./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array20_pattern.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_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/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_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/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_409435ac-fb47-4e2e-8cd6-afba7a01e181/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 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- 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 16:28:11,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:28:11,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:28:11,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:28:11,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:28:11,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:28:11,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:28:11,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:28:11,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:28:11,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:28:11,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:28:11,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:28:11,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:28:11,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:28:11,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:28:11,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:28:11,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:28:11,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:28:11,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:28:11,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:28:11,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:28:11,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:28:11,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:28:11,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:28:11,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:28:11,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:28:11,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:28:11,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:28:11,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:28:11,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:28:11,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:28:11,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:28:11,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:28:11,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:28:11,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:28:11,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:28:11,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:28:11,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:28:11,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:28:11,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:28:11,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:28:11,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:28:11,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:28:11,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:28:11,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:28:11,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:28:11,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:28:11,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:28:11,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:28:11,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:28:11,157 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:28:11,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:28:11,158 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:28:11,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:28:11,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:28:11,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:28:11,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:28:11,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:28:11,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:28:11,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:28:11,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:28:11,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:28:11,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:28:11,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:28:11,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:28:11,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:28:11,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:28:11,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:28:11,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:28:11,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:28:11,162 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:28:11,162 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2022-12-13 16:28:11,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:28:11,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:28:11,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:28:11,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:28:11,365 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:28:11,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2022-12-13 16:28:13,938 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:28:14,080 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:28:14,080 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/sv-benchmarks/c/array-patterns/array20_pattern.c [2022-12-13 16:28:14,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data/acfe1fcf6/6ce3ddaef7934ec5a447c04913e54c24/FLAG447d610ee [2022-12-13 16:28:14,097 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data/acfe1fcf6/6ce3ddaef7934ec5a447c04913e54c24 [2022-12-13 16:28:14,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:28:14,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:28:14,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:28:14,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:28:14,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:28:14,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7957e92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14, skipping insertion in model container [2022-12-13 16:28:14,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:28:14,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:28:14,222 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-12-13 16:28:14,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:28:14,244 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:28:14,255 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-12-13 16:28:14,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:28:14,272 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:28:14,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14 WrapperNode [2022-12-13 16:28:14,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:28:14,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:28:14,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:28:14,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:28:14,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,297 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-12-13 16:28:14,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:28:14,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:28:14,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:28:14,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:28:14,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:28:14,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:28:14,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:28:14,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:28:14,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (1/1) ... [2022-12-13 16:28:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:28:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:14,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:14,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:28:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:28:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:28:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:28:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:28:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:28:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:28:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:28:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:28:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:28:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:28:14,431 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:28:14,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:28:14,577 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:28:14,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:28:14,582 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 16:28:14,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:28:14 BoogieIcfgContainer [2022-12-13 16:28:14,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:28:14,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:28:14,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:28:14,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:28:14,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:28:14" (1/3) ... [2022-12-13 16:28:14,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bedba24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:28:14, skipping insertion in model container [2022-12-13 16:28:14,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:14" (2/3) ... [2022-12-13 16:28:14,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bedba24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:28:14, skipping insertion in model container [2022-12-13 16:28:14,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:28:14" (3/3) ... [2022-12-13 16:28:14,589 INFO L112 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2022-12-13 16:28:14,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:28:14,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:28:14,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:28:14,643 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;@35172a1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:28:14,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:28:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:28:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 16:28:14,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:28:14,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:14,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:28:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-12-13 16:28:14,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:14,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724664164] [2022-12-13 16:28:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:14,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:14,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724664164] [2022-12-13 16:28:14,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 16:28:14,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183072077] [2022-12-13 16:28:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:14,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:14,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:14,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:14,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:28:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:14,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 16:28:14,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:14,835 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 16:28:14,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:28:14,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183072077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:28:14,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:28:14,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:28:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412418822] [2022-12-13 16:28:14,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:28:14,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:28:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:28:14,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:28:14,866 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:28:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:14,881 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-12-13 16:28:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:28:14,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 16:28:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:28:14,888 INFO L225 Difference]: With dead ends: 63 [2022-12-13 16:28:14,888 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 16:28:14,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 16:28:14,892 INFO L413 NwaCegarLoop]: 41 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, 41 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 16:28:14,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:28:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 16:28:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 16:28:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:28:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-12-13 16:28:14,917 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-12-13 16:28:14,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:28:14,918 