./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/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_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ncomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/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_ccbcf628-9c89-43d4-b745-054331c85385/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 c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:19:07,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:19:07,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:19:07,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:19:07,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:19:07,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:19:07,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:19:07,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:19:07,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:19:07,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:19:07,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:19:07,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:19:07,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:19:07,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:19:07,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:19:07,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:19:07,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:19:07,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:19:07,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:19:07,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:19:07,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:19:07,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:19:07,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:19:07,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:19:07,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:19:07,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:19:07,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:19:07,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:19:07,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:19:07,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:19:07,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:19:07,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:19:07,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:19:07,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:19:07,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:19:07,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:19:07,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:19:07,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:19:07,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:19:07,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:19:07,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:19:07,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:19:07,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:19:07,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:19:07,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:19:07,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:19:07,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:19:07,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:19:07,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:19:07,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:19:07,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:19:07,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:19:07,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:19:07,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:07,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:19:07,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:19:07,378 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:19:07,378 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_ccbcf628-9c89-43d4-b745-054331c85385/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d [2022-12-13 13:19:07,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:19:07,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:19:07,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:19:07,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:19:07,559 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:19:07,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-fpi/ncomp.c [2022-12-13 13:19:10,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:19:10,236 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:19:10,237 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/sv-benchmarks/c/array-fpi/ncomp.c [2022-12-13 13:19:10,241 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/data/16da783c2/7ac284edb54b4364b7b4b225d45e4c8a/FLAG4fd550a8d [2022-12-13 13:19:10,253 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/data/16da783c2/7ac284edb54b4364b7b4b225d45e4c8a [2022-12-13 13:19:10,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:19:10,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:19:10,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:10,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:19:10,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:19:10,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d201b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10, skipping insertion in model container [2022-12-13 13:19:10,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:19:10,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:19:10,378 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_ccbcf628-9c89-43d4-b745-054331c85385/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2022-12-13 13:19:10,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:10,400 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:19:10,409 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_ccbcf628-9c89-43d4-b745-054331c85385/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2022-12-13 13:19:10,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:10,425 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:19:10,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10 WrapperNode [2022-12-13 13:19:10,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:10,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:10,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:19:10,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:19:10,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,452 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2022-12-13 13:19:10,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:10,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:19:10,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:19:10,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:19:10,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:19:10,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:19:10,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:19:10,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:19:10,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (1/1) ... [2022-12-13 13:19:10,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:10,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:19:10,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:19:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:19:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:19:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:19:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:19:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:19:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:19:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:19:10,574 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:19:10,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:19:10,710 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:19:10,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:19:10,715 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 13:19:10,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:19:10 BoogieIcfgContainer [2022-12-13 13:19:10,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:19:10,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:19:10,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:19:10,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:19:10,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:19:10" (1/3) ... [2022-12-13 13:19:10,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f037911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:19:10, skipping insertion in model container [2022-12-13 13:19:10,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:10" (2/3) ... [2022-12-13 13:19:10,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f037911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:19:10, skipping insertion in model container [2022-12-13 13:19:10,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:19:10" (3/3) ... [2022-12-13 13:19:10,723 INFO L112 eAbstractionObserver]: Analyzing ICFG ncomp.c [2022-12-13 13:19:10,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:19:10,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:19:10,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:19:10,777 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;@7f9b2615, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:19:10,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:19:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 13:19:10,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:10,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:10,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2022-12-13 13:19:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:10,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425078054] [2022-12-13 13:19:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425078054] [2022-12-13 13:19:10,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 13:19:10,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477515326] [2022-12-13 13:19:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:10,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:10,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:10,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:19:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:10,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 13:19:10,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:11,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:11,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477515326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:11,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:11,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:19:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837042741] [2022-12-13 