./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro --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 c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b --- 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-8393723 [2022-11-18 20:42:55,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:42:55,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:42:55,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:42:55,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:42:55,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:42:55,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:42:55,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:42:55,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:42:55,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:42:55,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:42:55,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:42:55,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:42:55,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:42:55,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:42:55,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:42:55,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:42:55,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:42:55,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:42:55,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:42:55,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:42:55,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:42:55,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:42:55,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:42:55,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:42:55,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:42:55,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:42:55,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:42:55,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:42:55,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:42:55,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:42:55,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:42:55,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:42:55,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:42:55,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:42:55,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:42:55,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:42:55,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:42:55,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:42:55,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:42:55,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:42:55,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:42:55,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:42:55,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:42:55,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:42:55,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:42:55,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:42:55,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:42:55,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:42:55,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:42:55,495 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:42:55,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:42:55,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:42:55,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:42:55,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:42:55,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:42:55,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:42:55,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:42:55,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:42:55,499 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:42:55,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:42:55,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:42:55,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:42:55,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:42:55,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:42:55,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:42:55,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:42:55,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:42:55,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:42:55,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:42:55,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:42:55,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:42:55,503 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:42:55,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:42:55,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:42:55,505 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_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b [2022-11-18 20:42:55,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:42:55,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:42:55,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:42:55,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:42:55,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:42:55,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2022-11-18 20:42:55,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/data/25fd02462/ab69a8b4a30d4f33aab5e68547a7b9b0/FLAG26cb39a16 [2022-11-18 20:42:56,754 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:42:56,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2022-11-18 20:42:56,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/data/25fd02462/ab69a8b4a30d4f33aab5e68547a7b9b0/FLAG26cb39a16 [2022-11-18 20:42:56,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/data/25fd02462/ab69a8b4a30d4f33aab5e68547a7b9b0 [2022-11-18 20:42:56,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:42:56,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:42:56,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:42:56,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:42:56,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:42:56,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:42:56" (1/1) ... [2022-11-18 20:42:56,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6086f87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:56, skipping insertion in model container [2022-11-18 20:42:56,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:42:56" (1/1) ... [2022-11-18 20:42:56,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:42:56,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:42:57,536 WARN L234 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_f252b808-0ecf-44ff-b489-5f3235d5185c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[33021,33034] [2022-11-18 20:42:57,782 WARN L234 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_f252b808-0ecf-44ff-b489-5f3235d5185c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[49681,49694] [2022-11-18 20:42:57,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:42:57,826 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:42:57,853 WARN L234 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_f252b808-0ecf-44ff-b489-5f3235d5185c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[33021,33034] [2022-11-18 20:42:57,974 WARN L234 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_f252b808-0ecf-44ff-b489-5f3235d5185c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[49681,49694] [2022-11-18 20:42:57,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:42:58,020 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:42:58,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58 WrapperNode [2022-11-18 20:42:58,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:42:58,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:42:58,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:42:58,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:42:58,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,191 INFO L138 Inliner]: procedures = 177, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1549 [2022-11-18 20:42:58,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:42:58,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:42:58,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:42:58,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:42:58,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:42:58,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:42:58,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:42:58,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:42:58,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (1/1) ... [2022-11-18 20:42:58,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:42:58,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:58,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:42:58,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:42:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:42:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:42:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:42:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:42:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 20:42:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 20:42:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:42:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:42:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:42:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:42:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-18 20:42:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:42:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:42:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:42:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:42:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:42:58,979 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:42:58,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:43:01,468 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:43:01,484 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:43:01,485 INFO L300 CfgBuilder]: Removed 92 assume(true) statements. [2022-11-18 20:43:01,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:43:01 BoogieIcfgContainer [2022-11-18 