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-12-13 16:28:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:28:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-12-13 16:28:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 16:28:14,919 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:28:14,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:14,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:15,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 16:28:15,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:28:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:15,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-12-13 16:28:15,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:15,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320056416] [2022-12-13 16:28:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:15,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:28:15,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547587107] [2022-12-13 16:28:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:15,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:15,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:28:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:15,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:28:15,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:28:15,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:28:15,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320056416] [2022-12-13 16:28:15,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:28:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547587107] [2022-12-13 16:28:15,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547587107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:28:15,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:28:15,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:28:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665687214] [2022-12-13 16:28:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:28:15,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:28:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:28:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:28:15,312 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:28:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:15,331 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-12-13 16:28:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:28:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 16:28:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:28:15,332 INFO L225 Difference]: With dead ends: 36 [2022-12-13 16:28:15,332 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 16:28:15,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:28:15,334 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:28:15,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:28:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 16:28:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 16:28:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:28:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-12-13 16:28:15,339 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-12-13 16:28:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:28:15,340 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-12-13 16:28:15,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:28:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-12-13 16:28:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 16:28:15,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:28:15,341 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:28:15,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:15,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:28:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-12-13 16:28:15,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:15,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881341141] [2022-12-13 16:28:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:15,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:28:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849098679] [2022-12-13 16:28:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:15,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:15,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:15,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:15,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:28:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:15,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:28:15,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:28:15,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:28:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881341141] [2022-12-13 16:28:15,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:28:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849098679] [2022-12-13 16:28:15,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849098679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:28:15,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:28:15,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:28:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889244915] [2022-12-13 16:28:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:28:15,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:28:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:28:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:28:15,762 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:28:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:15,849 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-12-13 16:28:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:28:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-12-13 16:28:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:28:15,850 INFO L225 Difference]: With dead ends: 67 [2022-12-13 16:28:15,850 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 16:28:15,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:28:15,852 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:28:15,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 92 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:28:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 16:28:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-12-13 16:28:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:28:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-12-13 16:28:15,858 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2022-12-13 16:28:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:28:15,858 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-12-13 16:28:15,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:28:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-12-13 16:28:15,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 16:28:15,859 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:28:15,859 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-12-13 16:28:15,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:16,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 16:28:16,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:28:16,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-12-13 16:28:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:16,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477989171] [2022-12-13 16:28:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:16,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:28:16,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503860920] [2022-12-13 16:28:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:16,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:16,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:16,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:28:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:16,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:28:16,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:28:16,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:28:16,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:16,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477989171] [2022-12-13 16:28:16,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:28:16,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503860920] [2022-12-13 16:28:16,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503860920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:28:16,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:28:16,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:28:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456487267] [2022-12-13 16:28:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:28:16,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:28:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:28:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:28:16,389 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:28:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:16,436 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-12-13 16:28:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:28:16,437 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-12-13 16:28:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:28:16,438 INFO L225 Difference]: With dead ends: 64 [2022-12-13 16:28:16,438 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 16:28:16,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:28:16,439 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:28:16,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 51 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:28:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 16:28:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-12-13 16:28:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:28:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-12-13 16:28:16,447 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2022-12-13 16:28:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:28:16,447 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-12-13 16:28:16,447 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:28:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-12-13 16:28:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 16:28:16,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:28:16,449 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-12-13 16:28:16,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:28:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:16,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:28:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-12-13 16:28:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:16,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315762893] [2022-12-13 16:28:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:16,690 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:28:16,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100008159] [2022-12-13 16:28:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:16,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:16,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:16,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:16,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:28:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:16,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 16:28:16,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:17,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 66 treesize of output 61 [2022-12-13 16:28:17,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 135 [2022-12-13 16:28:17,501 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-13 16:28:17,501 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 28 treesize of output 10 [2022-12-13 16:28:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:28:17,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:28:17,705 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 176 treesize of output 168 [2022-12-13 16:28:17,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:28:17,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 733 [2022-12-13 16:28:18,420 INFO L321 Elim1Store]: treesize reduction 354, result has 27.8 percent of original size [2022-12-13 16:28:18,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 963 treesize of output 1067 [2022-12-13 16:28:28,124 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 313 DAG size of output: 142 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 16:28:28,125 INFO L321 Elim1Store]: treesize reduction 3116, result has 25.7 percent of original size [2022-12-13 16:28:28,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 3304 treesize of output 12430 [2022-12-13 16:29:16,243 INFO L217 Elim1Store]: Index analysis took 1875 ms [2022-12-13 16:29:16,492 INFO L321 Elim1Store]: treesize reduction 856, result has 0.1 percent of original size [2022-12-13 16:29:16,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 24 case distinctions, treesize of input 2146 treesize of output 14297 [2022-12-13 16:29:17,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:17,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:17,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:18,144 INFO L217 Elim1Store]: Index analysis took 205 ms [2022-12-13 16:29:18,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2146 treesize of output 14297 [2022-12-13 