./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum_const5.c --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_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/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_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_const5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/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_73d5b0a3-bab2-477f-99b7-dea0a330e53d/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 e6c0909fc593366247feb227b85c6733aa1dfc9c572e69f3a5aa951fa82d0326 --- 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 13:47:59,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:47:59,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:47:59,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:47:59,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:47:59,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:47:59,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:47:59,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:47:59,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:47:59,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:47:59,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:47:59,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:47:59,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:47:59,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:47:59,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:47:59,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:47:59,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:47:59,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:47:59,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:47:59,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:47:59,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:47:59,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:47:59,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:47:59,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:47:59,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:47:59,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:47:59,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:47:59,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:47:59,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:47:59,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:47:59,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:47:59,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:47:59,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:47:59,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:47:59,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:47:59,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:47:59,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:47:59,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:47:59,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:47:59,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:47:59,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:47:59,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:47:59,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:47:59,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:47:59,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:47:59,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:47:59,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:47:59,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:47:59,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:47:59,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:47:59,185 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:47:59,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:47:59,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:47:59,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:47:59,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:47:59,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:47:59,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:47:59,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:47:59,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:47:59,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:47:59,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:47:59,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:47:59,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:47:59,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:47:59,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:47:59,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:47:59,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:47:59,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:47:59,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:47:59,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:47:59,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:47:59,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:47:59,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:47:59,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:47:59,190 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:47:59,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:47:59,190 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:47:59,190 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_73d5b0a3-bab2-477f-99b7-dea0a330e53d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6c0909fc593366247feb227b85c6733aa1dfc9c572e69f3a5aa951fa82d0326 [2022-12-13 13:47:59,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:47:59,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:47:59,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:47:59,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:47:59,439 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:47:59,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-crafted/zero_sum_const5.c [2022-12-13 13:48:01,959 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:48:02,108 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:48:02,108 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/sv-benchmarks/c/array-crafted/zero_sum_const5.c [2022-12-13 13:48:02,112 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/data/4d8d20846/8eb5dbe2ddd94d1f857bc6708cc20192/FLAGf8410c76e [2022-12-13 13:48:02,122 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/data/4d8d20846/8eb5dbe2ddd94d1f857bc6708cc20192 [2022-12-13 13:48:02,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:48:02,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:48:02,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:48:02,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:48:02,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:48:02,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6505ccbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02, skipping insertion in model container [2022-12-13 13:48:02,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:48:02,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:48:02,273 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_73d5b0a3-bab2-477f-99b7-dea0a330e53d/sv-benchmarks/c/array-crafted/zero_sum_const5.c[406,419] [2022-12-13 13:48:02,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:48:02,305 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:48:02,316 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_73d5b0a3-bab2-477f-99b7-dea0a330e53d/sv-benchmarks/c/array-crafted/zero_sum_const5.c[406,419] [2022-12-13 13:48:02,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:48:02,340 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:48:02,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02 WrapperNode [2022-12-13 13:48:02,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:48:02,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:48:02,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:48:02,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:48:02,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,376 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 148 [2022-12-13 13:48:02,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:48:02,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:48:02,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:48:02,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:48:02,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:48:02,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:48:02,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:48:02,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:48:02,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (1/1) ... [2022-12-13 13:48:02,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:48:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:02,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:48:02,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:48:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:48:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:48:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:48:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:48:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:48:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:48:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:48:02,528 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:48:02,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:48:02,701 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:48:02,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:48:02,705 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 13:48:02,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:02 BoogieIcfgContainer [2022-12-13 13:48:02,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:48:02,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:48:02,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:48:02,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:48:02,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:48:02" (1/3) ... [2022-12-13 13:48:02,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b57de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:48:02, skipping insertion in model container [2022-12-13 13:48:02,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:02" (2/3) ... [2022-12-13 13:48:02,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b57de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:48:02, skipping