13:19:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:11,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:19:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:19:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:19:11,037 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:11,049 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-12-13 13:19:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:19:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 13:19:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:11,056 INFO L225 Difference]: With dead ends: 44 [2022-12-13 13:19:11,056 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 13:19:11,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:19:11,061 INFO L413 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 13:19:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 13:19:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-13 13:19:11,085 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-12-13 13:19:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:11,085 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-13 13:19:11,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-13 13:19:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 13:19:11,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:11,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:11,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:19:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:11,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:11,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2022-12-13 13:19:11,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:11,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074417155] [2022-12-13 13:19:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:11,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:11,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:11,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601397135] [2022-12-13 13:19:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:11,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:11,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:19:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:11,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 13:19:11,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:11,707 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-12-13 13:19:11,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2022-12-13 13:19:11,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:11,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:11,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:12,392 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 5 treesize of output 3 [2022-12-13 13:19:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:12,560 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 0 case distinctions, treesize of input 41 treesize of output 14 [2022-12-13 13:19:12,564 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 5 treesize of output 3 [2022-12-13 13:19:12,567 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 5 treesize of output 3 [2022-12-13 13:19:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:12,575 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 0 case distinctions, treesize of input 48 treesize of output 19 [2022-12-13 13:19:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:12,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:12,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074417155] [2022-12-13 13:19:12,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601397135] [2022-12-13 13:19:12,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601397135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:12,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:12,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:19:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128179537] [2022-12-13 13:19:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:19:12,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:19:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:19:12,668 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:12,770 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-12-13 13:19:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:19:12,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 13:19:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:12,772 INFO L225 Difference]: With dead ends: 39 [2022-12-13 13:19:12,772 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 13:19:12,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:19:12,773 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:12,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 51 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 13:19:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-12-13 13:19:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-12-13 13:19:12,778 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2022-12-13 13:19:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:12,779 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-12-13 13:19:12,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-12-13 13:19:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 13:19:12,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:12,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:12,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:19:12,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:12,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2022-12-13 13:19:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:12,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221249905] [2022-12-13 13:19:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:12,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:13,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:13,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672058541] [2022-12-13 13:19:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:13,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:13,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:13,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:13,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:19:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:13,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:19:13,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:13,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:13,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:13,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221249905] [2022-12-13 13:19:13,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:13,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672058541] [2022-12-13 13:19:13,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672058541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:13,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:13,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:19:13,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70142356] [2022-12-13 13:19:13,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:13,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:19:13,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:19:13,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:19:13,233 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:13,313 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-12-13 13:19:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:19:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 13:19:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:13,314 INFO L225 Difference]: With dead ends: 62 [2022-12-13 13:19:13,314 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 13:19:13,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 13:19:13,316 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:13,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 13:19:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2022-12-13 13:19:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-12-13 13:19:13,321 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2022-12-13 13:19:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:13,322 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-12-13 13:19:13,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-12-13 13:19:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 13:19:13,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:13,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:13,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:19:13,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:13,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2022-12-13 13:19:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:13,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853812737] [2022-12-13 13:19:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:13,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:13,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622900144] [2022-12-13 13:19:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:13,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:13,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:13,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:19:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:13,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:19:13,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:13,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:13,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853812737] [2022-12-13 13:19:13,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:13,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622900144] [2022-12-13 13:19:13,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622900144] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:13,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:13,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-12-13 13:19:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491393009] [2022-12-13 13:19:13,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:19:13,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:19:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:13,639 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:13,732 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-12-13 13:19:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:19:13,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 13:19:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:13,733 INFO L225 Difference]: With