16:29:20,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:20,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:21,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:21,520 INFO L217 Elim1Store]: Index analysis took 1137 ms [2022-12-13 16:29:21,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2146 treesize of output 14297 [2022-12-13 16:29:26,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:27,526 INFO L217 Elim1Store]: Index analysis took 835 ms [2022-12-13 16:29:27,646 INFO L321 Elim1Store]: treesize reduction 434, result has 0.2 percent of original size [2022-12-13 16:29:27,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 17 case distinctions, treesize of input 2146 treesize of output 14297 [2022-12-13 16:29:53,924 INFO L217 Elim1Store]: Index analysis took 215 ms [2022-12-13 16:29:53,967 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-12-13 16:29:53,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1000 treesize of output 953 [2022-12-13 16:29:55,080 INFO L217 Elim1Store]: Index analysis took 194 ms [2022-12-13 16:29:55,105 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-12-13 16:29:55,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1000 treesize of output 953 [2022-12-13 16:29:55,740 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-12-13 16:29:55,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1180 treesize of output 1133 [2022-12-13 16:29:56,943 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-12-13 16:29:56,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 2500 treesize of output 2453 [2022-12-13 16:29:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:57,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 694 treesize of output 647 [2022-12-13 16:29:57,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:57,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:57,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:57,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:29:57,690 INFO L321 Elim1Store]: treesize reduction 101, result has 5.6 percent of original size [2022-12-13 16:29:57,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 391 treesize of output 135 [2022-12-13 16:29:58,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:59,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:29:59,837 INFO L321 Elim1Store]: treesize reduction 372, result has 6.3 percent of original size [2022-12-13 16:29:59,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 486 treesize of output 249 [2022-12-13 16:30:00,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:00,780 INFO L321 Elim1Store]: treesize reduction 369, result has 7.1 percent of original size [2022-12-13 16:30:00,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 361 treesize of output 127 [2022-12-13 16:30:02,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:30:02,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1817 treesize of output 1012 [2022-12-13 16:30:13,733 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 55 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:30:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:30:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:30:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315762893] [2022-12-13 16:30:19,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:30:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100008159] [2022-12-13 16:30:19,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100008159] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:30:19,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:30:19,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 37 [2022-12-13 16:30:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241109302] [2022-12-13 16:30:19,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:30:19,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 16:30:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:30:19,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 16:30:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 16:30:19,849 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:30:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:30:29,644 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2022-12-13 16:30:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 16:30:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-12-13 16:30:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:30:29,645 INFO L225 Difference]: With dead ends: 105 [2022-12-13 16:30:29,645 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 16:30:29,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=720, Invalid=3570, Unknown=0, NotChecked=0, Total=4290 [2022-12-13 16:30:29,647 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 169 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:30:29,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 262 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 16:30:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 16:30:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2022-12-13 16:30:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:30:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-12-13 16:30:29,656 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 40 [2022-12-13 16:30:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:30:29,656 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-12-13 16:30:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:30:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-12-13 16:30:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:30:29,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:30:29,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:30:29,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:30:29,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:29,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:30:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:30:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-12-13 16:30:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:30:29,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027635612] [2022-12-13 16:30:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:30:29,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:30:29,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:30:29,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298725194] [2022-12-13 16:30:29,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:30:29,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:29,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:30:29,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:30:29,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:30:29,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:30:29,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:30:29,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:30:29,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:30:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:30:29,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:30:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:30:30,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:30:30,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027635612] [2022-12-13 16:30:30,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:30:30,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298725194] [2022-12-13 16:30:30,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298725194] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:30:30,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:30:30,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 16:30:30,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83320059] [2022-12-13 16:30:30,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:30:30,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:30:30,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:30:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:30:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:30:30,047 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:30:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:30:30,203 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2022-12-13 16:30:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:30:30,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-12-13 16:30:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:30:30,204 INFO L225 Difference]: With dead ends: 127 [2022-12-13 16:30:30,204 INFO L226 Difference]: Without dead ends: 94 [2022-12-13 16:30:30,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:30:30,205 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 134 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:30:30,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 107 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:30:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-13 16:30:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2022-12-13 16:30:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:30:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2022-12-13 16:30:30,214 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 42 [2022-12-13 16:30:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:30:30,214 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2022-12-13 16:30:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:30:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2022-12-13 16:30:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:30:30,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:30:30,215 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:30:30,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:30:30,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 16:30:30,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:30:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:30:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2022-12-13 16:30:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:30:30,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51286455] [2022-12-13 16:30:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:30:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:30:30,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:30:30,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571050642] [2022-12-13 16:30:30,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:30:30,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:30,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:30:30,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:30:30,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:30:30,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:30:30,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:30:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 16:30:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:30:30,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 66 treesize of output 61 [2022-12-13 16:30:30,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 135 [2022-12-13 16:30:30,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:30:30,974 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 34 treesize of output 31 [2022-12-13 16:30:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 16:30:31,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:30:31,481 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 176 treesize of output 168 [2022-12-13 16:30:31,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:30:31,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 733 [2022-12-13 16:30:31,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:31,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:31,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:31,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:31,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:31,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:32,179 INFO L321 Elim1Store]: treesize reduction 390, result has 12.2 percent of original size [2022-12-13 16:30:32,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 413 treesize of output 700 [2022-12-13 16:30:33,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:33,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:33,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:33,805 INFO L321 Elim1Store]: treesize reduction 338, result has 24.7 percent of original size [2022-12-13 16:30:33,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 1008 treesize of output 2360 [2022-12-13 16:30:37,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:37,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:37,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:37,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:37,599 INFO L321 Elim1Store]: treesize reduction 279, result has 23.4 percent of original size [2022-12-13 16:30:37,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 1837 treesize of output 3001 [2022-12-13 16:30:38,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:38,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:38,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:38,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:38,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 1099 treesize of output 2137 [2022-12-13 16:30:39,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:39,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 