insertion in model container [2022-12-13 13:48:02,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:02" (3/3) ... [2022-12-13 13:48:02,714 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const5.c [2022-12-13 13:48:02,729 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:48:02,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:48:02,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:48:02,771 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;@3c05ef4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:48:02,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:48:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 13:48:02,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:02,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:02,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash 226651140, now seen corresponding path program 1 times [2022-12-13 13:48:02,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:02,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742954098] [2022-12-13 13:48:02,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:02,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:02,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742954098] [2022-12-13 13:48:02,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742954098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:48:02,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:48:02,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:48:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898165700] [2022-12-13 13:48:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:48:02,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:48:02,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:48:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:48:02,949 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:02,965 INFO L93 Difference]: Finished difference Result 83 states and 126 transitions. [2022-12-13 13:48:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:48:02,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 13:48:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:02,973 INFO L225 Difference]: With dead ends: 83 [2022-12-13 13:48:02,973 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 13:48:02,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:48:02,982 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:02,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:48:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 13:48:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-13 13:48:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-12-13 13:48:03,007 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 27 [2022-12-13 13:48:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:03,008 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-12-13 13:48:03,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,008 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-12-13 13:48:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 13:48:03,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:03,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:03,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:48:03,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash -833651044, now seen corresponding path program 1 times [2022-12-13 13:48:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:03,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181952613] [2022-12-13 13:48:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:03,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181952613] [2022-12-13 13:48:03,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181952613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:48:03,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:48:03,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:48:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159402446] [2022-12-13 13:48:03,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:48:03,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:48:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:48:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:48:03,126 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:03,204 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2022-12-13 13:48:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:48:03,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 13:48:03,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:03,205 INFO L225 Difference]: With dead ends: 75 [2022-12-13 13:48:03,205 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 13:48:03,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:48:03,208 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:03,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:48:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 13:48:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-12-13 13:48:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-12-13 13:48:03,216 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 27 [2022-12-13 13:48:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:03,216 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-12-13 13:48:03,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-12-13 13:48:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 13:48:03,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:03,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:48:03,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash 479992254, now seen corresponding path program 1 times [2022-12-13 13:48:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:03,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795845633] [2022-12-13 13:48:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:03,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:48:03,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:03,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795845633] [2022-12-13 13:48:03,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795845633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:48:03,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:48:03,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:48:03,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957963953] [2022-12-13 13:48:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:48:03,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:48:03,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:48:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:48:03,298 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:03,394 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2022-12-13 13:48:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:48:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 13:48:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:03,396 INFO L225 Difference]: With dead ends: 92 [2022-12-13 13:48:03,396 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 13:48:03,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:48:03,397 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 19 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:48:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 13:48:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2022-12-13 13:48:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2022-12-13 13:48:03,402 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 29 [2022-12-13 13:48:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:03,403 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2022-12-13 13:48:03,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-12-13 13:48:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 13:48:03,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:03,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:03,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:48:03,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash -509099182, now seen corresponding path program 1 times [2022-12-13 13:48:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:03,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077528965] [2022-12-13 13:48:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:03,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:48:03,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:03,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077528965] [2022-12-13 13:48:03,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077528965] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:48:03,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409912917] [2022-12-13 13:48:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:03,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:03,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:48:03,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:48:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:03,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:48:03,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:48:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:48:03,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:48:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:48:03,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409912917] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:48:03,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:48:03,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 13:48:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60373207] [2022-12-13 13:48:03,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:48:03,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:48:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:48:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:48:03,645 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:03,744 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2022-12-13 13:48:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:48:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-12-13 13:48:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:03,745 INFO L225 Difference]: With dead ends: 97 [2022-12-13 13:48:03,746 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 13:48:03,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:48:03,747 