20:43:01,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:43:01,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:43:01,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:43:01,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:43:01,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:42:56" (1/3) ... [2022-11-18 20:43:01,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b0d736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:43:01, skipping insertion in model container [2022-11-18 20:43:01,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:58" (2/3) ... [2022-11-18 20:43:01,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b0d736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:43:01, skipping insertion in model container [2022-11-18 20:43:01,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:43:01" (3/3) ... [2022-11-18 20:43:01,503 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-2.i [2022-11-18 20:43:01,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:43:01,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:43:01,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:43:01,628 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;@e8d96a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:43:01,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:43:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 267 states have (on average 1.700374531835206) internal successors, (454), 274 states have internal predecessors, (454), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:43:01,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:01,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:01,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-11-18 20:43:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:01,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103972038] [2022-11-18 20:43:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:01,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:01,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125801517] [2022-11-18 20:43:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:01,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:01,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:01,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:43:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:02,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:43:02,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:02,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:02,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:02,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103972038] [2022-11-18 20:43:02,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:02,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125801517] [2022-11-18 20:43:02,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125801517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:02,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:02,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:43:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321595738] [2022-11-18 20:43:02,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:02,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:43:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:02,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:43:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:43:02,107 INFO L87 Difference]: Start difference. First operand has 283 states, 267 states have (on average 1.700374531835206) internal successors, (454), 274 states have internal predecessors, (454), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:02,201 INFO L93 Difference]: Finished difference Result 564 states and 955 transitions. [2022-11-18 20:43:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:43:02,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:43:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:02,222 INFO L225 Difference]: With dead ends: 564 [2022-11-18 20:43:02,223 INFO L226 Difference]: Without dead ends: 250 [2022-11-18 20:43:02,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:43:02,237 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:02,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:43:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-18 20:43:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-18 20:43:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-11-18 20:43:02,295 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-11-18 20:43:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:02,296 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-11-18 20:43:02,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-11-18 20:43:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:43:02,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:02,299 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] [2022-11-18 20:43:02,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:02,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:02,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-11-18 20:43:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:02,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621497214] [2022-11-18 20:43:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:02,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:02,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973038257] [2022-11-18 20:43:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:02,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:02,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:43:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:02,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:43:02,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:02,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:02,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621497214] [2022-11-18 20:43:02,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973038257] [2022-11-18 20:43:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973038257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:02,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:02,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:43:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745401243] [2022-11-18 20:43:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:02,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:43:02,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:43:02,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:02,877 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:02,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:02,962 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-11-18 20:43:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:43:02,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 20:43:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:02,967 INFO L225 Difference]: With dead ends: 565 [2022-11-18 20:43:02,967 INFO L226 Difference]: Without dead ends: 487 [2022-11-18 20:43:02,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:02,971 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:02,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:43:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-18 20:43:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-11-18 20:43:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-11-18 20:43:03,013 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-11-18 20:43:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:03,016 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-11-18 20:43:03,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-11-18 20:43:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:03,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:03,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:03,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:03,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:43:03,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-11-18 20:43:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:03,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245341106] [2022-11-18 20:43:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:03,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:03,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263670440] [2022-11-18 20:43:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:03,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:03,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:03,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:03,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:43:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:05,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:05,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:05,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:05,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:05,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245341106] [2022-11-18 20:43:05,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:05,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263670440] [2022-11-18 20:43:05,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263670440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:05,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:05,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:43:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183245483] [2022-11-18 20:43:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:05,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:43:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:43:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:05,185 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:05,312 INFO L93 Difference]: Finished difference Result 520 states and 692 transitions. [2022-11-18 20:43:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:43:05,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:05,315 INFO L225 Difference]: With dead ends: 520 [2022-11-18 20:43:05,315 INFO L226 Difference]: Without dead ends: 272 [2022-11-18 20:43:05,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:05,317 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 9 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 607 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 [2022-11-18 