1099 treesize of output 2137 [2022-12-13 16:30:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:39,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,758 INFO L217 Elim1Store]: Index analysis took 181 ms [2022-12-13 16:30:39,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 743 treesize of output 717 [2022-12-13 16:30:39,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:39,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:30:39,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:39,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:30:40,156 INFO L321 Elim1Store]: treesize reduction 131, result has 30.7 percent of original size [2022-12-13 16:30:40,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 757 treesize of output 784 [2022-12-13 16:30:41,134 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-12-13 16:30:41,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1665726 treesize of output 1664665 [2022-12-13 16:31:07,837 WARN L233 SmtUtils]: Spent 26.70s on a formula simplification. DAG size of input: 1403 DAG size of output: 1391 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 16:31:49,290 WARN L233 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 903 DAG size of output: 902 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 16:32:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 16:32:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:32:28,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51286455] [2022-12-13 16:32:28,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:32:28,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571050642] [2022-12-13 16:32:28,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571050642] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:32:28,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:32:28,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2022-12-13 16:32:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159158650] [2022-12-13 16:32:28,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:32:28,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 16:32:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:32:28,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 16:32:28,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-12-13 16:32:28,121 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:32:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:32:33,600 INFO L93 Difference]: Finished difference Result 144 states and 177 transitions. [2022-12-13 16:32:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 16:32:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2022-12-13 16:32:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:32:33,602 INFO L225 Difference]: With dead ends: 144 [2022-12-13 16:32:33,602 INFO L226 Difference]: Without dead ends: 112 [2022-12-13 16:32:33,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=392, Invalid=2058, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 16:32:33,603 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 159 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:32:33,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 176 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 16:32:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-13 16:32:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 79. [2022-12-13 16:32:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:32:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2022-12-13 16:32:33,615 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 42 [2022-12-13 16:32:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:32:33,616 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2022-12-13 16:32:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:32:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2022-12-13 16:32:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:32:33,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:32:33,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:32:33,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 16:32:33,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 16:32:33,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:32:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:32:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 1 times [2022-12-13 16:32:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:32:33,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468961123] [2022-12-13 16:32:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:32:33,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:32:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041770384] [2022-12-13 16:32:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:33,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:33,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:32:33,833 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:32:33,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:32:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:32:33,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:32:33,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:32:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:32:33,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:32:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:32:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:32:33,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468961123] [2022-12-13 16:32:33,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:32:33,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041770384] [2022-12-13 16:32:33,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041770384] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:32:33,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:32:33,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 16:32:33,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262293661] [2022-12-13 16:32:33,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:32:33,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 16:32:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:32:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 16:32:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:32:33,968 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:32:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:32:34,144 INFO L93 Difference]: Finished difference Result 150 states and 184 transitions. [2022-12-13 16:32:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:32:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-12-13 16:32:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:32:34,145 INFO L225 Difference]: With dead ends: 150 [2022-12-13 16:32:34,145 INFO L226 Difference]: Without dead ends: 109 [2022-12-13 16:32:34,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:32:34,146 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:32:34,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 105 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:32:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-13 16:32:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2022-12-13 16:32:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 84 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:32:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2022-12-13 16:32:34,160 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 42 [2022-12-13 16:32:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:32:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2022-12-13 16:32:34,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:32:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2022-12-13 16:32:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 16:32:34,161 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:32:34,162 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-13 16:32:34,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:32:34,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:34,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:32:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:32:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2022-12-13 16:32:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:32:34,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198675883] [2022-12-13 16:32:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:32:34,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:32:34,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142717720] [2022-12-13 16:32:34,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:32:34,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:32:34,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:32:34,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:32:34,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:32:34,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:32:34,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:32:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:32:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:32:34,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:32:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:32:34,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:32:34,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198675883] [2022-12-13 16:32:34,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:32:34,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142717720] [2022-12-13 16:32:34,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142717720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:32:34,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:32:34,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 16:32:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157109706] [2022-12-13 16:32:34,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:32:34,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:32:34,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:32:34,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:32:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:32:34,548 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:32:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:32:34,734 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-12-13 16:32:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:32:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-12-13 16:32:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:32:34,735 INFO L225 Difference]: With dead ends: 112 [2022-12-13 16:32:34,735 INFO L226 Difference]: Without dead ends: 79 [2022-12-13 16:32:34,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:32:34,736 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:32:34,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 122 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:32:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-13 16:32:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-12-13 16:32:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:32:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-12-13 16:32:34,747 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 45 [2022-12-13 16:32:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:32:34,747 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-12-13 16:32:34,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:32:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-12-13 16:32:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 16:32:34,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:32:34,748 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:32:34,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:32:34,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:34,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:32:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:32:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 2 times [2022-12-13 16:32:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:32:34,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615635973] [2022-12-13 16:32:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:34,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:32:34,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:32:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160895415] [2022-12-13 16:32:34,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:32:34,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:34,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:32:34,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:32:34,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:32:35,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:32:35,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:32:35,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:32:35,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:32:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:32:35,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:32:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 16:32:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:32:35,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615635973] [2022-12-13 16:32:35,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:32:35,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160895415] [2022-12-13 