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:03,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:48:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 13:48:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-12-13 13:48:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-12-13 13:48:03,752 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 49 [2022-12-13 13:48:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:03,752 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-12-13 13:48:03,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-12-13 13:48:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 13:48:03,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:03,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:03,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:48:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:03,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 290748660, now seen corresponding path program 2 times [2022-12-13 13:48:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:03,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462174] [2022-12-13 13:48:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 13:48:04,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:04,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462174] [2022-12-13 13:48:04,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462174] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:48:04,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891044038] [2022-12-13 13:48:04,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:48:04,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:04,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:04,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:48:04,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:48:04,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:48:04,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:48:04,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:48:04,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:48:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 13:48:04,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:48:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 13:48:04,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891044038] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:48:04,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:48:04,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 13:48:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039455878] [2022-12-13 13:48:04,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:48:04,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:48:04,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:04,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:48:04,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:48:04,290 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:04,426 INFO L93 Difference]: Finished difference Result 123 states and 151 transitions. [2022-12-13 13:48:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:48:04,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-13 13:48:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:04,427 INFO L225 Difference]: With dead ends: 123 [2022-12-13 13:48:04,427 INFO L226 Difference]: Without dead ends: 83 [2022-12-13 13:48:04,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:48:04,429 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:04,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 22 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:48:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-13 13:48:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2022-12-13 13:48:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2022-12-13 13:48:04,437 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 51 [2022-12-13 13:48:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:04,437 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2022-12-13 13:48:04,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2022-12-13 13:48:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 13:48:04,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:04,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:04,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:48:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:04,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash -813057144, now seen corresponding path program 3 times [2022-12-13 13:48:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:04,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816624594] [2022-12-13 13:48:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:08,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:08,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816624594] [2022-12-13 13:48:08,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816624594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:48:08,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332748480] [2022-12-13 13:48:08,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:48:08,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:08,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:08,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:48:08,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:48:08,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 13:48:08,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:48:08,704 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-13 13:48:08,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:48:10,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:48:10,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2022-12-13 13:48:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:10,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:48:18,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:48:18,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 76 [2022-12-13 13:48:19,226 INFO L321 Elim1Store]: treesize reduction 58, result has 13.4 percent of original size [2022-12-13 13:48:19,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 17 [2022-12-13 13:48:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:22,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332748480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:48:22,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:48:22,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 29] total 62 [2022-12-13 13:48:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194164473] [2022-12-13 13:48:22,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:48:22,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-13 13:48:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-13 13:48:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=3405, Unknown=2, NotChecked=0, Total=3782 [2022-12-13 13:48:22,094 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 62 states, 62 states have (on average 3.306451612903226) internal successors, (205), 62 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:32,056 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2022-12-13 13:48:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 13:48:32,057 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.306451612903226) internal successors, (205), 62 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-13 13:48:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:32,059 INFO L225 Difference]: With dead ends: 207 [2022-12-13 13:48:32,059 INFO L226 Difference]: Without dead ends: 201 [2022-12-13 13:48:32,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 100 SyntacticMatches, 36 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3086 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=987, Invalid=8323, Unknown=2, NotChecked=0, Total=9312 [2022-12-13 13:48:32,064 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 73 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:32,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 138 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 13:48:32,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-13 13:48:32,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 125. [2022-12-13 13:48:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 124 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2022-12-13 13:48:32,079 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 71 [2022-12-13 13:48:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:32,080 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2022-12-13 13:48:32,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.306451612903226) internal successors, (205), 62 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2022-12-13 13:48:32,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 13:48:32,081 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:32,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:32,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:48:32,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:32,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:32,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1767165226, now seen corresponding path program 4 times [2022-12-13 13:48:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:32,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503754221] [2022-12-13 13:48:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 13:48:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:32,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503754221] [2022-12-13 13:48:32,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503754221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:48:32,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584939531] [2022-12-13 13:48:32,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:48:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:32,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:48:32,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:48:32,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:48:32,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:48:32,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:48:32,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:48:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 13:48:32,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:48:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 13:48:32,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584939531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:48:32,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:48:32,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-13 13:48:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681317976] [2022-12-13 13:48:32,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:48:32,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:48:32,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:48:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:48:32,576 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:32,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:32,846 INFO L93 Difference]: Finished difference Result 289 states and 334 transitions. [2022-12-13 13:48:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:48:32,847 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-13 13:48:32,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:32,848 INFO L225 Difference]: With dead ends: 289 [2022-12-13 13:48:32,848 INFO L226 Difference]: Without dead ends: 168 [2022-12-13 13:48:32,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:48:32,848 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 274 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:32,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 39 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:48:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-13 13:48:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 140. [2022-12-13 13:48:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1366906474820144) internal successors, (158), 139 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2022-12-13 13:48:32,864 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 73 [2022-12-13 13:48:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:32,865 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2022-12-13 13:48:32,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2022-12-13 13:48:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 13:48:32,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:32,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:32,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:48:33,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:33,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:33,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1072452492, now seen corresponding path program 5 times [2022-12-13 13:48:33,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:33,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020762610] [2022-12-13 13:48:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 13:48:33,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:33,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020762610] [2022-12-13 13:48:33,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020762610] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:48:33,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620026603] [2022-12-13 13:48:33,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:48:33,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:33,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:33,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:48:33,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:48:33,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 13:48:33,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:48:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:48:33,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:48:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 13:48:33,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:48:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 13:48:33,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620026603] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:48:33,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:48:33,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-13 13:48:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307592585] [2022-12-13 13:48:33,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:48:33,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:48:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:48:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:48:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:48:33,457 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:48:33,720 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2022-12-13 13:48:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:48:33,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-13 13:48:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:48:33,721 INFO L225 Difference]: With dead ends: 156 [2022-12-13 13:48:33,721 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 13:48:33,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:48:33,722 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 181 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:48:33,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 24 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:48:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 13:48:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2022-12-13 13:48:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2022-12-13 13:48:33,731 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 75 [2022-12-13 13:48:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:48:33,732 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2022-12-13 13:48:33,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:48:33,732 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2022-12-13 13:48:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 13:48:33,733 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:33,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:33,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 13:48:33,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:33,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:48:33,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1413596990, now seen corresponding path program 6 times [2022-12-13 13:48:33,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:33,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892056639] [2022-12-13 13:48:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:48:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:48:42,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892056639] [2022-12-13 13:48:42,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892056639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:48:42,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937501328] [2022-12-13 13:48:42,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:48:42,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:48:42,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:42,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:48:42,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:48:42,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 13:48:42,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:48:42,993 WARN L261 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 150 conjunts are in the unsatisfiable core [2022-12-13 13:48:42,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:48:43,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:48:43,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 13:48:52,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:48:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:48:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:48:52,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:48:52,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:48:52,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:48:52,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:48:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:48:52,054 INFO L321 Elim1Store]: treesize reduction 65, result has 43.0 percent of original size [2022-12-13 13:48:52,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 65 [2022-12-13 13:48:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:48:52,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:55:30,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 92 [2022-12-13 13:55:30,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:55:30,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 7969 treesize of output 6553 [2022-12-13 13:55:33,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 91 [2022-12-13 13:55:33,471 INFO L321 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2022-12-13 13:55:33,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6626 treesize of output 5162 [2022-12-13 13:56:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 1 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:30,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937501328] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:30,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:30,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 45, 60] total 157 [2022-12-13 13:56:30,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558001204] [2022-12-13 13:56:30,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:30,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2022-12-13 13:56:30,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2022-12-13 13:56:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1649, Invalid=22756, Unknown=87, NotChecked=0, Total=24492 [2022-12-13 13:56:30,247 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 157 states, 157 states have (on average 1.7006369426751593) internal successors, (267), 157 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:24,000 INFO L93 Difference]: Finished difference Result 496 states and 576 transitions. [2022-12-13 13:57:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-13 13:57:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 1.7006369426751593) internal successors, (267), 157 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-13 13:57:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:24,002 INFO L225 Difference]: With dead ends: 496 [2022-12-13 13:57:24,002 INFO L226 Difference]: Without dead ends: 414 [2022-12-13 13:57:24,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 75 SyntacticMatches, 35 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16651 ImplicationChecksByTransitivity, 436.6s TimeCoverageRelationStatistics Valid=4841, Invalid=36078, Unknown=87, NotChecked=0, Total=41006 [2022-12-13 13:57:24,006 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1932 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 11837 mSolverCounterSat, 4413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 16250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4413 IncrementalHoareTripleChecker+Valid, 11837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:24,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 381 Invalid, 16250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4413 Valid, 11837 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2022-12-13 13:57:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-13 13:57:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 265. [2022-12-13 13:57:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.125) internal successors, (297), 264 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 297 transitions. [2022-12-13 13:57:24,039 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 297 transitions. Word has length 93 [2022-12-13 13:57:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:24,039 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 297 transitions. [2022-12-13 13:57:24,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 1.7006369426751593) internal successors, (267), 157 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 297 transitions. [2022-12-13 13:57:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 13:57:24,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:24,040 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:24,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:57:24,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:24,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash 197094432, now seen corresponding path program 7 times [2022-12-13 13:57:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640308867] [2022-12-13 13:57:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 13:57:24,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:24,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640308867] [2022-12-13 13:57:24,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640308867] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:24,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656634142] [2022-12-13 13:57:24,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:57:24,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:24,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:24,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:24,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:57:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:24,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:57:24,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 13:57:24,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 13:57:24,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656634142] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:24,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:24,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-12-13 13:57:24,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101071810] [2022-12-13 13:57:24,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:24,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:57:24,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:24,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:57:24,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:57:24,638 INFO L87 Difference]: Start difference. First operand 265 states and 297 transitions. Second operand has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:25,065 INFO L93 Difference]: Finished difference Result 445 states and 498 transitions. [2022-12-13 13:57:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 13:57:25,065 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-13 13:57:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:25,066 INFO L225 Difference]: With dead ends: 445 [2022-12-13 13:57:25,066 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 13:57:25,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-12-13 13:57:25,067 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 201 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:25,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 48 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:57:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 13:57:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2022-12-13 13:57:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0956521739130434) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-12-13 13:57:25,086 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 95 [2022-12-13 13:57:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:25,086 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-12-13 13:57:25,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-12-13 13:57:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 13:57:25,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:25,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:25,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 13:57:25,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:57:25,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:25,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1433123212, now seen corresponding path program 8 times [2022-12-13 13:57:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:25,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917990415] [2022-12-13 13:57:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:25,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 8 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:37,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:37,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917990415] [2022-12-13 13:57:37,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917990415] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:37,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715570325] [2022-12-13 13:57:37,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:57:37,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:37,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:37,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:57:37,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:57:37,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:57:37,367 WARN L261 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 180 conjunts are in the unsatisfiable core [2022-12-13 13:57:37,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:37,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:57:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:39,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 13:57:41,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715570325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:41,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:41,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 23, 19] total 102 [2022-12-13 13:57:41,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128799908] [2022-12-13 13:57:41,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:41,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-12-13 13:57:41,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-12-13 13:57:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=9803, Unknown=0, NotChecked=0, Total=10302 [2022-12-13 13:57:41,948 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 102 states, 102 states have (on average 3.176470588235294) internal successors, (324), 102 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:01,457 INFO L93 Difference]: Finished difference Result 346 states and 384 transitions. [2022-12-13 13:58:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 13:58:01,457 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.176470588235294) internal successors, (324), 102 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 13:58:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:01,460 INFO L225 Difference]: With dead ends: 346 [2022-12-13 13:58:01,460 INFO L226 Difference]: Without dead ends: 340 [2022-12-13 13:58:01,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 188 SyntacticMatches, 43 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9326 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=2325, Invalid=22167, Unknown=0, NotChecked=0, Total=24492 [2022-12-13 13:58:01,462 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 842 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 11625 mSolverCounterSat, 1664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 13289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1664 IncrementalHoareTripleChecker+Valid, 11625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:01,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 332 Invalid, 13289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1664 Valid, 11625 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 13:58:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-12-13 13:58:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 121. [2022-12-13 13:58:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.1) internal successors, (132), 120 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2022-12-13 13:58:01,493 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 115 [2022-12-13 13:58:01,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:01,494 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2022-12-13 13:58:01,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.176470588235294) internal successors, (324), 102 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2022-12-13 13:58:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 13:58:01,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:01,494 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:01,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:58:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 