20:43:05,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-18 20:43:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-11-18 20:43:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 256 states have (on average 1.2890625) internal successors, (330), 262 states have internal predecessors, (330), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 352 transitions. [2022-11-18 20:43:05,331 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 352 transitions. Word has length 140 [2022-11-18 20:43:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:05,332 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 352 transitions. [2022-11-18 20:43:05,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 352 transitions. [2022-11-18 20:43:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:05,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:05,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:05,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:05,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:05,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1480126309, now seen corresponding path program 1 times [2022-11-18 20:43:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267350352] [2022-11-18 20:43:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:05,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:05,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418206883] [2022-11-18 20:43:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:05,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:05,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:43:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:07,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:07,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:07,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:07,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267350352] [2022-11-18 20:43:07,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418206883] [2022-11-18 20:43:07,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418206883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:07,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:07,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:43:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086068021] [2022-11-18 20:43:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:07,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:43:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:43:07,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:07,464 INFO L87 Difference]: Start difference. First operand 271 states and 352 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:07,575 INFO L93 Difference]: Finished difference Result 560 states and 732 transitions. [2022-11-18 20:43:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:43:07,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:07,589 INFO L225 Difference]: With dead ends: 560 [2022-11-18 20:43:07,589 INFO L226 Difference]: Without dead ends: 292 [2022-11-18 20:43:07,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:07,590 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 10 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 607 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 [2022-11-18 20:43:07,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-18 20:43:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2022-11-18 20:43:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 276 states have (on average 1.2681159420289856) internal successors, (350), 282 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 372 transitions. [2022-11-18 20:43:07,620 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 372 transitions. Word has length 140 [2022-11-18 20:43:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:07,621 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 372 transitions. [2022-11-18 20:43:07,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 372 transitions. [2022-11-18 20:43:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:07,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:07,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:07,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:07,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:07,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -4891625, now seen corresponding path program 1 times [2022-11-18 20:43:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:07,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332363343] [2022-11-18 20:43:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:07,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:08,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:08,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071160789] [2022-11-18 20:43:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:08,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:08,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:43:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:09,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:09,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:43:09,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332363343] [2022-11-18 20:43:09,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071160789] [2022-11-18 20:43:09,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071160789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:09,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:09,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:43:09,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678468894] [2022-11-18 20:43:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:43:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:43:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:09,940 INFO L87 Difference]: Start difference. First operand 291 states and 372 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:10,037 INFO L93 Difference]: Finished difference Result 389 states and 508 transitions. [2022-11-18 20:43:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:43:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:10,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:10,041 INFO L225 Difference]: With dead ends: 389 [2022-11-18 20:43:10,041 INFO L226 Difference]: Without dead ends: 312 [2022-11-18 20:43:10,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:10,042 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 9 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 607 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 [2022-11-18 20:43:10,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-18 20:43:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2022-11-18 20:43:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 296 states have (on average 1.25) internal successors, (370), 302 states have internal predecessors, (370), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 392 transitions. [2022-11-18 20:43:10,055 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 392 transitions. Word has length 140 [2022-11-18 20:43:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:10,056 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 392 transitions. [2022-11-18 20:43:10,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 392 transitions. [2022-11-18 20:43:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:10,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:10,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:10,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:10,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:10,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1989253081, now seen corresponding path program 1 times [2022-11-18 20:43:10,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:10,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118068842] [2022-11-18 20:43:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:10,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:10,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079943103] [2022-11-18 20:43:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:10,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:10,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:43:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:12,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:12,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:12,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:12,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:12,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118068842] [2022-11-18 20:43:12,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:12,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079943103] [2022-11-18 20:43:12,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079943103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:12,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:12,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:43:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006210827] [2022-11-18 20:43:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:43:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:43:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:43:12,568 INFO L87 Difference]: Start difference. First operand 311 states and 392 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:12,687 INFO L93 Difference]: Finished difference Result 611 states and 773 transitions. [2022-11-18 20:43:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:43:12,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:12,693 INFO L225 Difference]: With dead ends: 611 [2022-11-18 20:43:12,693 INFO L226 Difference]: Without dead ends: 303 [2022-11-18 20:43:12,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:43:12,697 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 295 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 635 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 [2022-11-18 20:43:12,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 635 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-18 20:43:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2022-11-18 20:43:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 282 states have (on average 