16:32:35,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160895415] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:32:35,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:32:35,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 16:32:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451037160] [2022-12-13 16:32:35,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:32:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:32:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:32:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:32:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:32:35,126 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:32:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:32:35,242 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-12-13 16:32:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:32:35,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-12-13 16:32:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:32:35,242 INFO L225 Difference]: With dead ends: 78 [2022-12-13 16:32:35,242 INFO L226 Difference]: Without dead ends: 67 [2022-12-13 16:32:35,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:32:35,243 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:32:35,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 85 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:32:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-13 16:32:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-12-13 16:32:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:32:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-12-13 16:32:35,250 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 49 [2022-12-13 16:32:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:32:35,250 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-12-13 16:32:35,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:32:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-12-13 16:32:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:32:35,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:32:35,251 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 16:32:35,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:32:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 16:32:35,453 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:32:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:32:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 5 times [2022-12-13 16:32:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:32:35,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128006462] [2022-12-13 16:32:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:32:35,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:32:35,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950702977] [2022-12-13 16:32:35,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:32:35,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:32:35,487 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:32:35,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:32:35,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-12-13 16:32:35,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:32:35,990 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-13 16:32:35,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:32:36,050 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 20 treesize of output 16 [2022-12-13 16:32:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,102 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 34 treesize of output 33 [2022-12-13 16:32:36,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:32:36,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2022-12-13 16:32:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:32:36,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2022-12-13 16:32:36,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 178 treesize of output 161 [2022-12-13 16:32:36,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,062 INFO L321 Elim1Store]: treesize reduction 102, result has 1.0 percent of original size [2022-12-13 16:32:37,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 26 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 687 [2022-12-13 16:32:37,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:32:37,507 INFO L217 Elim1Store]: Index analysis took 101 ms [2022-12-13 16:32:37,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:37,638 INFO L321 Elim1Store]: treesize reduction 186, result has 0.5 percent of original size [2022-12-13 16:32:37,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 6 select indices, 6 select index equivalence classes, 29 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 290 treesize of output 639 [2022-12-13 16:32:42,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 1067 treesize of output 1036 [2022-12-13 16:32:42,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:32:42,409 INFO L217 Elim1Store]: Index analysis took 109 ms [2022-12-13 16:32:46,899 INFO L321 Elim1Store]: treesize reduction 1220, result has 4.2 percent of original size [2022-12-13 16:32:46,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 6 select indices, 6 select index equivalence classes, 37 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 867 treesize of output 5045 [2022-12-13 16:33:00,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:33:00,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 1482 treesize of output 3585 [2022-12-13 16:33:00,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:00,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:33:01,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:01,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 1500 treesize of output 3634 [2022-12-13 16:33:47,938 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 1047 treesize of output 1011 [2022-12-13 16:33:47,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:33:47,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:34:05,996 WARN L233 SmtUtils]: Spent 18.03s on a formula simplification. DAG size of input: 264 DAG size of output: 84 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 16:34:05,998 INFO L321 Elim1Store]: treesize reduction 1063, result has 20.8 percent of original size [2022-12-13 16:34:05,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 4 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 91246 treesize of output 91331 [2022-12-13 16:34:08,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:34:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128006462] [2022-12-13 16:34:08,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:34:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950702977] [2022-12-13 16:34:08,995 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 16:34:09,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:34:09,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:34:09,196 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected |aux_mod_ULTIMATE.start_main_~index2~0#1_50| already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:202) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:594) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:582) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:509) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:423) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:312) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:235) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:202) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:186) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:131) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-13 16:34:09,200 INFO L158 Benchmark]: Toolchain (without parser) took 355100.44ms. Allocated memory was 127.9MB in the beginning and 570.4MB in the end (delta: 442.5MB). Free memory was 93.6MB in the beginning and 447.8MB in the end (delta: -354.3MB). Peak memory consumption was 346.3MB. Max. memory is 16.1GB. [2022-12-13 16:34:09,201 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 69.9MB in the beginning and 69.8MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:34:09,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.08ms. Allocated memory is still 127.9MB. Free memory was 93.6MB in the beginning and 82.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 16:34:09,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.53ms. Allocated memory is still 127.9MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:34:09,201 INFO L158 Benchmark]: Boogie Preprocessor took 18.74ms. Allocated memory is still 127.9MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:34:09,202 INFO L158 Benchmark]: RCFGBuilder took 265.55ms. Allocated memory is still 127.9MB. Free memory was 79.3MB in the beginning and 66.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 16:34:09,202 INFO L158 Benchmark]: TraceAbstraction took 354615.19ms. Allocated memory was 127.9MB in the beginning and 570.4MB in the end (delta: 442.5MB). Free memory was 65.4MB in the beginning and 447.8MB in the end (delta: -382.4MB). Peak memory consumption was 319.0MB. Max. memory is 16.1GB. [2022-12-13 16:34:09,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 69.9MB in the beginning and 69.8MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.08ms. Allocated memory is still 127.9MB. Free memory was 93.6MB in the beginning and 82.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.53ms. Allocated memory is still 127.9MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.74ms. Allocated memory is still 127.9MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.55ms. Allocated memory is still 127.9MB. Free memory was 79.3MB in the beginning and 66.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 354615.19ms. Allocated memory was 127.9MB in the beginning and 570.4MB in the end (delta: 442.5MB). Free memory was 65.4MB in the beginning and 447.8MB in the end (delta: -382.4MB). Peak memory consumption was 319.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected |aux_mod_ULTIMATE.start_main_~index2~0#1_50| already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected |aux_mod_ULTIMATE.start_main_~index2~0#1_50| already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:202) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-13 16:34:09,413 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-13 16:34:09,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/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_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/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 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- 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 16:34:10,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:34:10,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:34:10,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:34:10,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:34:10,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:34:10,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:34:10,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:34:10,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:34:10,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:34:10,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:34:10,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:34:10,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:34:10,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:34:10,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:34:10,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:34:10,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:34:10,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:34:10,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:34:10,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:34:10,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:34:10,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:34:10,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:34:10,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:34:10,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:34:10,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:34:10,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:34:10,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:34:10,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:34:10,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:34:10,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:34:10,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:34:10,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:34:10,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:34:10,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:34:10,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:34:10,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:34:10,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:34:10,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:34:10,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:34:10,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:34:10,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 16:34:10,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:34:10,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:34:10,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:34:10,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:34:10,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:34:10,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:34:10,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:34:10,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:34:10,813 