dead ends: 53 [2022-12-13 13:19:13,733 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 13:19:13,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:19:13,735 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:13,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 13:19:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2022-12-13 13:19:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-13 13:19:13,741 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2022-12-13 13:19:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:13,741 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-13 13:19:13,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-13 13:19:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 13:19:13,742 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:13,742 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:13,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:19:13,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:13,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2022-12-13 13:19:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:13,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198864268] [2022-12-13 13:19:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:13,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:13,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:13,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731811617] [2022-12-13 13:19:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:13,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:13,994 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:13,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:19:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:14,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:19:14,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:14,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198864268] [2022-12-13 13:19:14,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:14,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731811617] [2022-12-13 13:19:14,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731811617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:14,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:14,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:19:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061932038] [2022-12-13 13:19:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:19:14,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:19:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:14,083 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:14,146 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-12-13 13:19:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:19:14,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 13:19:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:14,147 INFO L225 Difference]: With dead ends: 48 [2022-12-13 13:19:14,148 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 13:19:14,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:19:14,149 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:14,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 13:19:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-12-13 13:19:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-13 13:19:14,152 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2022-12-13 13:19:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:14,153 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-13 13:19:14,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-13 13:19:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 13:19:14,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:14,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:14,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:19:14,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:14,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2022-12-13 13:19:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:14,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798172489] [2022-12-13 13:19:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:14,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:14,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:14,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780465587] [2022-12-13 13:19:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:14,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:14,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:14,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:19:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:14,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 13:19:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:14,716 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-12-13 13:19:14,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2022-12-13 13:19:14,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:14,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:14,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:14,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:14,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:14,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 93 treesize of output 84 [2022-12-13 13:19:14,832 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 5 treesize of output 3 [2022-12-13 13:19:14,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:14,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:14,911 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-12-13 13:19:14,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 92 [2022-12-13 13:19:14,940 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 5 treesize of output 3 [2022-12-13 13:19:14,949 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 5 treesize of output 3 [2022-12-13 13:19:14,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:14,970 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 0 case distinctions, treesize of input 48 treesize of output 11 [2022-12-13 13:19:14,974 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 5 treesize of output 3 [2022-12-13 13:19:15,102 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 14 treesize of output 12 [2022-12-13 13:19:15,117 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse4 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse1 (not .cse4)) (.cse0 (not .cse3))) (and (<= (mod c_~N~0 4294967296) 536870911) .cse0 .cse1 (let ((.cse2 (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (or (and .cse2 .cse3) (and (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (and .cse2 .cse4 (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse6 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20))) (and (= c_~N~0 (select v_DerPreprocessor_20 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse5 (select .cse6 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_19 (select .cse6 |c_ULTIMATE.start_main_~b~0#1.base|)))))) (and .cse2 .cse1 (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int)) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse8 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14))) (let ((.cse11 (store (store (store (store (store (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17))) (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse9 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse7 (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_15 .cse9) (= v_DerPreprocessor_12 .cse10) (= .cse7 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|)) (= c_~N~0 (select v_DerPreprocessor_17 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= c_~N~0 (select v_DerPreprocessor_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse5 .cse9) (= .cse5 .cse10))))))))) .cse0)))))) is different from true [2022-12-13 13:19:15,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:15,155 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-13 13:19:15,155 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 2 case distinctions, treesize of input 88 treesize of output 87 [2022-12-13 13:19:15,159 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 5 treesize of output 3 [2022-12-13 13:19:15,183 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 5 treesize of output 3 [2022-12-13 13:19:15,223 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 14 treesize of output 16 [2022-12-13 13:19:15,265 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 21 treesize of output 20 [2022-12-13 13:19:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 13:19:15,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:15,465 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_313 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-12-13 13:19:15,479 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_313 (Array Int Int)) (v_ArrVal_312 (Array Int Int))) (= c_~N~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_312) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-12-13 13:19:15,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:15,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:19:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 13:19:15,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:15,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798172489] [2022-12-13 13:19:15,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:15,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780465587] [2022-12-13 13:19:15,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780465587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:15,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:15,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-12-13 13:19:15,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602989281] [2022-12-13 13:19:15,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:15,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 13:19:15,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:15,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 13:19:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=121, Unknown=3, NotChecked=72, Total=240 [2022-12-13 13:19:15,491 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:15,536 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (.cse5 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse1 (<= (mod c_~N~0 4294967296) 536870911)) (.cse0 (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) (.cse3 (not .cse5)) (.cse2 (not .cse4))) (and .cse0 .cse1 (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse1) (and (not .cse1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0))) .cse2 (forall ((v_ArrVal_313 (Array Int Int)) (v_ArrVal_312 (Array Int Int))) (= c_~N~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_312) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_313) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) .cse3 (or (and .cse0 .cse4) (and (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (and .cse0 .cse5 (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse7 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_19) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_20))) (and (= c_~N~0 (select v_DerPreprocessor_20 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse6 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.base|)) (= v_DerPreprocessor_19 (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|)))))) (and .cse0 .cse3 (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int)) (v_DerPreprocessor_13 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse9 (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_12) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_13) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_14))) (let ((.cse12 (store (store (store (store (store (store .cse9 |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~c~0#1.base| v_DerPreprocessor_17))) (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse10 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse8 (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|)) (= v_DerPreprocessor_15 .cse10) (= v_DerPreprocessor_12 .cse11) (= .cse8 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|)) (= c_~N~0 (select v_DerPreprocessor_17 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= c_~N~0 (select v_DerPreprocessor_14 |c_ULTIMATE.start_main_~c~0#1.offset|)) (= .cse6 .cse10) (= .cse6 .cse11))))))))) .cse2)) (= |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from true [2022-12-13 13:19:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:15,942 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-12-13 13:19:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:19:15,942 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-13 13:19:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:15,943 INFO L225 Difference]: With dead ends: 66 [2022-12-13 13:19:15,943 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 13:19:15,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=378, Unknown=4, NotChecked=180, Total=702 [2022-12-13 13:19:15,944 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:15,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 84 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 152 Unchecked, 0.2s Time] [2022-12-13 13:19:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 13:19:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2022-12-13 13:19:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-12-13 13:19:15,953 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 20 [2022-12-13 13:19:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:15,953 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-12-13 13:19:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-12-13 13:19:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 13:19:15,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:15,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:15,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:19:16,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:16,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash 803751580, now seen corresponding path program 2 times [2022-12-13 13:19:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016386024] [2022-12-13 13:19:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:16,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:16,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:16,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569366208] [2022-12-13 13:19:16,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:19:16,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:16,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:16,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:19:16,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:19:16,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:19:16,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:19:16,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:19:16,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:19:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:16,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016386024] [2022-12-13 13:19:16,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:16,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569366208] [2022-12-13 13:19:16,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569366208] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:16,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:16,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 13:19:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341567347] [2022-12-13 13:19:16,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:16,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:19:16,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:16,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:19:16,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:19:16,310 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:16,482 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2022-12-13 13:19:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:19:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-13 13:19:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:16,483 INFO L225 Difference]: With dead ends: 86 [2022-12-13 13:19:16,483 INFO L226 Difference]: Without dead ends: 72 [2022-12-13 13:19:16,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:19:16,485 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:16,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 64 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-13 13:19:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 48. [2022-12-13 13:19:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2022-12-13 13:19:16,494 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 22 [2022-12-13 13:19:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:16,495 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2022-12-13 13:19:16,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2022-12-13 13:19:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 13:19:16,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:16,495 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:16,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:19:16,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:19:16,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:16,698 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2022-12-13 13:19:16,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:16,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758872200] [2022-12-13 13:19:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:16,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:16,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:16,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448189616] [2022-12-13 13:19:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:16,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:16,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:16,762 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:16,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:19:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:16,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 13:19:16,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:16,955 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:19:16,956 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 23 treesize of output 19 [2022-12-13 13:19:16,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:16,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:16,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:16,965 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 0 case distinctions, treesize of input 22 treesize of output 22 [2022-12-13 13:19:16,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:16,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:19:16,994 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-13 13:19:17,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:17,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-13 13:19:17,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:19:17,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-12-13 13:19:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:17,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:17,944 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_448 Int)) (= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_447))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|))) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse1 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_448)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2022-12-13 13:19:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 13:19:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:17,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758872200] [2022-12-13 13:19:17,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:17,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448189616] [2022-12-13 13:19:17,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448189616] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:17,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:17,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-12-13 13:19:17,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083461567] [2022-12-13 13:19:17,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:17,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 13:19:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 13:19:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=277, Unknown=1, NotChecked=34, Total=380 [2022-12-13 13:19:17,958 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:21,170 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2022-12-13 13:19:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 13:19:21,170 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 13:19:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:21,171 INFO L225 Difference]: With dead ends: 113 [2022-12-13 13:19:21,171 INFO L226 Difference]: Without dead ends: 111 [2022-12-13 13:19:21,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=352, Invalid=1291, Unknown=1, NotChecked=78, Total=1722 [2022-12-13 13:19:21,173 