./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --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_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/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_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/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_80601b8b-c59f-494f-b740-ddeba87aa27c/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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- 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 12:44:19,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:44:19,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:44:19,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:44:19,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:44:19,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:44:19,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:44:19,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:44:19,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:44:19,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:44:19,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:44:19,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:44:19,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:44:19,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:44:19,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:44:19,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:44:19,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:44:19,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:44:19,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:44:19,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:44:19,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:44:19,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:44:19,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:44:19,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:44:19,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:44:19,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:44:19,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:44:19,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:44:19,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:44:19,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:44:19,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:44:19,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:44:19,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:44:19,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:44:19,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:44:19,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:44:19,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:44:19,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:44:19,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:44:19,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:44:19,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:44:19,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:44:19,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:44:19,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:44:19,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:44:19,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:44:19,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:44:19,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:44:19,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:44:19,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:44:19,881 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:44:19,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:44:19,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:44:19,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:44:19,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:44:19,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:44:19,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:44:19,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:44:19,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:44:19,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:44:19,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:44:19,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:44:19,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:44:19,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:44:19,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:44:19,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:44:19,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:44:19,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:44:19,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:44:19,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:44:19,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:44:19,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:44:19,886 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:44:19,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:44:19,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:44:19,886 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_80601b8b-c59f-494f-b740-ddeba87aa27c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2022-11-16 12:44:20,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:44:20,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:44:20,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:44:20,172 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:44:20,173 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:44:20,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2022-11-16 12:44:20,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/data/198b46b1f/83404869e0c643bdbb33b54821015892/FLAGdf403b435 [2022-11-16 12:44:20,982 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:44:20,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2022-11-16 12:44:21,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/data/198b46b1f/83404869e0c643bdbb33b54821015892/FLAGdf403b435 [2022-11-16 12:44:21,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/data/198b46b1f/83404869e0c643bdbb33b54821015892 [2022-11-16 12:44:21,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:44:21,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:44:21,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:21,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:44:21,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:44:21,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:21" (1/1) ... [2022-11-16 12:44:21,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b77edb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:21, skipping insertion in model container [2022-11-16 12:44:21,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:21" (1/1) ... [2022-11-16 12:44:21,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:44:21,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:44:21,695 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_80601b8b-c59f-494f-b740-ddeba87aa27c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2022-11-16 12:44:21,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:21,931 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:44:21,992 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_80601b8b-c59f-494f-b740-ddeba87aa27c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2022-11-16 12:44:22,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:22,094 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:44:22,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22 WrapperNode [2022-11-16 12:44:22,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:22,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:22,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:44:22,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:44:22,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,227 INFO L138 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1145 [2022-11-16 12:44:22,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:22,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:44:22,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:44:22,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:44:22,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:44:22,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:44:22,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:44:22,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:44:22,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2022-11-16 12:44:22,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:44:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:22,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:22,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:44:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:44:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:44:22,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:44:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:44:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 12:44:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 12:44:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:44:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:44:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:44:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:44:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:44:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:44:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:44:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:44:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:44:22,779 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:44:22,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:44:25,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:44:25,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:44:25,046 INFO L300 CfgBuilder]: Removed 60 assume(true) statements. [2022-11-16 12:44:25,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:25 BoogieIcfgContainer [2022-11-16 12:44:25,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:44:25,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:44:25,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:44:25,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:44:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:44:21" (1/3) ... [2022-11-16 12:44:25,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3f6298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:25, skipping insertion in model container [2022-11-16 12:44:25,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (2/3) ... [2022-11-16 12:44:25,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3f6298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:25, skipping insertion in model container [2022-11-16 12:44:25,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:25" (3/3) ... [2022-11-16 12:44:25,063 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2022-11-16 12:44:25,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:44:25,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:44:25,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:44:25,156 