1.2375886524822695) internal successors, (349), 288 states have internal predecessors, (349), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 371 transitions. [2022-11-18 20:43:12,724 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 371 transitions. Word has length 140 [2022-11-18 20:43:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:12,725 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 371 transitions. [2022-11-18 20:43:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 371 transitions. [2022-11-18 20:43:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:12,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:12,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:12,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:12,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:43:12,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1906468619, now seen corresponding path program 1 times [2022-11-18 20:43:12,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:12,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853817569] [2022-11-18 20:43:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:12,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:13,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:13,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520271222] [2022-11-18 20:43:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:13,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:13,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:13,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:43:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:15,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:15,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:15,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853817569] [2022-11-18 20:43:15,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520271222] [2022-11-18 20:43:15,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520271222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:15,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:15,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:43:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791948974] [2022-11-18 20:43:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:15,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:43:15,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:43:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:43:15,316 INFO L87 Difference]: Start difference. First operand 297 states and 371 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:15,452 INFO L93 Difference]: Finished difference Result 670 states and 837 transitions. [2022-11-18 20:43:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:43:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:15,457 INFO L225 Difference]: With dead ends: 670 [2022-11-18 20:43:15,457 INFO L226 Difference]: Without dead ends: 376 [2022-11-18 20:43:15,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:43:15,462 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 288 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 869 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 [2022-11-18 20:43:15,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 869 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-18 20:43:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 283. [2022-11-18 20:43:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 268 states have (on average 1.2238805970149254) internal successors, (328), 274 states have internal predecessors, (328), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 350 transitions. [2022-11-18 20:43:15,490 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 350 transitions. Word has length 140 [2022-11-18 20:43:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:15,492 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 350 transitions. [2022-11-18 20:43:15,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 350 transitions. [2022-11-18 20:43:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:15,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:15,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:15,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:15,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:15,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1296503321, now seen corresponding path program 1 times [2022-11-18 20:43:15,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:15,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000275346] [2022-11-18 20:43:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:16,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:16,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197984191] [2022-11-18 20:43:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:16,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:16,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:16,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:16,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:43:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:18,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:43:18,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:18,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:18,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000275346] [2022-11-18 20:43:18,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:18,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197984191] [2022-11-18 20:43:18,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197984191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:18,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:18,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:43:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095923162] [2022-11-18 20:43:18,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:43:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:43:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:43:18,117 INFO L87 Difference]: Start difference. First operand 283 states and 350 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:18,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:18,276 INFO L93 Difference]: Finished difference Result 371 states and 466 transitions. [2022-11-18 20:43:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:43:18,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:18,278 INFO L225 Difference]: With dead ends: 371 [2022-11-18 20:43:18,279 INFO L226 Difference]: Without dead ends: 274 [2022-11-18 20:43:18,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:43:18,280 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 88 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:18,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 801 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-18 20:43:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2022-11-18 20:43:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 254 states have (on average 1.2086614173228347) internal successors, (307), 260 states have internal predecessors, (307), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 329 transitions. [2022-11-18 20:43:18,292 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 329 transitions. Word has length 140 [2022-11-18 20:43:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:18,293 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 329 transitions. [2022-11-18 20:43:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 329 transitions. [2022-11-18 20:43:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:18,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:18,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:18,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:18,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:18,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1580490231, now seen corresponding path program 1 times [2022-11-18 20:43:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:18,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386520135] [2022-11-18 20:43:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:18,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:18,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:18,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689453006] [2022-11-18 20:43:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:18,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:18,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:18,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:43:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:21,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:43:21,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:43:21,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:21,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:21,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386520135] [2022-11-18 20:43:21,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:21,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689453006] [2022-11-18 20:43:21,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689453006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:21,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:21,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:43:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000746263] [2022-11-18 20:43:21,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:43:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:43:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:43:21,169 INFO L87 Difference]: Start difference. First operand 269 states and 329 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:21,241 INFO L93 Difference]: Finished difference Result 347 states and 425 transitions. [2022-11-18 20:43:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:43:21,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:21,244 INFO L225 Difference]: With dead ends: 347 [2022-11-18 20:43:21,244 INFO L226 Difference]: Without dead ends: 264 [2022-11-18 20:43:21,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:43:21,245 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 63 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:21,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 