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 172 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:21,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 116 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 217 Invalid, 0 Unknown, 59 Unchecked, 0.8s Time] [2022-12-13 13:19:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-13 13:19:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 68. [2022-12-13 13:19:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2022-12-13 13:19:21,189 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 24 [2022-12-13 13:19:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:21,189 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2022-12-13 13:19:21,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2022-12-13 13:19:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 13:19:21,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:21,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:21,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:19:21,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 13:19:21,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1455292262, now seen corresponding path program 3 times [2022-12-13 13:19:21,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:21,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769178882] [2022-12-13 13:19:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:21,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:21,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535422247] [2022-12-13 13:19:21,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:19:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:21,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:21,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:19:21,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 13:19:21,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:19:21,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:19:21,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:19:21,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:19:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:21,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769178882] [2022-12-13 13:19:21,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:21,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535422247] [2022-12-13 13:19:21,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535422247] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:21,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:21,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-12-13 13:19:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526341794] [2022-12-13 13:19:21,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:21,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:19:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:19:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:19:21,631 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:21,910 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2022-12-13 13:19:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 13:19:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 13:19:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:21,911 INFO L225 Difference]: With dead ends: 151 [2022-12-13 13:19:21,911 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 13:19:21,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:19:21,913 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:21,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 68 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:19:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 13:19:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 52. [2022-12-13 13:19:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-12-13 13:19:21,925 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 24 [2022-12-13 13:19:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:21,925 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-12-13 13:19:21,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-12-13 13:19:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 13:19:21,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:21,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:21,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 13:19:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 13:19:22,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1672696980, now seen corresponding path program 4 times [2022-12-13 13:19:22,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:22,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656108980] [2022-12-13 13:19:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:22,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:22,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906105476] [2022-12-13 13:19:22,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:19:22,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:22,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:22,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:22,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:19:22,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:19:22,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:19:22,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:19:22,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 13:19:22,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 13:19:22,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:22,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656108980] [2022-12-13 13:19:22,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:22,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906105476] [2022-12-13 13:19:22,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906105476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:22,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:22,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-12-13 13:19:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144555448] [2022-12-13 13:19:22,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:19:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:19:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:19:22,314 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:22,533 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-12-13 13:19:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 13:19:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-13 13:19:22,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:22,534 INFO L225 Difference]: With dead ends: 100 [2022-12-13 13:19:22,534 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 13:19:22,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:19:22,535 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:22,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 64 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:19:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 13:19:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2022-12-13 13:19:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-12-13 13:19:22,546 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 30 [2022-12-13 13:19:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:22,546 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-12-13 13:19:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-12-13 13:19:22,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 13:19:22,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:22,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:22,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:19:22,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:19:22,748 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554158, now seen corresponding path program 5 times [2022-12-13 13:19:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:22,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593908100] [2022-12-13 13:19:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:22,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045275066] [2022-12-13 13:19:22,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:19:22,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:22,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:22,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:22,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:31:03,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 13:31:03,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:31:04,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 13:31:04,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:31:04,053 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 14 treesize of output 12 [2022-12-13 13:31:04,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,066 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:31:04,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-12-13 13:31:04,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:31:04,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:31:04,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:31:04,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:31:04,160 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 14 treesize of output 16 [2022-12-13 13:31:04,183 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 14 treesize of output 16 [2022-12-13 13:31:04,197 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 14 treesize of output 16 [2022-12-13 13:31:04,225 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 57 treesize of output 50 [2022-12-13 13:31:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-12-13 13:31:04,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 73 treesize of output 24 [2022-12-13 13:31:04,273 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 57 treesize of output 50 [2022-12-13 13:31:04,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-12-13 13:31:04,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:04,321 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 21 treesize of output 20 [2022-12-13 13:31:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:31:04,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:31:04,885 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_693 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_693) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-12-13 13:31:04,904 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_690 (Array Int Int)) (v_ArrVal_693 (Array Int Int))) (= c_~N~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_690) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_693) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) is different from false [2022-12-13 13:31:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 10 not checked. [2022-12-13 13:31:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:31:04,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593908100] [2022-12-13 13:31:04,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:31:04,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045275066] [2022-12-13 13:31:04,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045275066] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:31:04,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:31:04,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2022-12-13 13:31:04,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703670710] [2022-12-13 13:31:04,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:31:04,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 13:31:04,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:31:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 13:31:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=338, Unknown=2, NotChecked=82, Total=552 [2022-12-13 13:31:04,926 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:31:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:31:06,312 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2022-12-13 13:31:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 13:31:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-13 13:31:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:31:06,312 INFO L225 Difference]: With dead ends: 135 [2022-12-13 13:31:06,313 INFO L226 Difference]: Without dead ends: 133 [2022-12-13 13:31:06,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 14 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=343, Invalid=923, Unknown=2, NotChecked=138, Total=1406 [2022-12-13 13:31:06,313 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 193 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:31:06,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 151 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 369 Invalid, 0 Unknown, 85 Unchecked, 0.8s Time] [2022-12-13 13:31:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-13 13:31:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 63. [2022-12-13 13:31:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:31:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2022-12-13 13:31:06,331 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 32 [2022-12-13 13:31:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:31:06,332 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2022-12-13 13:31:06,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:31:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2022-12-13 13:31:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 13:31:06,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:31:06,333 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:31:06,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 13:31:06,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:31:06,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:31:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:31:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash 505093188, now seen corresponding path program 2 times [2022-12-13 13:31:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:31:06,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241154400] [2022-12-13 13:31:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:31:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:31:06,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:31:06,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820991306] [2022-12-13 13:31:06,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:31:06,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:31:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:31:06,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:31:06,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:31:06,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:31:06,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:31:06,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-13 13:31:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:31:06,841 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:31:06,841 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 23 treesize of output 19 [2022-12-13 13:31:06,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:06,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:06,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2022-12-13 13:31:06,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2022-12-13 13:31:06,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 13:31:06,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:31:06,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:31:06,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:31:06,953 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 13:31:06,953 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 2 case distinctions, treesize of input 124 treesize of output 119 [2022-12-13 13:31:06,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:31:06,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:06,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:06,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:06,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-12-13 13:31:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,125 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:31:07,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 54 [2022-12-13 13:31:07,304 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 13:31:07,305 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 2 case distinctions, treesize of input 153 treesize of output 142 [2022-12-13 13:31:07,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:31:07,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-12-13 13:31:07,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 175 treesize of output 108 [2022-12-13 13:31:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:31:07,494 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-13 13:31:07,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 64 [2022-12-13 13:31:07,654 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:31:07,655 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 1 case distinctions, treesize of input 189 treesize of output 174 [2022-12-13 13:31:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:31:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-12-13 13:31:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:31:07,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:31:07,885 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-13 13:31:07,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 78 [2022-12-13 13:31:08,394 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-12-13 13:31:08,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 120 treesize of output 64 [2022-12-13 13:31:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:31:08,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:31:22,614 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 146 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:32:13,687 WARN L233 SmtUtils]: Spent 22.60s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:32:13,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:32:13,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:32:13,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:32:13,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:32:13,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:32:13,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:32:13,717 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-13 13:32:13,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1079 treesize of output 1 [2022-12-13 13:32:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:32:13,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:32:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241154400] [2022-12-13 13:32:13,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:32:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820991306] [2022-12-13 13:32:13,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820991306] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:32:13,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:32:13,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2022-12-13 13:32:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954083786] [2022-12-13 13:32:13,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:32:13,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 13:32:13,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:32:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 13:32:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1025, Unknown=9, NotChecked=0, Total=1190 [2022-12-13 13:32:13,720 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:32:16,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:32:28,576 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 264 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:32:36,126 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse147 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse148 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse149 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse18 (<= .cse149 2147483647)) (.cse10 (<= .cse148 2147483647)) (.cse145 (* .cse149 8)) (.cse146 (* .cse148 8)) (.cse110 (<= .cse147 2147483647)) (.cse27 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse49 (* 8 .cse147))) (let ((.cse50 (select .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse49))) (.cse51 (not .cse110)) (.cse77 (<= (mod c_~N~0 4294967296) 536870911)) (.cse48 (+ .cse146 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (+ .cse145 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ .cse146 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse35 (+ .cse145 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse36 (not .cse10)) (.cse59 (+ .cse146 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (not .cse18)) (.cse68 (+ .cse145 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ c_~N~0 8)) (.cse2 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse26 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse76 (+ .cse146 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse28 (+ .cse145 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse122 (select .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse49)))) (and (or (forall ((v_ArrVal_791 Int)) (= (let ((.cse6 (store .cse7 .cse8 v_ArrVal_791))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse6))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse3 (select .cse1 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse1 .cse2 (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse3 .cse4))))) .cse9)) .cse10) (or (forall ((v_ArrVal_791 Int)) (= (let ((.cse15 (store .cse7 .cse16 v_ArrVal_791))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse15))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse11 (select .cse13 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse14 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse11 (select (select (store .cse12 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse13 .cse2 (+ .cse11 .cse14))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse14))))) .cse9)) .cse17) (= 7 (select .cse7 .cse5)) (or .cse18 (forall ((v_ArrVal_791 Int) (v_ArrVal_787 Int)) (= (let ((.cse25 (store .cse27 .cse28 v_ArrVal_787))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse19 (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse24 .cse5 (+ .cse22 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse20 (select .cse19 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse19 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse20 .cse2 (+ .cse21 .cse22))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse21 .cse22)))))))) .cse9))) (or (let ((.cse34 (+ (select .cse7 (+ .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse50))) (and (or (forall ((v_ArrVal_791 Int)) (= (let ((.cse33 (store (store .cse7 .cse8 .cse34) .cse35 v_ArrVal_791))) (let ((.cse29 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse33))) (let ((.cse30 (select .cse29 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse31 (select .cse33 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse32 (select .cse30 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse29 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse30 .cse2 (+ .cse31 .cse32))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse31 .cse32))))) .cse9)) .cse10) (or .cse36 (let ((.cse42 (store .cse7 .cse48 .cse34))) (and (or (forall ((v_ArrVal_791 Int)) (= (let ((.cse41 (store .cse42 .cse16 v_ArrVal_791))) (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse41))) (let ((.cse40 (select .cse39 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse37 (select .cse40 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse38 (select .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse37 .cse38 (select (select (store .cse39 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse40 .cse2 (+ .cse37 .cse38))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)))))) .cse9)) .cse17) (or .cse18 (forall ((v_ArrVal_791 Int)) (= (let ((.cse47 (store .cse42 .cse35 v_ArrVal_791))) (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse47))) (let ((.cse46 (select .cse45 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse43 (select .cse46 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse44 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse43 .cse44 (select (select (store .cse45 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse46 .cse2 (+ .cse43 .cse44))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)))))) .cse9)))))))) .cse51) (or (let ((.cse60 (+ 6 .cse50))) (and (or .cse36 (and (or .cse18 (forall ((v_ArrVal_786 Int) (v_ArrVal_791 Int) (v_ArrVal_787 Int)) (or (= (let ((.cse58 (store (store .cse27 .cse59 v_ArrVal_786) .cse28 v_ArrVal_787))) (let ((.cse56 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse58))) (let ((.cse57 (select .cse56 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse52 (select .cse57 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse53 (store .cse56 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse57 .cse5 (+ .cse52 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse54 (select .cse53 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse52 (select (select (store .cse53 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse54 .cse2 (+ .cse52 .cse55))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse55)))))))) .cse9) (not (<= .cse60 v_ArrVal_786))))) (or (forall ((v_ArrVal_786 Int) (v_ArrVal_791 Int) (v_ArrVal_787 Int)) (or (not (<= .cse60 v_ArrVal_786)) (= (let ((.cse67 (store (store .cse27 .cse59 v_ArrVal_786) .cse68 v_ArrVal_787))) (let ((.cse65 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse67))) (let ((.cse66 (select .cse65 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse64 (select .cse66 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse62 (store .cse65 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse66 .cse5 (+ .cse64 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse63 (select .cse62 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse61 (select .cse63 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse61 (select (select (store .cse62 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse63 .cse2 (+ .cse61 .cse64))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse64)))))))) .cse9))) .cse17))) (or (forall ((v_ArrVal_786 Int) (v_ArrVal_791 Int) (v_ArrVal_787 Int)) (or (not (<= .cse60 v_ArrVal_786)) (= .cse9 (let ((.cse75 (store (store .cse27 .cse76 v_ArrVal_786) .cse28 v_ArrVal_787))) (let ((.cse73 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse75))) (let ((.cse74 (select .cse73 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse69 (select .cse74 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse71 (store .cse73 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse74 .cse5 (+ .cse69 (select .cse75 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse72 (select .cse71 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse70 (select .cse72 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse69 .cse70 (select (select (store .cse71 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse72 .cse2 (+ .cse69 .cse70))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)))))))))))) .cse10))) .cse51) (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)) .cse77 (or .cse36 (forall ((v_ArrVal_791 Int)) (= (let ((.cse82 (store .cse7 .cse48 v_ArrVal_791))) (let ((.cse80 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse82))) (let ((.cse81 (select .cse80 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse78 (select .cse82 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse79 (select .cse81 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse78 .cse79 (select (select (store .cse80 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse81 .cse2 (+ .cse78 .cse79))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)))))) .cse9))) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse83 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (and (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= 12 (select .cse83 8)) (= 6 (select .cse83 0))))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or .cse36 (forall ((v_ArrVal_791 Int) (v_ArrVal_787 Int)) (= (let ((.cse90 (store .cse27 .cse59 v_ArrVal_787))) (let ((.cse88 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse90))) (let ((.cse89 (select .cse88 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse86 (select .cse89 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse84 (store .cse88 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse89 .cse5 (+ .cse86 (select .cse90 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse85 (select .cse84 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse87 (select .cse85 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse84 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse85 .cse2 (+ .cse86 .cse87))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse86 .cse87)))))))) .cse9))) (or (forall ((v_ArrVal_791 Int) (v_ArrVal_787 Int)) (= (let ((.cse97 (store .cse27 .cse76 v_ArrVal_787))) (let ((.cse95 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse97))) (let ((.cse96 (select .cse95 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse92 (select .cse96 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse93 (store .cse95 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse96 .cse5 (+ (select .cse97 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse92)) .cse26 v_ArrVal_791)))) (let ((.cse94 (select .cse93 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse91 (select .cse94 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse91 .cse92 (select (select (store .cse93 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse94 .cse2 (+ .cse91 .cse92))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5))))))))) .cse9)) .cse10) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse77) (and (not .cse77) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0))) (= 6 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|)) (or (forall ((v_ArrVal_791 Int) (v_ArrVal_787 Int)) (= (let ((.cse104 (store .cse27 .cse68 v_ArrVal_787))) (let ((.cse102 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse104))) (let ((.cse103 (select .cse102 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse100 (select .cse103 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse98 (store .cse102 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse103 .cse5 (+ (select .cse104 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse100)) .cse26 v_ArrVal_791)))) (let ((.cse99 (select .cse98 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse101 (select .cse99 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ (select (select (store .cse98 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse99 .cse2 (+ .cse100 .cse101))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse100 .cse101)))))))) .cse9)) .cse17) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or .cse18 (forall ((v_ArrVal_791 Int)) (= (let ((.cse109 (store .cse7 .cse35 v_ArrVal_791))) (let ((.cse106 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse109))) (let ((.cse107 (select .cse106 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse105 (select .cse109 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse108 (select .cse107 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse105 (select (select (store .cse106 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse107 .cse2 (+ .cse105 .cse108))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse108))))) .cse9))) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= 12 (select .cse27 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or .cse110 (let ((.cse116 (+ .cse122 (select .cse7 (+ (- 34359738368) .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse36 (forall ((v_ArrVal_791 Int)) (= (let ((.cse115 (store (store .cse7 .cse48 .cse116) .cse16 v_ArrVal_791))) (let ((.cse112 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse115))) (let ((.cse113 (select .cse112 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse111 (select .cse113 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse114 (select .cse115 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse111 (select (select (store .cse112 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse113 .cse2 (+ .cse111 .cse114))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse114))))) .cse9))) (or (and .cse17 (forall ((v_ArrVal_791 Int)) (= (let ((.cse121 (store (store .cse7 .cse8 .cse116) .cse35 v_ArrVal_791))) (let ((.cse119 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse121))) (let ((.cse120 (select .cse119 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse117 (select .cse121 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse118 (select .cse120 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse117 .cse118 (select (select (store .cse119 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse120 .cse2 (+ .cse117 .cse118))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)))))) .cse9))) .cse10)))) (or .cse110 (let ((.cse123 (+ .cse122 6))) (and (or .cse36 (forall ((v_ArrVal_786 Int) (v_ArrVal_791 Int) (v_ArrVal_787 Int)) (or (not (<= .cse123 v_ArrVal_786)) (= (let ((.cse130 (store (store .cse27 .cse59 v_ArrVal_786) .cse68 v_ArrVal_787))) (let ((.cse128 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse130))) (let ((.cse129 (select .cse128 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse127 (select .cse129 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse125 (store .cse128 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse129 .cse5 (+ .cse127 (select .cse130 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse126 (select .cse125 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse124 (select .cse126 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse124 (select (select (store .cse125 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse126 .cse2 (+ .cse124 .cse127))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse127)))))))) .cse9)))) (or (and (or .cse17 (forall ((v_ArrVal_786 Int) (v_ArrVal_791 Int) (v_ArrVal_787 Int)) (or (not (<= .cse123 v_ArrVal_786)) (= (let ((.cse137 (store (store .cse27 .cse76 v_ArrVal_786) .cse68 v_ArrVal_787))) (let ((.cse135 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse137))) (let ((.cse136 (select .cse135 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse134 (select .cse136 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse132 (store .cse135 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse136 .cse5 (+ (select .cse137 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse134)) .cse26 v_ArrVal_791)))) (let ((.cse133 (select .cse132 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse131 (select .cse133 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse131 (select (select (store .cse132 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse133 .cse2 (+ .cse131 .cse134))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5) .cse134)))))))) .cse9)))) (or .cse18 (forall ((v_ArrVal_786 Int) (v_ArrVal_791 Int) (v_ArrVal_787 Int)) (or (not (<= .cse123 v_ArrVal_786)) (= .cse9 (let ((.cse144 (store (store .cse27 .cse76 v_ArrVal_786) .cse28 v_ArrVal_787))) (let ((.cse142 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse144))) (let ((.cse143 (select .cse142 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse138 (select .cse143 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse140 (store .cse142 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse143 .cse5 (+ .cse138 (select .cse144 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse26 v_ArrVal_791)))) (let ((.cse141 (select .cse140 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse139 (select .cse141 |c_ULTIMATE.start_main_~c~0#1.offset|))) (+ .cse138 .cse139 (select (select (store .cse140 |c_ULTIMATE.start_main_~c~0#1.base| (store .cse141 .cse2 (+ .cse138 .cse139))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)))))))))))))) .cse10)))))))) is different from true [2022-12-13 13:32:38,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:32:40,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:32:44,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:32:47,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:32:59,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:33:00,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:33:02,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:33:05,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:33:10,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:33:17,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 13:33:28,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:33:36,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:33:38,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:33:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:33:49,089 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2022-12-13 13:33:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 13:33:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-13 13:33:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:33:49,091 INFO L225 Difference]: With dead ends: 143 [2022-12-13 13:33:49,091 INFO L226 Difference]: Without dead ends: 141 [2022-12-13 13:33:49,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 109.7s TimeCoverageRelationStatistics Valid=509, Invalid=2788, Unknown=13, NotChecked=112, Total=3422 [2022-12-13 13:33:49,092 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 238 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 57 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:33:49,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 254 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 634 Invalid, 10 Unknown, 2 Unchecked, 49.9s Time] [2022-12-13 13:33:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-13 13:33:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 67. [2022-12-13 13:33:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:33:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-12-13 13:33:49,111 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 34 [2022-12-13 13:33:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:33:49,111 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-12-13 13:33:49,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:33:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-12-13 13:33:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 13:33:49,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:33:49,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:49,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:33:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:33:49,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:33:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash -968725112, now seen corresponding path program 3 times [2022-12-13 13:33:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526980325] [2022-12-13 13:33:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:49,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:33:49,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030733035] [2022-12-13 13:33:49,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:33:49,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:49,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:33:49,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:33:49,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbcf628-9c89-43d4-b745-054331c85385/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:33:50,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 13:33:50,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:33:50,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-13 13:33:50,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:33:50,076 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:33:50,076 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 23 treesize of output 19 [2022-12-13 13:33:50,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,090 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 0 case distinctions, treesize of input 22 treesize of output 22 [2022-12-13 13:33:50,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:33:50,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-12-13 13:33:50,132 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-13 13:33:50,186 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-13 13:33:50,222 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 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-13 13:33:50,350 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-12-13 13:33:50,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-12-13 13:33:50,437 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-12-13 13:33:50,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-12-13 13:33:50,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 73 treesize of output 24 [2022-12-13 13:33:50,534 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-12-13 13:33:50,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-12-13 13:33:50,554 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 13:33:50,726 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 13:33:50,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 127 [2022-12-13 13:33:50,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:33:50,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-12-13 13:33:50,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 105 treesize of output 47 [2022-12-13 13:33:50,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,877 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:33:50,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-12-13 13:33:50,951 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 13:33:50,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 75 [2022-12-13 13:33:50,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:50,964 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-12-13 13:33:50,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 111 [2022-12-13 13:33:50,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 60 treesize of output 12 [2022-12-13 13:33:51,471 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:33:51,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 39 [2022-12-13 13:33:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:33:51,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:34:05,866 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)