13:58:01,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1506332182, now seen corresponding path program 9 times [2022-12-13 13:58:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:01,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695284400] [2022-12-13 13:58:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 13:58:01,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:01,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695284400] [2022-12-13 13:58:01,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695284400] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:01,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685483802] [2022-12-13 13:58:01,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:01,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:01,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:01,851 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:01,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:58:01,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 13:58:01,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:01,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 13:58:01,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 13:58:02,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 13:58:02,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685483802] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:02,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:02,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-12-13 13:58:02,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019393094] [2022-12-13 13:58:02,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:02,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 13:58:02,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:02,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 13:58:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:58:02,092 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:02,537 INFO L93 Difference]: Finished difference Result 363 states and 402 transitions. [2022-12-13 13:58:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:58:02,538 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-12-13 13:58:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:02,538 INFO L225 Difference]: With dead ends: 363 [2022-12-13 13:58:02,538 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 13:58:02,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 222 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:58:02,539 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 331 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:02,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 49 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:58:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 13:58:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 136. [2022-12-13 13:58:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0814814814814815) internal successors, (146), 135 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 146 transitions. [2022-12-13 13:58:02,574 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 146 transitions. Word has length 117 [2022-12-13 13:58:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:02,574 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 146 transitions. [2022-12-13 13:58:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 146 transitions. [2022-12-13 13:58:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 13:58:02,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:02,575 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:02,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:02,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:58:02,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:02,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:02,778 INFO L85 PathProgramCache]: Analyzing trace with hash 631817864, now seen corresponding path program 10 times [2022-12-13 13:58:02,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:02,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93483050] [2022-12-13 13:58:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-12-13 13:58:02,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93483050] [2022-12-13 13:58:02,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93483050] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951614079] [2022-12-13 13:58:02,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:02,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:02,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:02,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:02,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:58:03,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:03,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:03,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 13:58:03,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-12-13 13:58:03,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-12-13 13:58:03,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951614079] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:03,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:03,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-12-13 13:58:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606731138] [2022-12-13 13:58:03,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:03,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 13:58:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 13:58:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:58:03,362 INFO L87 Difference]: Start difference. First operand 136 states and 146 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:03,840 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2022-12-13 13:58:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:58:03,840 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-12-13 13:58:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:03,841 INFO L225 Difference]: With dead ends: 152 [2022-12-13 13:58:03,841 INFO L226 Difference]: Without dead ends: 148 [2022-12-13 13:58:03,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 255 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-12-13 13:58:03,841 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 292 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:03,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 29 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:58:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-13 13:58:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 138. [2022-12-13 13:58:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 137 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2022-12-13 13:58:03,877 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 135 [2022-12-13 13:58:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:03,877 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2022-12-13 13:58:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2022-12-13 13:58:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 13:58:03,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:03,879 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:03,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:04,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:58:04,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1639815466, now seen corresponding path program 11 times [2022-12-13 13:58:04,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:04,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302121005] [2022-12-13 13:58:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 10 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:28,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302121005] [2022-12-13 13:58:28,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302121005] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:28,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894568226] [2022-12-13 13:58:28,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:58:28,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:28,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:28,691 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:28,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:58:28,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 13:58:28,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:28,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 228 conjunts are in the unsatisfiable core [2022-12-13 13:58:28,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:28,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:58:29,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:58:29,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:58:29,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:58:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:33,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 13:58:37,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894568226] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:37,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:37,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 28, 23] total 128 [2022-12-13 13:58:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460559138] [2022-12-13 13:58:37,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:37,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-12-13 13:58:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:37,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-12-13 13:58:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=15648, Unknown=0, NotChecked=0, Total=16256 [2022-12-13 13:58:37,704 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 128 states, 128 states have (on average 3.03125) internal successors, (388), 128 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:08,401 INFO L93 Difference]: Finished difference Result 424 states and 471 transitions. [2022-12-13 13:59:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-13 13:59:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.03125) internal successors, (388), 128 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-12-13 13:59:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:08,403 INFO L225 Difference]: With dead ends: 424 [2022-12-13 13:59:08,403 INFO L226 Difference]: Without dead ends: 418 [2022-12-13 13:59:08,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 219 SyntacticMatches, 52 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13056 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=3093, Invalid=34737, Unknown=0, NotChecked=0, Total=37830 [2022-12-13 13:59:08,406 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2349 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 16410 mSolverCounterSat, 4215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 20625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4215 IncrementalHoareTripleChecker+Valid, 16410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:08,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 339 Invalid, 20625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4215 Valid, 16410 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-12-13 13:59:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-12-13 13:59:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 143. [2022-12-13 13:59:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0845070422535212) internal successors, (154), 142 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2022-12-13 13:59:08,468 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 137 [2022-12-13 13:59:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:08,468 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2022-12-13 13:59:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.03125) internal successors, (388), 128 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2022-12-13 13:59:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 13:59:08,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:08,469 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:08,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 13:59:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:08,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash -337097908, now seen corresponding path program 12 times [2022-12-13 13:59:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941169627] [2022-12-13 13:59:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:08,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-12-13 13:59:08,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:08,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941169627] [2022-12-13 13:59:08,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941169627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:08,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256532621] [2022-12-13 13:59:08,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:59:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:08,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:08,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:08,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:59:09,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 13:59:09,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:09,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 13:59:09,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-12-13 13:59:09,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:59:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-12-13 13:59:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256532621] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:59:09,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:59:09,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-12-13 13:59:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311499181] [2022-12-13 13:59:09,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:59:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 13:59:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 13:59:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-12-13 13:59:09,339 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:09,932 INFO L93 Difference]: Finished difference Result 423 states and 462 transitions. [2022-12-13 13:59:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 13:59:09,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-12-13 13:59:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:09,934 INFO L225 Difference]: With dead ends: 423 [2022-12-13 13:59:09,934 INFO L226 Difference]: Without dead ends: 175 [2022-12-13 13:59:09,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 264 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-12-13 13:59:09,935 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 359 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:09,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 50 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:59:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-13 13:59:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2022-12-13 13:59:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.070063694267516) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2022-12-13 13:59:09,988 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 139 [2022-12-13 13:59:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:09,988 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2022-12-13 13:59:09,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2022-12-13 13:59:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 13:59:09,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:09,989 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:09,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:59:10,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:10,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1612014142, now seen corresponding path program 13 times [2022-12-13 13:59:10,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:10,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711424309] [2022-12-13 13:59:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-12-13 13:59:10,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:10,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711424309] [2022-12-13 13:59:10,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711424309] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:10,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673208886] [2022-12-13 13:59:10,411 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:59:10,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:10,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:10,411 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:10,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:59:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:10,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 13:59:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-12-13 13:59:10,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:59:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-12-13 13:59:10,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673208886] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:59:10,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:59:10,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-12-13 13:59:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811806879] [2022-12-13 13:59:10,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:59:10,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 13:59:10,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 13:59:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-12-13 13:59:10,914 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:11,588 INFO L93 Difference]: Finished difference Result 174 states and 184 transitions. [2022-12-13 13:59:11,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 13:59:11,588 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-12-13 13:59:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:11,590 INFO L225 Difference]: With dead ends: 174 [2022-12-13 13:59:11,590 INFO L226 Difference]: Without dead ends: 170 [2022-12-13 13:59:11,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 294 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 13:59:11,591 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 300 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:11,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 32 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:59:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-12-13 13:59:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2022-12-13 13:59:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.069182389937107) internal successors, (170), 159 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2022-12-13 13:59:11,647 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 157 [2022-12-13 13:59:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:11,648 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2022-12-13 13:59:11,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2022-12-13 13:59:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 13:59:11,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:11,648 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:11,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 13:59:11,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:59:11,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1284366496, now seen corresponding path program 14 times [2022-12-13 13:59:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218105793] [2022-12-13 13:59:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 14 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:44,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:44,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218105793] [2022-12-13 13:59:44,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218105793] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:44,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845099181] [2022-12-13 13:59:44,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:59:44,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:44,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:44,753 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 13:59:44,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:59:44,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:44,849 WARN L261 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 264 conjunts are in the