48,585 INFO L899 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2022-11-16 11:53:48,585 INFO L899 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2022-11-16 11:53:48,585 INFO L902 garLoopResultBuilder]: At program point L16(lines 16 568) the Hoare annotation is: true [2022-11-16 11:53:48,585 INFO L899 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2022-11-16 11:53:48,585 INFO L899 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2022-11-16 11:53:48,585 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2022-11-16 11:53:48,586 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2022-11-16 11:53:48,587 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2022-11-16 11:53:48,587 INFO L899 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2022-11-16 11:53:48,587 INFO L899 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2022-11-16 11:53:48,587 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 11:53:48,587 INFO L899 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2022-11-16 11:53:48,587 INFO L895 garLoopResultBuilder]: At program point L549(lines 16 568) the Hoare annotation is: false [2022-11-16 11:53:48,587 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2022-11-16 11:53:48,588 INFO L899 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2022-11-16 11:53:48,588 INFO L899 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2022-11-16 11:53:48,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 11:53:48,588 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0)) (.cse1 (<= 0 |ULTIMATE.start_main_~this_buffer_empty~0#1|))) (or (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~this_expect~0#1| (* 2 (div |ULTIMATE.start_main_~this_expect~0#1| 2))) (< (div |ULTIMATE.start_main_~P8~0#1| 4294967296) (+ (div (+ |ULTIMATE.start_main_~this_expect~0#1| (* (div (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2) (- 2)) 1) 4294967296) 1)) .cse1 (<= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))))) [2022-11-16 11:53:48,588 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2022-11-16 11:53:48,589 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2022-11-16 11:53:48,590 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2022-11-16 11:53:48,591 INFO L899 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2022-11-16 11:53:48,591 INFO L895 garLoopResultBuilder]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0)) (.cse1 (<= 0 |ULTIMATE.start_main_~this_buffer_empty~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~this_expect~0#1| (* 2 (div |ULTIMATE.start_main_~this_expect~0#1| 2)))) (.cse3 (< (div |ULTIMATE.start_main_~P8~0#1| 4294967296) (+ (div (+ |ULTIMATE.start_main_~this_expect~0#1| (* (div (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2) (- 2)) 1) 4294967296) 1))) (.cse4 (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))) (.cse5 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1))) (or (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1) (and .cse0 .cse2 .cse3 .cse1 (<= 5 |ULTIMATE.start_main_~q~0#1|) .cse4) (and (= |ULTIMATE.start_main_~q~0#1| 4) .cse3 (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 1)) .cse4 .cse5) (and .cse0 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse3 .cse1 (= (mod (mod |ULTIMATE.start_main_~this_expect~0#1| 2) 4294967296) 1) .cse4) (and .cse2 (= |ULTIMATE.start_main_~q~0#1| 1) .cse3 .cse4 .cse5))) [2022-11-16 11:53:48,591 INFO L899 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2022-11-16 11:53:48,591 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2022-11-16 11:53:48,592 INFO L899 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2022-11-16 11:53:48,593 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2022-11-16 11:53:48,594 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2022-11-16 11:53:48,595 INFO L899 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2022-11-16 11:53:48,595 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2022-11-16 11:53:48,595 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2022-11-16 11:53:48,595 INFO L899 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2022-11-16 11:53:48,595 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2022-11-16 11:53:48,599 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:48,601 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:53:48,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:53:48 BoogieIcfgContainer [2022-11-16 11:53:48,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:53:48,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:53:48,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:53:48,623 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:53:48,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:33" (3/4) ... [2022-11-16 11:53:48,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:53:48,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-16 11:53:48,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:53:48,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:53:48,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:53:48,673 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:53:48,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:53:48,674 INFO L158 Benchmark]: Toolchain (without parser) took 17254.04ms. Allocated memory was 98.6MB in the beginning and 226.5MB in the end (delta: 127.9MB). Free memory was 64.9MB in the beginning and 75.9MB in the end (delta: -11.0MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,674 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:53:48,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.55ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 66.5MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.33ms. Allocated memory is still 98.6MB. Free memory was 66.5MB in the beginning and 61.3MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,676 INFO L158 Benchmark]: Boogie Preprocessor took 48.72ms. Allocated memory is still 98.6MB. Free memory was 61.3MB in the beginning and 58.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,676 INFO L158 Benchmark]: RCFGBuilder took 1276.03ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 58.5MB in the beginning and 75.6MB in the end (delta: -17.1MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,677 INFO L158 Benchmark]: TraceAbstraction took 15303.85ms. Allocated memory was 127.9MB in the beginning and 226.5MB in the end (delta: 98.6MB). Free memory was 75.0MB in the beginning and 79.0MB in the end (delta: -4.0MB). Peak memory consumption was 106.7MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,677 INFO L158 Benchmark]: Witness Printer took 50.65ms. Allocated memory is still 226.5MB. Free memory was 79.0MB in the beginning and 75.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:53:48,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.55ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 66.5MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.33ms. Allocated memory is still 98.6MB. Free memory was 66.5MB in the beginning and 61.3MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.72ms. Allocated memory is still 98.6MB. Free memory was 61.3MB in the beginning and 58.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1276.03ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 58.5MB in the beginning and 75.6MB in the end (delta: -17.1MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15303.85ms. Allocated memory was 127.9MB in the beginning and 226.5MB in the end (delta: 98.6MB). Free memory was 75.0MB in the beginning and 79.0MB in the end (delta: -4.0MB). Peak memory consumption was 106.7MB. Max. memory is 16.1GB. * Witness Printer took 50.65ms. Allocated memory is still 226.5MB. Free memory was 79.0MB in the beginning and 75.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 567]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2772 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2772 mSDsluCounter, 7226 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4849 mSDsCounter, 261 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1187 IncrementalHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 261 mSolverCounterUnsat, 2377 mSDtfsCounter, 1187 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=11, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 180 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 36 NumberOfFragments, 228 HoareAnnotationTreeSize, 4 FomulaSimplifications, 210 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6334 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 661 NumberOfCodeBlocks, 661 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 8674 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 241/488 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((((this_expect == 0 && this_buffer_empty <= 0) && q == 0) && 0 <= this_buffer_empty) || (((((this_buffer_empty <= 0 && this_expect <= 2 * (this_expect / 2)) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= this_buffer_empty) && 5 <= q) && 0 <= P8 + 2147483648)) || ((((q == 4 && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && this_expect <= 2 * ((-1 + this_expect) / 2) + 1) && 0 <= P8 + 2147483648) && this_buffer_empty == 1)) || (((((this_buffer_empty <= 0 && 3 == q) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= this_buffer_empty) && this_expect % 2 % 4294967296 == 1) && 0 <= P8 + 2147483648)) || ((((this_expect <= 2 * (this_expect / 2) && q == 1) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= P8 + 2147483648) && this_buffer_empty == 1) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((this_expect == 0 && this_buffer_empty <= 0) && q == 0) && 0 <= this_buffer_empty) || (((((this_buffer_empty <= 0 && this_expect <= 2 * (this_expect / 2)) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= this_buffer_empty) && 5 <= q) && 0 <= P8 + 2147483648) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-11-16 11:53:48,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6593c600-de7d-4d5d-96ae-219add291bfa/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE