./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8 --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 d00a4e4676c9051eb624340f361fec0d607bdb13ab2955b117561fab63156730 --- 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-2329fc7 [2022-12-13 19:20:59,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:20:59,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:20:59,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:20:59,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:20:59,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:20:59,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:20:59,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:20:59,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:20:59,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:20:59,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:20:59,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:20:59,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:20:59,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:20:59,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:20:59,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:20:59,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:20:59,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:20:59,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:20:59,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:20:59,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:20:59,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:20:59,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:20:59,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:20:59,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:20:59,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:20:59,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:20:59,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:20:59,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:20:59,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:20:59,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:20:59,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:20:59,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:20:59,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:20:59,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:20:59,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:20:59,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:20:59,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:20:59,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:20:59,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:20:59,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:20:59,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:20:59,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:20:59,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:20:59,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:20:59,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:20:59,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:20:59,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:20:59,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:20:59,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:20:59,867 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:20:59,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:20:59,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:20:59,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:20:59,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:20:59,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:20:59,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:20:59,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:20:59,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:20:59,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:20:59,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:20:59,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:20:59,870 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:20:59,871 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d00a4e4676c9051eb624340f361fec0d607bdb13ab2955b117561fab63156730 [2022-12-13 19:21:00,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:21:00,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:21:00,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:21:00,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:21:00,058 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:21:00,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-crafted/mapsum4.i [2022-12-13 19:21:02,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:21:02,695 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:21:02,696 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/sv-benchmarks/c/array-crafted/mapsum4.i [2022-12-13 19:21:02,701 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/data/313e2f907/a934a266fe024ee6a259548607b32dbe/FLAG67c696bce [2022-12-13 19:21:03,114 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/data/313e2f907/a934a266fe024ee6a259548607b32dbe [2022-12-13 19:21:03,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:21:03,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:21:03,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:21:03,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:21:03,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:21:03,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76798620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03, skipping insertion in model container [2022-12-13 19:21:03,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:21:03,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:21:03,245 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/sv-benchmarks/c/array-crafted/mapsum4.i[1318,1331] [2022-12-13 19:21:03,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:21:03,254 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:21:03,267 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/sv-benchmarks/c/array-crafted/mapsum4.i[1318,1331] [2022-12-13 19:21:03,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:21:03,276 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:21:03,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03 WrapperNode [2022-12-13 19:21:03,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:21:03,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:21:03,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:21:03,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:21:03,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,299 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-12-13 19:21:03,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:21:03,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:21:03,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:21:03,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:21:03,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:21:03,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:21:03,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:21:03,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:21:03,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (1/1) ... [2022-12-13 19:21:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:21:03,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:03,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:21:03,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:21:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:21:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-12-13 19:21:03,379 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-12-13 19:21:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:21:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:21:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:21:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:21:03,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:21:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:21:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:21:03,438 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:21:03,440 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:21:03,566 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:21:03,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:21:03,572 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 19:21:03,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:21:03 BoogieIcfgContainer [2022-12-13 19:21:03,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:21:03,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:21:03,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:21:03,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:21:03,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:21:03" (1/3) ... [2022-12-13 19:21:03,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faf2303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:21:03, skipping insertion in model container [2022-12-13 19:21:03,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:21:03" (2/3) ... [2022-12-13 19:21:03,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faf2303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:21:03, skipping insertion in model container [2022-12-13 19:21:03,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:21:03" (3/3) ... [2022-12-13 19:21:03,583 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum4.i [2022-12-13 19:21:03,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:21:03,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:21:03,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:21:03,653 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;@67205034, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:21:03,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:21:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 19:21:03,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:03,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:03,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2022-12-13 19:21:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:03,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248723743] [2022-12-13 19:21:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:03,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:21:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:21:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 19:21:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:21:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248723743] [2022-12-13 19:21:03,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248723743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:03,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565552797] [2022-12-13 19:21:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:03,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:03,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:03,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:03,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:21:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:21:04,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 19:21:04,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:21:04,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565552797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:04,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:21:04,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 19:21:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115859828] [2022-12-13 19:21:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:04,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:04,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:21:04,094 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 19:21:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:04,123 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-12-13 19:21:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:21:04,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-13 19:21:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:04,131 INFO L225 Difference]: With dead ends: 50 [2022-12-13 19:21:04,131 INFO L226 Difference]: Without dead ends: 24 [2022-12-13 19:21:04,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:21:04,137 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:04,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-13 19:21:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-13 19:21:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-13 19:21:04,172 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-12-13 19:21:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:04,173 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-13 19:21:04,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 19:21:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-13 19:21:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 19:21:04,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:04,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:04,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:21:04,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:04,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2022-12-13 19:21:04,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:04,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344556195] [2022-12-13 19:21:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 19:21:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:21:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 19:21:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 19:21:04,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:04,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344556195] [2022-12-13 19:21:04,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344556195] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:04,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993208354] [2022-12-13 19:21:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:04,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:04,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:04,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:04,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:21:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:21:04,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:21:04,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:21:04,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993208354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:04,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:21:04,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 19:21:04,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391195410] [2022-12-13 19:21:04,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:04,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:04,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:21:04,659 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:21:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:04,668 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-12-13 19:21:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:21:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 19:21:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:04,669 INFO L225 Difference]: With dead ends: 42 [2022-12-13 19:21:04,669 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 19:21:04,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:21:04,670 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:04,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 19:21:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-13 19:21:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-13 19:21:04,674 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-12-13 19:21:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:04,674 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-13 19:21:04,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:21:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-13 19:21:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 19:21:04,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:04,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:04,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:21:04,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:04,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2022-12-13 19:21:04,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:04,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665082308] [2022-12-13 19:21:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:04,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 19:21:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:21:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:21:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:21:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:05,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665082308] [2022-12-13 19:21:05,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665082308] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:05,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879729406] [2022-12-13 19:21:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:05,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:05,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:05,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:05,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:21:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:21:05,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 19:21:05,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:21:05,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879729406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:05,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:21:05,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 19:21:05,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436844324] [2022-12-13 19:21:05,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:05,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:05,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:21:05,157 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:21:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:05,167 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-12-13 19:21:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:21:05,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-12-13 19:21:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:05,169 INFO L225 Difference]: With dead ends: 39 [2022-12-13 19:21:05,169 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 19:21:05,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:21:05,170 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:05,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 19:21:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-12-13 19:21:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-12-13 19:21:05,173 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-12-13 19:21:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:05,174 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-12-13 19:21:05,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:21:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-12-13 19:21:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 19:21:05,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:05,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:05,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:21:05,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:05,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:05,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2022-12-13 19:21:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:05,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815507379] [2022-12-13 19:21:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 19:21:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:21:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 19:21:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 19:21:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:05,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815507379] [2022-12-13 19:21:05,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815507379] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:05,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397188186] [2022-12-13 19:21:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:05,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:05,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:05,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:21:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:05,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:21:05,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 19:21:05,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 19:21:05,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397188186] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:05,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:05,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-12-13 19:21:05,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370123894] [2022-12-13 19:21:05,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:21:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:21:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:21:05,683 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 19:21:05,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:05,714 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-12-13 19:21:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:21:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-12-13 19:21:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:05,715 INFO L225 Difference]: With dead ends: 54 [2022-12-13 19:21:05,715 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 19:21:05,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:21:05,717 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:05,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 19:21:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-12-13 19:21:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-12-13 19:21:05,721 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-12-13 19:21:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:05,721 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-12-13 19:21:05,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 19:21:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-12-13 19:21:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 19:21:05,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:05,723 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:05,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:21:05,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:05,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1299679203, now seen corresponding path program 2 times [2022-12-13 19:21:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:05,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117676513] [2022-12-13 19:21:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:21:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:21:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:21:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 19:21:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:06,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117676513] [2022-12-13 19:21:06,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117676513] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:06,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756584692] [2022-12-13 19:21:06,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:21:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:06,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:06,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:21:06,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:21:06,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:06,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:21:06,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 19:21:06,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 19:21:06,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756584692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:06,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:06,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 19:21:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494484073] [2022-12-13 19:21:06,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:06,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:21:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:21:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:21:06,283 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:21:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:06,327 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-12-13 19:21:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:21:06,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-12-13 19:21:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:06,328 INFO L225 Difference]: With dead ends: 70 [2022-12-13 19:21:06,328 INFO L226 Difference]: Without dead ends: 48 [2022-12-13 19:21:06,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:21:06,330 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:06,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-13 19:21:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-12-13 19:21:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-12-13 19:21:06,336 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-12-13 19:21:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:06,337 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-12-13 19:21:06,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:21:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-12-13 19:21:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 19:21:06,338 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:06,339 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:06,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:21:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:06,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash 936210247, now seen corresponding path program 3 times [2022-12-13 19:21:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:06,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057500510] [2022-12-13 19:21:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:21:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 19:21:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:21:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 19:21:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:06,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057500510] [2022-12-13 19:21:06,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057500510] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:06,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644920239] [2022-12-13 19:21:06,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:21:06,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:06,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:21:06,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:21:06,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:06,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:21:06,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-12-13 19:21:06,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-12-13 19:21:06,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644920239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:06,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:06,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-12-13 19:21:06,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321088933] [2022-12-13 19:21:06,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:06,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 19:21:06,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 19:21:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:21:06,900 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:06,951 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2022-12-13 19:21:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:21:06,951 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-12-13 19:21:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:06,952 INFO L225 Difference]: With dead ends: 82 [2022-12-13 19:21:06,952 INFO L226 Difference]: Without dead ends: 58 [2022-12-13 19:21:06,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:21:06,953 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:06,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-13 19:21:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-12-13 19:21:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-12-13 19:21:06,958 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 64 [2022-12-13 19:21:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:06,959 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-12-13 19:21:06,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-12-13 19:21:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 19:21:06,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:06,960 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:06,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:21:07,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:07,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash 161581377, now seen corresponding path program 4 times [2022-12-13 19:21:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:07,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797815496] [2022-12-13 19:21:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:21:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:21:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:21:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-12-13 19:21:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:07,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797815496] [2022-12-13 19:21:07,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797815496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:07,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663369864] [2022-12-13 19:21:07,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:21:07,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:07,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:07,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:07,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:21:07,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:21:07,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:07,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:21:07,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 178 proven. 4 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-13 19:21:07,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-12-13 19:21:07,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663369864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:07,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:07,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2022-12-13 19:21:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128643603] [2022-12-13 19:21:07,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:21:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:21:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:21:07,643 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:07,696 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-12-13 19:21:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:21:07,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 90 [2022-12-13 19:21:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:07,697 INFO L225 Difference]: With dead ends: 100 [2022-12-13 19:21:07,697 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 19:21:07,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:21:07,698 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:07,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:21:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 19:21:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-12-13 19:21:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-12-13 19:21:07,703 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 90 [2022-12-13 19:21:07,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:07,703 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-12-13 19:21:07,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-12-13 19:21:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 19:21:07,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:07,704 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:07,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:21:07,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 19:21:07,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:07,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1010910917, now seen corresponding path program 5 times [2022-12-13 19:21:07,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:07,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838421992] [2022-12-13 19:21:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:07,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 19:21:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 19:21:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:21:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-12-13 19:21:08,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838421992] [2022-12-13 19:21:08,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838421992] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88889955] [2022-12-13 19:21:08,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:21:08,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:08,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:08,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:21:08,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-12-13 19:21:08,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:08,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:21:08,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-12-13 19:21:08,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 19:21:09,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88889955] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:09,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:09,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2022-12-13 19:21:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942541644] [2022-12-13 19:21:09,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 19:21:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 19:21:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-12-13 19:21:09,020 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:09,095 INFO L93 Difference]: Finished difference Result 126 states and 145 transitions. [2022-12-13 19:21:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 19:21:09,096 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 100 [2022-12-13 19:21:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:09,097 INFO L225 Difference]: With dead ends: 126 [2022-12-13 19:21:09,097 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 19:21:09,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-12-13 19:21:09,098 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:09,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:21:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 19:21:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-12-13 19:21:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-12-13 19:21:09,103 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 100 [2022-12-13 19:21:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:09,103 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-12-13 19:21:09,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-12-13 19:21:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 19:21:09,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:09,105 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 13, 13, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:09,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:21:09,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:09,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1009519917, now seen corresponding path program 6 times [2022-12-13 19:21:09,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:09,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35797940] [2022-12-13 19:21:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:21:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:21:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 19:21:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-12-13 19:21:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:09,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35797940] [2022-12-13 19:21:09,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35797940] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:09,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143227612] [2022-12-13 19:21:09,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 19:21:09,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:09,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:09,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:09,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:21:10,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-12-13 19:21:10,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:10,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:21:10,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2022-12-13 19:21:10,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2022-12-13 19:21:10,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143227612] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:10,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:10,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2022-12-13 19:21:10,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626421769] [2022-12-13 19:21:10,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:10,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 19:21:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 19:21:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:21:10,241 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:10,318 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-12-13 19:21:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 19:21:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-12-13 19:21:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:10,320 INFO L225 Difference]: With dead ends: 160 [2022-12-13 19:21:10,320 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 19:21:10,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:21:10,322 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:10,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 120 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:21:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 19:21:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-12-13 19:21:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-12-13 19:21:10,331 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 150 [2022-12-13 19:21:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:10,331 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-12-13 19:21:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-12-13 19:21:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-13 19:21:10,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:10,334 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:10,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:21:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 19:21:10,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -794036833, now seen corresponding path program 7 times [2022-12-13 19:21:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:10,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919110077] [2022-12-13 19:21:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:21:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:21:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:21:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:10,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919110077] [2022-12-13 19:21:10,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919110077] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:10,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275134472] [2022-12-13 19:21:10,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 19:21:10,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:10,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:10,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:21:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:11,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:21:11,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:11,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:11,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275134472] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:11,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:11,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-12-13 19:21:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192605909] [2022-12-13 19:21:11,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:11,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 19:21:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 19:21:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 19:21:11,336 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 33 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 33 states have internal predecessors, (85), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 19:21:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:11,405 INFO L93 Difference]: Finished difference Result 207 states and 230 transitions. [2022-12-13 19:21:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 19:21:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 33 states have internal predecessors, (85), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 168 [2022-12-13 19:21:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:11,407 INFO L225 Difference]: With dead ends: 207 [2022-12-13 19:21:11,407 INFO L226 Difference]: Without dead ends: 135 [2022-12-13 19:21:11,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 19:21:11,408 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:11,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 112 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:21:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-13 19:21:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-12-13 19:21:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2022-12-13 19:21:11,415 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 168 [2022-12-13 19:21:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:11,415 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2022-12-13 19:21:11,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 33 states have internal predecessors, (85), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 19:21:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2022-12-13 19:21:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-12-13 19:21:11,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:11,417 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 30, 30, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:11,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:21:11,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:11,619 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1814541889, now seen corresponding path program 8 times [2022-12-13 19:21:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:11,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096636625] [2022-12-13 19:21:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:11,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 19:21:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 19:21:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 19:21:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:12,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:12,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096636625] [2022-12-13 19:21:12,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096636625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:12,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076857374] [2022-12-13 19:21:12,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:21:12,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:12,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:12,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:21:12,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:21:12,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:12,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 19:21:12,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:12,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:13,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076857374] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:13,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:13,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2022-12-13 19:21:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978279815] [2022-12-13 19:21:13,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:13,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-13 19:21:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-13 19:21:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 19:21:13,701 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 65 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 19:21:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:13,846 INFO L93 Difference]: Finished difference Result 271 states and 310 transitions. [2022-12-13 19:21:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 19:21:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 65 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 200 [2022-12-13 19:21:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:13,848 INFO L225 Difference]: With dead ends: 271 [2022-12-13 19:21:13,848 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 19:21:13,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 19:21:13,850 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:13,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 178 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:21:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 19:21:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-12-13 19:21:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 1.0154639175257731) internal successors, (197), 194 states have internal predecessors, (197), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2022-12-13 19:21:13,861 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 200 [2022-12-13 19:21:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:13,862 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2022-12-13 19:21:13,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 65 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 19:21:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2022-12-13 19:21:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-12-13 19:21:13,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:13,866 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:13,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:21:14,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:14,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:14,069 INFO L85 PathProgramCache]: Analyzing trace with hash 438792703, now seen corresponding path program 9 times [2022-12-13 19:21:14,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:14,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611004975] [2022-12-13 19:21:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:14,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:21:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 19:21:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-12-13 19:21:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5903 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-12-13 19:21:16,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:16,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611004975] [2022-12-13 19:21:16,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611004975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:16,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291640601] [2022-12-13 19:21:16,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:21:16,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:16,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:16,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:21:19,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-12-13 19:21:19,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:19,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:21:19,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5903 backedges. 848 proven. 196 refuted. 0 times theorem prover too weak. 4859 trivial. 0 not checked. [2022-12-13 19:21:19,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5903 backedges. 848 proven. 196 refuted. 0 times theorem prover too weak. 4859 trivial. 0 not checked. [2022-12-13 19:21:20,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291640601] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:20,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:20,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 17, 17] total 95 [2022-12-13 19:21:20,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323239260] [2022-12-13 19:21:20,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:20,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-12-13 19:21:20,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-12-13 19:21:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2575, Invalid=6355, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 19:21:20,172 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand has 95 states, 95 states have (on average 2.2526315789473683) internal successors, (214), 95 states have internal predecessors, (214), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:20,353 INFO L93 Difference]: Finished difference Result 306 states and 333 transitions. [2022-12-13 19:21:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-13 19:21:20,354 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.2526315789473683) internal successors, (214), 95 states have internal predecessors, (214), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 264 [2022-12-13 19:21:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:20,355 INFO L225 Difference]: With dead ends: 306 [2022-12-13 19:21:20,355 INFO L226 Difference]: Without dead ends: 234 [2022-12-13 19:21:20,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2575, Invalid=6355, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 19:21:20,358 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:20,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:21:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-12-13 19:21:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-12-13 19:21:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.013157894736842) internal successors, (231), 228 states have internal predecessors, (231), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2022-12-13 19:21:20,368 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 264 [2022-12-13 19:21:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:20,369 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 237 transitions. [2022-12-13 19:21:20,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.2526315789473683) internal successors, (214), 95 states have internal predecessors, (214), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 237 transitions. [2022-12-13 19:21:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-12-13 19:21:20,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:20,375 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 63, 63, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:20,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:21:20,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 19:21:20,577 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1765547295, now seen corresponding path program 10 times [2022-12-13 19:21:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:20,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030982691] [2022-12-13 19:21:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 19:21:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-12-13 19:21:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-12-13 19:21:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12460 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 8491 trivial. 0 not checked. [2022-12-13 19:21:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:22,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030982691] [2022-12-13 19:21:22,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030982691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:22,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024162426] [2022-12-13 19:21:22,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:21:22,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:22,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:22,875 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:22,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:21:23,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:21:23,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:21:23,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 19:21:23,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12460 backedges. 5591 proven. 900 refuted. 0 times theorem prover too weak. 5969 trivial. 0 not checked. [2022-12-13 19:21:24,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12460 backedges. 1864 proven. 2764 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2022-12-13 19:21:25,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024162426] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:25,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:25,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 33, 33] total 128 [2022-12-13 19:21:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786559758] [2022-12-13 19:21:25,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:25,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-12-13 19:21:25,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-12-13 19:21:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2022-12-13 19:21:25,469 INFO L87 Difference]: Start difference. First operand 233 states and 237 transitions. Second operand has 128 states, 128 states have (on average 2.1796875) internal successors, (279), 128 states have internal predecessors, (279), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:21:25,713 INFO L93 Difference]: Finished difference Result 404 states and 447 transitions. [2022-12-13 19:21:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-12-13 19:21:25,713 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.1796875) internal successors, (279), 128 states have internal predecessors, (279), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 362 [2022-12-13 19:21:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:21:25,714 INFO L225 Difference]: With dead ends: 404 [2022-12-13 19:21:25,714 INFO L226 Difference]: Without dead ends: 300 [2022-12-13 19:21:25,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2022-12-13 19:21:25,717 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:21:25,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 202 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:21:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-12-13 19:21:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2022-12-13 19:21:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.010204081632653) internal successors, (297), 294 states have internal predecessors, (297), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:21:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 303 transitions. [2022-12-13 19:21:25,724 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 303 transitions. Word has length 362 [2022-12-13 19:21:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:21:25,724 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 303 transitions. [2022-12-13 19:21:25,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.1796875) internal successors, (279), 128 states have internal predecessors, (279), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:21:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 303 transitions. [2022-12-13 19:21:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-12-13 19:21:25,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:21:25,726 INFO L195 NwaCegarLoop]: trace histogram [186, 186, 64, 64, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:25,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 19:21:25,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 19:21:25,928 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:21:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1972129571, now seen corresponding path program 11 times [2022-12-13 19:21:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242633971] [2022-12-13 19:21:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:21:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-12-13 19:21:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-12-13 19:21:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 39275 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 35179 trivial. 0 not checked. [2022-12-13 19:21:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:28,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242633971] [2022-12-13 19:21:28,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242633971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137714324] [2022-12-13 19:21:28,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:21:28,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:28,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:28,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:28,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28c77f52-85c9-4085-a8ed-68099b8e7115/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process