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;@230dc4cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:44:25,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:44:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 187 states have (on average 1.6844919786096257) internal successors, (315), 198 states have internal predecessors, (315), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:44:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:44:25,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:25,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:25,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1484720594, now seen corresponding path program 1 times [2022-11-16 12:44:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:25,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905271683] [2022-11-16 12:44:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:25,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:25,410 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 12:44:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:25,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905271683] [2022-11-16 12:44:25,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905271683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:25,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:25,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110707683] [2022-11-16 12:44:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:25,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:25,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:25,453 INFO L87 Difference]: Start difference. First operand has 207 states, 187 states have (on average 1.6844919786096257) internal successors, (315), 198 states have internal predecessors, (315), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:25,591 INFO L93 Difference]: Finished difference Result 578 states and 987 transitions. [2022-11-16 12:44:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:25,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 12:44:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:25,608 INFO L225 Difference]: With dead ends: 578 [2022-11-16 12:44:25,608 INFO L226 Difference]: Without dead ends: 369 [2022-11-16 12:44:25,612 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 12:44:25,616 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 205 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:25,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 556 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:44:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-16 12:44:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 204. [2022-11-16 12:44:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 185 states have (on average 1.318918918918919) internal successors, (244), 195 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:44:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 276 transitions. [2022-11-16 12:44:25,693 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 276 transitions. Word has length 10 [2022-11-16 12:44:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:25,693 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 276 transitions. [2022-11-16 12:44:25,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 276 transitions. [2022-11-16 12:44:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 12:44:25,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:25,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:25,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:44:25,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1442249586, now seen corresponding path program 1 times [2022-11-16 12:44:25,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:25,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518731087] [2022-11-16 12:44:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:25,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:25,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:25,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365949271] [2022-11-16 12:44:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:25,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:25,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:25,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:25,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:44:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:27,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:44:27,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:27,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:27,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518731087] [2022-11-16 12:44:27,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:27,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365949271] [2022-11-16 12:44:27,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365949271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:27,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:27,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853604690] [2022-11-16 12:44:27,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:27,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:27,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:27,476 INFO L87 Difference]: Start difference. First operand 204 states and 276 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:27,618 INFO L93 Difference]: Finished difference Result 426 states and 580 transitions. [2022-11-16 12:44:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-16 12:44:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:27,621 INFO L225 Difference]: With dead ends: 426 [2022-11-16 12:44:27,621 INFO L226 Difference]: Without dead ends: 225 [2022-11-16 12:44:27,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 12:44:27,624 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 9 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:27,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 495 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:44:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-16 12:44:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2022-11-16 12:44:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 205 states have (on average 1.2878048780487805) internal successors, (264), 215 states have internal predecessors, (264), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:44:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 296 transitions. [2022-11-16 12:44:27,653 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 296 transitions. Word has length 108 [2022-11-16 12:44:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:27,653 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 296 transitions. [2022-11-16 12:44:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 296 transitions. [2022-11-16 12:44:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 12:44:27,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:27,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:27,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:27,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:27,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash 176725328, now seen corresponding path program 1 times [2022-11-16 12:44:27,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:27,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304382609] [2022-11-16 12:44:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:27,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:28,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:28,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159384233] [2022-11-16 12:44:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:28,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:28,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:28,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:28,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:44:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:29,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:44:29,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:29,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304382609] [2022-11-16 12:44:29,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:29,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159384233] [2022-11-16 12:44:29,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159384233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:29,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:29,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856930104] [2022-11-16 12:44:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:29,849 INFO L87 Difference]: Start difference. First operand 224 states and 296 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:29,968 INFO L93 Difference]: Finished difference Result 466 states and 620 transitions. [2022-11-16 12:44:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-16 12:44:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:29,971 INFO L225 Difference]: With dead ends: 466 [2022-11-16 12:44:29,972 INFO L226 Difference]: Without dead ends: 245 [2022-11-16 12:44:29,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 12:44:29,975 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 10 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:29,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 495 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:44:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-16 12:44:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2022-11-16 12:44:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 225 states have (on average 1.2622222222222221) internal successors, (284), 235 states have internal predecessors, (284), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:44:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2022-11-16 12:44:29,990 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 108 [2022-11-16 12:44:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:29,991 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2022-11-16 12:44:29,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2022-11-16 12:44:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 12:44:29,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:29,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:30,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:30,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:30,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash -509355828, now seen corresponding path program 1 times [2022-11-16 12:44:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:30,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590551852] [2022-11-16 12:44:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:30,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:30,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:30,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077875859] [2022-11-16 