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:34:10,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:34:10,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:34:10,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:34:10,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:34:10,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:34:10,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:34:10,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:34:10,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:34:10,815 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 16:34:10,815 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 16:34:10,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:34:10,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:34:10,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:34:10,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:34:10,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:34:10,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:34:10,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:34:10,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:34:10,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:34:10,817 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:34:10,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:34:10,818 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 16:34:10,818 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:34:10,818 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2022-12-13 16:34:11,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:34:11,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:34:11,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:34:11,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:34:11,040 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:34:11,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2022-12-13 16:34:13,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:34:13,845 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:34:13,846 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/sv-benchmarks/c/array-patterns/array20_pattern.c [2022-12-13 16:34:13,853 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data/323de7c37/6bb5bd738e7045f5943e367185f76432/FLAG4f3fdd8ae [2022-12-13 16:34:13,867 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/data/323de7c37/6bb5bd738e7045f5943e367185f76432 [2022-12-13 16:34:13,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:34:13,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:34:13,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:34:13,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:34:13,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:34:13,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:34:13" (1/1) ... [2022-12-13 16:34:13,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716aeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:13, skipping insertion in model container [2022-12-13 16:34:13,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:34:13" (1/1) ... [2022-12-13 16:34:13,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:34:13,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:34:14,043 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-12-13 16:34:14,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:34:14,075 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:34:14,087 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_409435ac-fb47-4e2e-8cd6-afba7a01e181/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-12-13 16:34:14,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:34:14,112 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:34:14,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14 WrapperNode [2022-12-13 16:34:14,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:34:14,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:34:14,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:34:14,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:34:14,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,149 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-12-13 16:34:14,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:34:14,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:34:14,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:34:14,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:34:14,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:34:14,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:34:14,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:34:14,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:34:14,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (1/1) ... [2022-12-13 16:34:14,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:34:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:34:14,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:34:14,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:34:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:34:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 16:34:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:34:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:34:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:34:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 16:34:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:34:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:34:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:34:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 16:34:14,317 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:34:14,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:34:14,673 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:34:14,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:34:14,677 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 16:34:14,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:34:14 BoogieIcfgContainer [2022-12-13 16:34:14,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:34:14,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:34:14,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:34:14,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:34:14,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:34:13" (1/3) ... [2022-12-13 16:34:14,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204e4d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:34:14, skipping insertion in model container [2022-12-13 16:34:14,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:34:14" (2/3) ... [2022-12-13 16:34:14,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204e4d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:34:14, skipping insertion in model container [2022-12-13 16:34:14,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:34:14" (3/3) ... [2022-12-13 16:34:14,684 INFO L112 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2022-12-13 16:34:14,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:34:14,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:34:14,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:34:14,733 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;@2e3f4d45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:34:14,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:34:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:34:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 16:34:14,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:14,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:34:14,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-12-13 16:34:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:34:14,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773186237] [2022-12-13 16:34:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:14,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:14,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:34:14,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:34:14,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 16:34:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:14,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 16:34:14,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:14,845 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 16:34:14,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:34:14,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:34:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773186237] [2022-12-13 16:34:14,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773186237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:34:14,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:34:14,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:34:14,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95661129] [2022-12-13 16:34:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:34:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:34:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:34:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:34:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:34:14,873 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:34:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:14,888 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-12-13 16:34:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:34:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 16:34:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:14,894 INFO L225 Difference]: With dead ends: 63 [2022-12-13 16:34:14,894 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 16:34:14,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 16:34:14,898 INFO L413 NwaCegarLoop]: 41 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, 41 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 16:34:14,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:34:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 16:34:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 16:34:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:34:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-12-13 16:34:14,926 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-12-13 16:34:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:34:14,926 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-12-13 16:34:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 16:34:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-12-13 16:34:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 16:34:14,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:14,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:34:14,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:34:15,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:15,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-12-13 16:34:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:34:15,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32551179] [2022-12-13 16:34:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:15,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:15,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:34:15,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:34:15,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 16:34:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:15,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:34:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:34:15,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:34:15,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:34:15,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32551179] [2022-12-13 16:34:15,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32551179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:34:15,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:34:15,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:34:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797938235] [2022-12-13 16:34:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:34:15,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:34:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:34:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:34:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:34:15,409 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:34:15,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:15,461 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-12-13 16:34:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:34:15,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 16:34:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:15,463 INFO L225 Difference]: With dead ends: 36 [2022-12-13 16:34:15,463 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 16:34:15,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:34:15,464 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:34:15,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:34:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 16:34:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 16:34:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:34:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-12-13 16:34:15,469 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-12-13 16:34:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:34:15,470 