unsatisfiable core [2022-12-13 13:59:44,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:45,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:59:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:53,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 14:00:00,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845099181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:00,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:00:00,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 33, 27] total 169 [2022-12-13 14:00:00,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934850741] [2022-12-13 14:00:00,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2022-12-13 14:00:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2022-12-13 14:00:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=976, Invalid=27416, Unknown=0, NotChecked=0, Total=28392 [2022-12-13 14:00:00,337 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 169 states, 169 states have (on average 2.6745562130177514) internal successors, (452), 169 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:51,708 INFO L93 Difference]: Finished difference Result 530 states and 573 transitions. [2022-12-13 14:00:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-13 14:00:51,708 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 2.6745562130177514) internal successors, (452), 169 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-12-13 14:00:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:51,709 INFO L225 Difference]: With dead ends: 530 [2022-12-13 14:00:51,709 INFO L226 Difference]: Without dead ends: 256 [2022-12-13 14:00:51,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 244 SyntacticMatches, 52 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20732 ImplicationChecksByTransitivity, 66.7s TimeCoverageRelationStatistics Valid=3514, Invalid=53368, Unknown=0, NotChecked=0, Total=56882 [2022-12-13 14:00:51,711 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2341 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 17924 mSolverCounterSat, 4647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 22571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4647 IncrementalHoareTripleChecker+Valid, 17924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:51,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 370 Invalid, 22571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4647 Valid, 17924 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2022-12-13 14:00:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-12-13 14:00:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 184. [2022-12-13 14:00:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.0819672131147542) internal successors, (198), 183 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 198 transitions. [2022-12-13 14:00:51,784 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 198 transitions. Word has length 159 [2022-12-13 14:00:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:51,784 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 198 transitions. [2022-12-13 14:00:51,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 2.6745562130177514) internal successors, (452), 169 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 198 transitions. [2022-12-13 14:00:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 14:00:51,785 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:51,785 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:51,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 14:00:51,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 14:00:51,986 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:51,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1147931668, now seen corresponding path program 15 times [2022-12-13 14:00:51,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:51,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112036699] [2022-12-13 14:00:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-12-13 14:00:52,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:52,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112036699] [2022-12-13 14:00:52,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112036699] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:00:52,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477955080] [2022-12-13 14:00:52,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:00:52,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:52,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:52,253 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:52,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 14:00:52,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-13 14:00:52,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:00:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:00:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-12-13 14:00:52,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-12-13 14:00:53,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477955080] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:53,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:00:53,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-12-13 14:00:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047542287] [2022-12-13 14:00:53,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 14:00:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 14:00:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 14:00:53,025 INFO L87 Difference]: Start difference. First operand 184 states and 198 transitions. Second operand has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:54,397 INFO L93 Difference]: Finished difference Result 329 states and 359 transitions. [2022-12-13 14:00:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 14:00:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-12-13 14:00:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:54,398 INFO L225 Difference]: With dead ends: 329 [2022-12-13 14:00:54,398 INFO L226 Difference]: Without dead ends: 193 [2022-12-13 14:00:54,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 321 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=488, Invalid=2934, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 14:00:54,400 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 580 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:54,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 49 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 14:00:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-12-13 14:00:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2022-12-13 14:00:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.0607734806629834) internal successors, (192), 181 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2022-12-13 14:00:54,476 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 171 [2022-12-13 14:00:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:54,476 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions. [2022-12-13 14:00:54,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions. [2022-12-13 14:00:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-13 14:00:54,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:54,477 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:54,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 14:00:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 14:00:54,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1507735830, now seen corresponding path program 16 times [2022-12-13 14:00:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:54,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332107838] [2022-12-13 14:00:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:54,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 36 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:01:42,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:42,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332107838] [2022-12-13 14:01:42,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332107838] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:01:42,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063193158] [2022-12-13 14:01:42,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:01:42,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:42,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:01:42,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:01:42,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d5b0a3-bab2-477f-99b7-dea0a330e53d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 14:01:42,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:01:42,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:01:42,456 WARN L261 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 290 conjunts are in the unsatisfiable core [2022-12-13 14:01:42,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:01:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 14:01:53,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:03,595 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:02:03,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 121 treesize of output 552 [2022-12-13 14:02:11,067 INFO L321 Elim1Store]: treesize reduction 504, result has 5.4 percent of original size [2022-12-13 14:02:11,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 120 treesize of output 47 [2022-12-13 14:02:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 14:02:11,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063193158] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:11,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:02:11,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 32, 32] total 189 [2022-12-13 14:02:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941478999] [2022-12-13 14:02:11,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2022-12-13 14:02:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2022-12-13 14:02:11,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=34342, Unknown=0, NotChecked=0, Total=35532 [2022-12-13 14:02:11,279 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand has 189 states, 189 states have (on average 2.6825396825396823) internal successors, (507), 189 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)