12:44:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:30,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:30,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:44:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:32,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:44:32,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:32,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:32,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:32,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590551852] [2022-11-16 12:44:32,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:32,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077875859] [2022-11-16 12:44:32,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077875859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:32,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:32,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:44:32,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972217015] [2022-11-16 12:44:32,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:32,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:32,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:32,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:32,168 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:32,277 INFO L93 Difference]: Finished difference Result 477 states and 621 transitions. [2022-11-16 12:44:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:44:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-16 12:44:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:32,281 INFO L225 Difference]: With dead ends: 477 [2022-11-16 12:44:32,281 INFO L226 Difference]: Without dead ends: 236 [2022-11-16 12:44:32,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:44:32,284 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 229 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:32,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 528 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:44:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-16 12:44:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2022-11-16 12:44:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 211 states have (on average 1.2464454976303319) internal successors, (263), 221 states have internal predecessors, (263), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:44:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 295 transitions. [2022-11-16 12:44:32,301 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 295 transitions. Word has length 108 [2022-11-16 12:44:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:32,302 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 295 transitions. [2022-11-16 12:44:32,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 295 transitions. [2022-11-16 12:44:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 12:44:32,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:32,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:32,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:32,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:32,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:32,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1901203458, now seen corresponding path program 1 times [2022-11-16 12:44:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:32,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845733032] [2022-11-16 12:44:32,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:32,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:32,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43322751] [2022-11-16 12:44:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:32,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:32,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:32,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:32,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:44:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:44:34,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:34,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:34,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:34,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845733032] [2022-11-16 12:44:34,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:34,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43322751] [2022-11-16 12:44:34,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43322751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:34,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:34,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:44:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933581235] [2022-11-16 12:44:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:34,610 INFO L87 Difference]: Start difference. First operand 230 states and 295 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:34,706 INFO L93 Difference]: Finished difference Result 536 states and 685 transitions. [2022-11-16 12:44:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:44:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-16 12:44:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:34,709 INFO L225 Difference]: With dead ends: 536 [2022-11-16 12:44:34,710 INFO L226 Difference]: Without dead ends: 309 [2022-11-16 12:44:34,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:44:34,712 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 222 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:34,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 762 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:44:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-16 12:44:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 216. [2022-11-16 12:44:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 197 states have (on average 1.2284263959390862) internal successors, (242), 207 states have internal predecessors, (242), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:44:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 274 transitions. [2022-11-16 12:44:34,727 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 274 transitions. Word has length 108 [2022-11-16 12:44:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:34,728 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 274 transitions. [2022-11-16 12:44:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 274 transitions. [2022-11-16 12:44:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 12:44:34,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:34,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:34,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:34,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1429056756, now seen corresponding path program 1 times [2022-11-16 12:44:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:34,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827149857] [2022-11-16 12:44:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:35,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:35,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686321036] [2022-11-16 12:44:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:35,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:35,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:35,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:35,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:44:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:44:37,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:37,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:37,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827149857] [2022-11-16 12:44:37,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:37,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686321036] [2022-11-16 12:44:37,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686321036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:37,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:44:37,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 12:44:37,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023816778] [2022-11-16 12:44:37,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:37,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:44:37,593 INFO L87 Difference]: Start difference. First operand 216 states and 274 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:37,750 INFO L93 Difference]: Finished difference Result 781 states and 975 transitions. [2022-11-16 12:44:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:44:37,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-16 12:44:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:37,755 INFO L225 Difference]: With dead ends: 781 [2022-11-16 12:44:37,755 INFO L226 Difference]: Without dead ends: 750 [2022-11-16 12:44:37,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:44:37,757 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 864 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:37,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1085 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:44:37,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-16 12:44:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2022-11-16 12:44:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 713 states have (on average 1.1977559607293127) internal successors, (854), 723 states have internal predecessors, (854), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-16 12:44:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 922 transitions. [2022-11-16 12:44:37,792 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 922 transitions. Word has length 108 [2022-11-16 12:44:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:37,793 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 922 transitions. [2022-11-16 12:44:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 922 transitions. [2022-11-16 12:44:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-16 12:44:37,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:37,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:37,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:38,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:38,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1476787366, now seen corresponding path program 2 times [2022-11-16 12:44:38,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126936301] [2022-11-16 12:44:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:38,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:38,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516012872] [2022-11-16 12:44:38,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:38,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:38,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:38,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:44:41,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:44:41,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:41,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2022-11-16 12:44:43,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:43,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126936301] [2022-11-16 12:44:43,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:43,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516012872] [2022-11-16 12:44:43,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516012872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:43,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:43,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:44:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930695702] [2022-11-16 12:44:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:43,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:43,335 INFO L87 Difference]: Start difference. First operand 750 states and 922 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:43,845 INFO L93 Difference]: Finished difference Result 1355 states and 1672 transitions. [2022-11-16 12:44:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2022-11-16 12:44:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:43,852 INFO L225 Difference]: With dead ends: 1355 [2022-11-16 12:44:43,852 INFO L226 Difference]: Without dead ends: 748 [2022-11-16 12:44:43,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:43,854 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 62 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:43,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 712 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:44:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-16 12:44:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-16 12:44:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 711 states have (on average 1.1969057665260197) internal successors, (851), 721 states have internal predecessors, (851), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-16 12:44:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 919 transitions. [2022-11-16 12:44:43,894 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 919 transitions. Word has length 402 [2022-11-16 12:44:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:43,896 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 919 transitions. [2022-11-16 12:44:43,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 919 transitions. [2022-11-16 12:44:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-16 12:44:43,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:43,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-16 12:44:43,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:44,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1113820770, now seen corresponding path program 1 times [2022-11-16 12:44:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:44,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792746165] [2022-11-16 12:44:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:44,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:44,880 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:44,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649673104] [2022-11-16 12:44:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:44,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:44,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:44,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:44,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:44:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:50,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 10819 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:44:50,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:44:51,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:44:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:52,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792746165] [2022-11-16 12:44:52,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:52,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649673104] [2022-11-16 12:44:52,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649673104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:52,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:44:52,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 12:44:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751240012] [2022-11-16 12:44:52,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:52,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:52,129 INFO L87 Difference]: Start difference. First operand 748 states and 919 transitions. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:44:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:52,649 INFO L93 Difference]: Finished difference Result 1847 states and 2271 transitions. [2022-11-16 12:44:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:44:52,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 417 [2022-11-16 12:44:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:52,661 INFO L225 Difference]: With dead ends: 1847 [2022-11-16 12:44:52,662 INFO L226 Difference]: Without dead ends: 1816 [2022-11-16 12:44:52,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:52,666 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2317 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:52,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2373 Valid, 2549 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:44:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-11-16 12:44:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1816. [2022-11-16 12:44:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1743 states have (on average 1.1904761904761905) internal successors, (2075), 1753 states have internal predecessors, (2075), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-16 12:44:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2215 transitions. [2022-11-16 12:44:52,760 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2215 transitions. Word has length 417 [2022-11-16 12:44:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:52,761 INFO L495 AbstractCegarLoop]: Abstraction has 1816 states and 2215 transitions. [2022-11-16 12:44:52,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:44:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2215 transitions. [2022-11-16 12:44:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2022-11-16 12:44:52,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:52,807 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2022-11-16 12:44:52,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:53,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:44:53,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -670751150, now seen corresponding path program 2 times [2022-11-16 12:44:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:53,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144258670] [2022-11-16 12:44:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:54,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:54,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661099139] [2022-11-16 12:44:54,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:54,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:54,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:54,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:54,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:45:07,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:45:07,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:45:07,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 28243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:45:07,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2022-11-16 12:45:07,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:45:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:07,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144258670] [2022-11-16 12:45:07,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:45:07,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661099139] [2022-11-16 12:45:07,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661099139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:07,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:07,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:45:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714404636] [2022-11-16 12:45:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:07,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:45:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:45:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:45:07,669 INFO L87 Difference]: Start difference. First operand 1816 states and 2215 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:45:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:45:07,753 INFO L93 Difference]: Finished difference Result 3574 states and 4364 transitions. [2022-11-16 12:45:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:45:07,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1005 [2022-11-16 12:45:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:45:07,761 INFO L225 Difference]: With dead ends: 3574 [2022-11-16 12:45:07,761 INFO L226 Difference]: Without dead ends: 1814 [2022-11-16 12:45:07,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1003 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 12:45:07,765 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 15 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:45:07,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 505 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:45:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-11-16 12:45:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1814. [2022-11-16 12:45:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1741 states have (on average 1.1901206203331418) internal successors, (2072), 1751 states have internal predecessors, (2072), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-16 12:45:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2212 transitions. [2022-11-16 12:45:07,833 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2212 transitions. Word has length 1005 [2022-11-16 12:45:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:45:07,834 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 2212 transitions. [2022-11-16 12:45:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:45:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2212 transitions. [2022-11-16 12:45:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2022-11-16 12:45:07,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:45:07,847 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:07,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:45:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:08,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:45:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1797840529, now seen corresponding path program 1 times [2022-11-16 12:45:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:08,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841833321] [2022-11-16 12:45:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:10,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:45:10,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254372039] [2022-11-16 12:45:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:10,279 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:45:10,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80601b8b-c59f-494f-b740-ddeba87aa27c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process