795 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:43:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-18 20:43:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2022-11-18 20:43:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.1959183673469387) internal successors, (293), 251 states have internal predecessors, (293), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:43:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 315 transitions. [2022-11-18 20:43:21,258 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 315 transitions. Word has length 140 [2022-11-18 20:43:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:21,258 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 315 transitions. [2022-11-18 20:43:21,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 315 transitions. [2022-11-18 20:43:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:43:21,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:21,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:21,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:21,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash 413654475, now seen corresponding path program 1 times [2022-11-18 20:43:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:21,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880893972] [2022-11-18 20:43:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:21,711 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:21,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330224861] [2022-11-18 20:43:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:21,713 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:21,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:43:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:43:24,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:24,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880893972] [2022-11-18 20:43:25,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:25,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330224861] [2022-11-18 20:43:25,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330224861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:25,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:25,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 20:43:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109806931] [2022-11-18 20:43:25,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:43:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:43:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:43:25,024 INFO L87 Difference]: Start difference. First operand 260 states and 315 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:25,277 INFO L93 Difference]: Finished difference Result 1005 states and 1227 transitions. [2022-11-18 20:43:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:43:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 20:43:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:25,285 INFO L225 Difference]: With dead ends: 1005 [2022-11-18 20:43:25,285 INFO L226 Difference]: Without dead ends: 930 [2022-11-18 20:43:25,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:43:25,287 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1243 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:25,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1184 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:43:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-18 20:43:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 794. [2022-11-18 20:43:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 761 states have (on average 1.1892247043363995) internal successors, (905), 767 states have internal predecessors, (905), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-18 20:43:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 963 transitions. [2022-11-18 20:43:25,347 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 963 transitions. Word has length 140 [2022-11-18 20:43:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:25,348 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 963 transitions. [2022-11-18 20:43:25,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 963 transitions. [2022-11-18 20:43:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-18 20:43:25,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:25,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:25,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:25,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:43:25,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1488887653, now seen corresponding path program 2 times [2022-11-18 20:43:25,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:25,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490746860] [2022-11-18 20:43:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:25,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:26,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:26,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41308783] [2022-11-18 20:43:26,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:43:26,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:26,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:26,495 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:26,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:43:32,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:43:32,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:32,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 11749 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:43:32,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:33,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490746860] [2022-11-18 20:43:34,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41308783] [2022-11-18 20:43:34,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41308783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:34,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:34,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-18 20:43:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510452082] [2022-11-18 20:43:34,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:34,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:43:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:43:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:43:34,169 INFO L87 Difference]: Start difference. First operand 794 states and 963 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:34,780 INFO L93 Difference]: Finished difference Result 2277 states and 2781 transitions. [2022-11-18 20:43:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:43:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434 [2022-11-18 20:43:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:34,793 INFO L225 Difference]: With dead ends: 2277 [2022-11-18 20:43:34,793 INFO L226 Difference]: Without dead ends: 2202 [2022-11-18 20:43:34,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:43:34,796 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 3171 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:34,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3261 Valid, 3015 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:43:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-11-18 20:43:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1862. [2022-11-18 20:43:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1793 states have (on average 1.1873954266592304) internal successors, (2129), 1799 states have internal predecessors, (2129), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-18 20:43:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2259 transitions. [2022-11-18 20:43:34,880 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2259 transitions. Word has length 434 [2022-11-18 20:43:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:34,881 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2259 transitions. [2022-11-18 20:43:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2259 transitions. [2022-11-18 20:43:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2022-11-18 20:43:34,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:34,928 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, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:34,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:43:35,148 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash -268896231, now seen corresponding path program 3 times [2022-11-18 20:43:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:35,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733851131] [2022-11-18 20:43:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:37,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:37,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752960520] [2022-11-18 20:43:37,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:43:37,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:37,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:37,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:43:44,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:43:44,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:44,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:43:44,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 3852 trivial. 