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-12-13 16:34:15,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:34:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-12-13 16:34:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 16:34:15,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:15,471 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:34:15,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 16:34:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:15,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-12-13 16:34:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:34:15,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981675643] [2022-12-13 16:34:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:15,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:34:15,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:34:15,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 16:34:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:15,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:34:15,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:34:15,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:34:15,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:34:15,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981675643] [2022-12-13 16:34:15,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981675643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:34:15,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:34:15,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:34:15,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845426619] [2022-12-13 16:34:15,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:34:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:34:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:34:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:34:15,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:34:15,967 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:34:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:16,522 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2022-12-13 16:34:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:34:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-12-13 16:34:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:16,523 INFO L225 Difference]: With dead ends: 70 [2022-12-13 16:34:16,524 INFO L226 Difference]: Without dead ends: 46 [2022-12-13 16:34:16,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:34:16,525 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:34:16,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 50 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:34:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-13 16:34:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-12-13 16:34:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:34:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-12-13 16:34:16,536 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 35 [2022-12-13 16:34:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:34:16,536 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-12-13 16:34:16,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:34:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-12-13 16:34:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 16:34:16,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:16,537 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-12-13 16:34:16,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 16:34:16,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:16,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-12-13 16:34:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:34:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508446536] [2022-12-13 16:34:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:16,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:16,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:34:16,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:34:16,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 16:34:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:16,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:34:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:34:16,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:34:16,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:34:16,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508446536] [2022-12-13 16:34:16,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508446536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:34:16,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:34:16,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:34:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82507984] [2022-12-13 16:34:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:34:16,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:34:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:34:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:34:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:34:16,990 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:34:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:17,493 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-12-13 16:34:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:34:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-12-13 16:34:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:17,494 INFO L225 Difference]: With dead ends: 68 [2022-12-13 16:34:17,494 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 16:34:17,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:34:17,495 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:34:17,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 49 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:34:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 16:34:17,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-12-13 16:34:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 16:34:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-12-13 16:34:17,502 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 38 [2022-12-13 16:34:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:34:17,502 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-12-13 16:34:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 16:34:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-12-13 16:34:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 16:34:17,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:17,504 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-12-13 16:34:17,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 16:34:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:17,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-12-13 16:34:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:34:17,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664072252] [2022-12-13 16:34:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:34:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:34:17,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:34:17,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 16:34:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:17,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 16:34:17,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:19,001 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 27 treesize of output 23 [2022-12-13 16:34:20,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:34:20,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:34:20,437 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 31 treesize of output 11 [2022-12-13 16:34:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:34:20,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:34:21,949 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 59 treesize of output 55 [2022-12-13 16:34:21,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 107 treesize of output 103 [2022-12-13 16:34:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:34:56,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:34:56,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664072252] [2022-12-13 16:34:56,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664072252] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:34:56,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:34:56,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 39 [2022-12-13 16:34:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566834661] [2022-12-13 16:34:56,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:34:56,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 16:34:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:34:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 16:34:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1274, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 16:34:56,946 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:35:05,246 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 70 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:35:17,795 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 43 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:35:30,957 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 46 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:35:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:35:58,838 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2022-12-13 16:35:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 16:35:58,848 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-12-13 16:35:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:35:58,849 INFO L225 Difference]: With dead ends: 110 [2022-12-13 16:35:58,849 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 16:35:58,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=706, Invalid=3986, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 16:35:58,851 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 140 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:35:58,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 176 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-12-13 16:35:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 16:35:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2022-12-13 16:35:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:35:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2022-12-13 16:35:58,866 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 40 [2022-12-13 16:35:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:58,866 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2022-12-13 16:35:58,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 16:35:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2022-12-13 16:35:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 16:35:58,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:58,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:35:58,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 16:35:59,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:35:59,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-12-13 16:35:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:35:59,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549227784] [2022-12-13 16:35:59,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:35:59,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:35:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:35:59,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:35:59,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 16:35:59,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:35:59,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:35:59,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:35:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:36:00,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:36:00,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:36:00,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549227784] [2022-12-13 16:36:00,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549227784] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:00,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:00,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-12-13 16:36:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225915216] [2022-12-13 16:36:00,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:00,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:36:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:36:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:36:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:36:00,477 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 16:36:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:02,724 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2022-12-13 16:36:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 16:36:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-12-13 16:36:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:02,727 INFO L225 Difference]: With dead ends: 130 [2022-12-13 16:36:02,727 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 16:36:02,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-12-13 16:36:02,728 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 97 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:02,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 100 