0 not checked. [2022-11-18 20:43:49,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:43:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:49,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733851131] [2022-11-18 20:43:49,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:43:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752960520] [2022-11-18 20:43:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752960520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:49,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:49,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:43:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600661388] [2022-11-18 20:43:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:43:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:43:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:49,210 INFO L87 Difference]: Start difference. First operand 1862 states and 2259 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:49,368 INFO L93 Difference]: Finished difference Result 3666 states and 4452 transitions. [2022-11-18 20:43:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:43:49,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1022 [2022-11-18 20:43:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:49,380 INFO L225 Difference]: With dead ends: 3666 [2022-11-18 20:43:49,381 INFO L226 Difference]: Without dead ends: 1860 [2022-11-18 20:43:49,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:49,388 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 15 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:49,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 587 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:43:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-11-18 20:43:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1860. [2022-11-18 20:43:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1791 states have (on average 1.1870463428252374) internal successors, (2126), 1797 states have internal predecessors, (2126), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-18 20:43:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2256 transitions. [2022-11-18 20:43:49,492 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2256 transitions. Word has length 1022 [2022-11-18 20:43:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:49,492 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 2256 transitions. [2022-11-18 20:43:49,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2256 transitions. [2022-11-18 20:43:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-11-18 20:43:49,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:49,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:49,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:49,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:43:49,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1557386042, now seen corresponding path program 1 times [2022-11-18 20:43:49,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:49,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862449413] [2022-11-18 20:43:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:49,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:51,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:43:51,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522823106] [2022-11-18 20:43:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:51,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:51,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:51,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:44:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:07,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 28310 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:44:07,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 730 proven. 0 refuted. 0 times theorem prover too weak. 3676 trivial. 0 not checked. [2022-11-18 20:44:08,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:44:08,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862449413] [2022-11-18 20:44:08,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522823106] [2022-11-18 20:44:08,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522823106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:08,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:08,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:44:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956713906] [2022-11-18 20:44:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:44:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:44:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:44:08,311 INFO L87 Difference]: Start difference. First operand 1860 states and 2256 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:44:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:08,447 INFO L93 Difference]: Finished difference Result 3629 states and 4406 transitions. [2022-11-18 20:44:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:44:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1037 [2022-11-18 20:44:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:08,455 INFO L225 Difference]: With dead ends: 3629 [2022-11-18 20:44:08,456 INFO L226 Difference]: Without dead ends: 1910 [2022-11-18 20:44:08,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:44:08,461 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 105 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:08,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 622 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-11-18 20:44:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1908. [2022-11-18 20:44:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1834 states have (on average 1.1853871319520175) internal successors, (2174), 1845 states have internal predecessors, (2174), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-18 20:44:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2314 transitions. [2022-11-18 20:44:08,649 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2314 transitions. Word has length 1037 [2022-11-18 20:44:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:08,650 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 2314 transitions. [2022-11-18 20:44:08,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:44:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2314 transitions. [2022-11-18 20:44:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2022-11-18 20:44:08,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:08,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:08,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:08,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:44:08,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1732691376, now seen corresponding path program 1 times [2022-11-18 20:44:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:08,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274684138] [2022-11-18 20:44:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:10,987 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:10,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023383125] [2022-11-18 20:44:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:10,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:10,995 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:11,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:44:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:28,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 27447 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:44:28,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 1431 proven. 0 refuted. 0 times theorem prover too weak. 2977 trivial. 0 not checked. [2022-11-18 20:44:32,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:44:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274684138] [2022-11-18 20:44:32,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023383125] [2022-11-18 20:44:32,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023383125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:32,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:32,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:44:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042412235] [2022-11-18 20:44:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:44:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:44:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:44:32,728 INFO L87 Difference]: Start difference. First operand 1908 states and 2314 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:44:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:32,918 INFO L93 Difference]: Finished difference Result 4737 states and 5750 transitions. [2022-11-18 20:44:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:44:32,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1052 [2022-11-18 20:44:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:32,934 INFO L225 Difference]: With dead ends: 4737 [2022-11-18 20:44:32,934 INFO L226 Difference]: Without dead ends: 3317 [2022-11-18 20:44:32,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:44:32,940 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 127 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:32,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 734 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2022-11-18 20:44:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 3315. [2022-11-18 20:44:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3208 states have (on average 1.186720698254364) internal successors, (3807), 3219 states have internal predecessors, (3807), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-18 20:44:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4013 transitions. [2022-11-18 20:44:33,106 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4013 transitions. Word has length 1052 [2022-11-18 20:44:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:33,108 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4013 transitions. [2022-11-18 20:44:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:44:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4013 transitions. [2022-11-18 20:44:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2022-11-18 20:44:33,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:33,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:33,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:33,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:33,355 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash 118894542, now seen corresponding path program 1 times [2022-11-18 20:44:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:33,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018590021] [2022-11-18 20:44:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:35,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891641067] [2022-11-18 20:44:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:35,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:35,648 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:35,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f252b808-0ecf-44ff-b489-5f3235d5185c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process