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 16:36:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 16:36:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2022-12-13 16:36:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:36:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-12-13 16:36:02,743 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 42 [2022-12-13 16:36:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:02,743 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-12-13 16:36:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 16:36:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-12-13 16:36:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 16:36:02,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:02,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-13 16:36:02,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-13 16:36:02,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:02,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 3 times [2022-12-13 16:36:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:36:02,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015165660] [2022-12-13 16:36:02,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:36:02,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:02,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:36:02,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:36:02,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 16:36:03,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 16:36:03,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:03,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:36:03,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:36:04,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:36:04,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:36:04,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015165660] [2022-12-13 16:36:04,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015165660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:04,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:04,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2022-12-13 16:36:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796111143] [2022-12-13 16:36:04,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:36:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:36:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:36:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:36:04,549 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:36:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:06,293 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2022-12-13 16:36:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 16:36:06,293 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2022-12-13 16:36:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:06,294 INFO L225 Difference]: With dead ends: 123 [2022-12-13 16:36:06,294 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 16:36:06,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-12-13 16:36:06,295 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 112 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:06,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 127 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 16:36:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 16:36:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2022-12-13 16:36:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:36:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2022-12-13 16:36:06,312 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 45 [2022-12-13 16:36:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:06,312 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2022-12-13 16:36:06,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 17 states have internal predecessors, (63), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:36:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2022-12-13 16:36:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 16:36:06,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:06,313 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:36:06,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 16:36:06,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:06,514 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 139659495, now seen corresponding path program 4 times [2022-12-13 16:36:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:36:06,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646966511] [2022-12-13 16:36:06,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:36:06,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:36:06,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:36:06,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 16:36:06,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:36:06,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:06,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 16:36:06,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:36:07,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 16:36:08,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:36:08,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646966511] [2022-12-13 16:36:08,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646966511] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:08,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:08,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-12-13 16:36:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944007191] [2022-12-13 16:36:08,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:08,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 16:36:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:36:08,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 16:36:08,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-12-13 16:36:08,332 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:36:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:11,415 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2022-12-13 16:36:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 16:36:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-12-13 16:36:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:11,421 INFO L225 Difference]: With dead ends: 200 [2022-12-13 16:36:11,422 INFO L226 Difference]: Without dead ends: 143 [2022-12-13 16:36:11,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:36:11,422 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:11,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 193 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 16:36:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-13 16:36:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2022-12-13 16:36:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 119 states have internal predecessors, (143), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 16:36:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2022-12-13 16:36:11,459 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 49 [2022-12-13 16:36:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:11,460 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2022-12-13 16:36:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 16:36:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2022-12-13 16:36:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 16:36:11,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:11,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-13 16:36:11,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 16:36:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:11,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 595301749, now seen corresponding path program 5 times [2022-12-13 16:36:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:36:11,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249134337] [2022-12-13 16:36:11,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:36:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:11,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:36:11,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:36:11,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 16:36:11,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 16:36:11,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:11,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:36:11,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 16:36:11,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 16:36:12,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:36:12,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249134337] [2022-12-13 16:36:12,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249134337] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:12,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:36:12,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2022-12-13 16:36:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123366684] [2022-12-13 16:36:12,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:12,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:36:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:36:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:36:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:36:12,644 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:15,030 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2022-12-13 16:36:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 16:36:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-12-13 16:36:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:15,036 INFO L225 Difference]: With dead ends: 187 [2022-12-13 16:36:15,036 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 16:36:15,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:36:15,037 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 110 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:15,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 132 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 16:36:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 16:36:15,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2022-12-13 16:36:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 16:36:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2022-12-13 16:36:15,059 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 50 [2022-12-13 16:36:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:15,059 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2022-12-13 16:36:15,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:36:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2022-12-13 16:36:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:36:15,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:15,060 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 16:36:15,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 16:36:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:15,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:15,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:15,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2022-12-13 16:36:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:36:15,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524690613] [2022-12-13 16:36:15,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:36:15,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:36:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:36:15,270 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:36:15,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_409435ac-fb47-4e2e-8cd6-afba7a01e181/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 16:36:15,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-12-13 16:36:15,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:36:15,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 16:36:15,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:16,348 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 21 treesize of output 17 [2022-12-13 16:36:16,871 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 34 treesize of output 33 [2022-12-13 16:36:17,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:17,576 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-12-13 16:36:17,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2022-12-13 16:36:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:18,260 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-12-13 16:36:18,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 16:36:31,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:36:32,018 INFO L321 Elim1Store]: treesize reduction 159, result has 40.9 percent of original size [2022-12-13 16:36:32,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 141 [2022-12-13 16:36:39,466 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:36:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:38:14,759 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 104 DAG size of output: 88 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 16:38:14,760 INFO L321 Elim1Store]: treesize reduction 50, result has 91.2 percent of original size [2022-12-13 16:38:14,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 178 treesize of output 637 [2022-12-13 16:41:45,827 WARN L233 SmtUtils]: Spent 1.67m on a formula simplification. DAG size of input: 139 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)