./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array2_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array2_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R --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 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 --- 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-38b53e6 [2022-11-25 17:42:29,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:42:29,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:42:29,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:42:29,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:42:29,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:42:29,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:42:29,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:42:29,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:42:29,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:42:29,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:42:29,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:42:29,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:42:29,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:42:29,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:42:29,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:42:29,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:42:29,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:42:29,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:42:29,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:42:29,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:42:29,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:42:29,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:42:29,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:42:29,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:42:29,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:42:29,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:42:29,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:42:29,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:42:29,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:42:29,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:42:29,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:42:29,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:42:29,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:42:29,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:42:29,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:42:29,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:42:29,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:42:29,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:42:29,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:42:29,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:42:29,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:42:30,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:42:30,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:42:30,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:42:30,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:42:30,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:42:30,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:42:30,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:42:30,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:42:30,008 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:42:30,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:42:30,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:42:30,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:42:30,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:42:30,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:42:30,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:42:30,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:42:30,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:42:30,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:42:30,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:42:30,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:42:30,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:42:30,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:42:30,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:42:30,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:42:30,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:30,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:42:30,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:42:30,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:42:30,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:42:30,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:42:30,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:42:30,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:42:30,014 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:42:30,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:42:30,014 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_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2022-11-25 17:42:30,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:42:30,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:42:30,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:42:30,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:42:30,324 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:42:30,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-patterns/array2_pattern.c [2022-11-25 17:42:33,928 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:42:34,234 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:42:34,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/sv-benchmarks/c/array-patterns/array2_pattern.c [2022-11-25 17:42:34,242 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/data/9ca4b5f93/fe2bece499f8411bb79f0482299ee226/FLAG2d236131d [2022-11-25 17:42:34,258 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/data/9ca4b5f93/fe2bece499f8411bb79f0482299ee226 [2022-11-25 17:42:34,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:42:34,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:42:34,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:34,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:42:34,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:42:34,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390abcae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34, skipping insertion in model container [2022-11-25 17:42:34,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:42:34,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:42:34,468 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_a37d21a9-3051-41f1-a964-499d5e78edbf/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2022-11-25 17:42:34,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:34,518 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:42:34,536 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_a37d21a9-3051-41f1-a964-499d5e78edbf/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2022-11-25 17:42:34,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:34,560 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:42:34,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34 WrapperNode [2022-11-25 17:42:34,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:34,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:34,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:42:34,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:42:34,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,613 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-11-25 17:42:34,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:34,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:42:34,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:42:34,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:42:34,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,636 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:42:34,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:42:34,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:42:34,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:42:34,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (1/1) ... [2022-11-25 17:42:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:34,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:42:34,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:42:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:42:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 17:42:34,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 17:42:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:42:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:42:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:42:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:42:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:42:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:42:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:42:34,819 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:42:34,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:42:35,056 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:42:35,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:42:35,079 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:42:35,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:35 BoogieIcfgContainer [2022-11-25 17:42:35,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:42:35,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:42:35,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:42:35,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:42:35,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:42:34" (1/3) ... [2022-11-25 17:42:35,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a891aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:35, skipping insertion in model container [2022-11-25 17:42:35,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:34" (2/3) ... [2022-11-25 17:42:35,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a891aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:35, skipping insertion in model container [2022-11-25 17:42:35,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:35" (3/3) ... [2022-11-25 17:42:35,107 INFO L112 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2022-11-25 17:42:35,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:42:35,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:42:35,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:42:35,233 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;@2d8b1fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:42:35,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:42:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 17:42:35,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:35,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:35,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:35,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-11-25 17:42:35,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:35,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294114252] [2022-11-25 17:42:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:42:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:35,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294114252] [2022-11-25 17:42:35,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294114252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:35,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:35,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:42:35,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839096395] [2022-11-25 17:42:35,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:42:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:35,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:42:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:42:35,591 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 17:42:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:35,629 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-11-25 17:42:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:42:35,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-25 17:42:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:35,638 INFO L225 Difference]: With dead ends: 47 [2022-11-25 17:42:35,638 INFO L226 Difference]: Without dead ends: 21 [2022-11-25 17:42:35,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:42:35,645 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 [2022-11-25 17:42:35,646 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] [2022-11-25 17:42:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-25 17:42:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-25 17:42:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-25 17:42:35,684 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-11-25 17:42:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:35,684 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-25 17:42:35,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 17:42:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-25 17:42:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 17:42:35,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:35,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:42:35,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-11-25 17:42:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:35,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798830012] [2022-11-25 17:42:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:35,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:35,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149896530] [2022-11-25 17:42:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:35,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:35,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:35,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:35,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:42:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:35,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:42:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:42:36,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:36,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798830012] [2022-11-25 17:42:36,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:36,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149896530] [2022-11-25 17:42:36,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149896530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:36,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:36,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:42:36,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757641714] [2022-11-25 17:42:36,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:36,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:36,034 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:36,066 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-25 17:42:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:42:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-25 17:42:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:36,068 INFO L225 Difference]: With dead ends: 26 [2022-11-25 17:42:36,068 INFO L226 Difference]: Without dead ends: 22 [2022-11-25 17:42:36,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:36,072 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:36,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-25 17:42:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-25 17:42:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-25 17:42:36,081 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-11-25 17:42:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:36,084 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-25 17:42:36,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-25 17:42:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 17:42:36,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:36,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:36,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:42:36,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:36,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-11-25 17:42:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:36,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431614330] [2022-11-25 17:42:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:36,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:36,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:36,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515350894] [2022-11-25 17:42:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:36,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:36,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:42:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:42:36,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:36,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:36,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431614330] [2022-11-25 17:42:36,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:36,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515350894] [2022-11-25 17:42:36,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515350894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:36,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:36,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:42:36,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778960400] [2022-11-25 17:42:36,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:36,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:42:36,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:42:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:36,633 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:36,754 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-25 17:42:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:42:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-25 17:42:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:36,761 INFO L225 Difference]: With dead ends: 41 [2022-11-25 17:42:36,761 INFO L226 Difference]: Without dead ends: 25 [2022-11-25 17:42:36,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:42:36,767 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:36,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 68 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:42:36,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-25 17:42:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-11-25 17:42:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-25 17:42:36,786 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-11-25 17:42:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:36,786 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-25 17:42:36,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-25 17:42:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 17:42:36,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:36,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:36,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:37,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-11-25 17:42:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:37,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506350846] [2022-11-25 17:42:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:37,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:37,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:37,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004482796] [2022-11-25 17:42:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:37,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:37,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:37,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:37,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:42:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:37,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 17:42:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:37,408 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 10 treesize of output 8 [2022-11-25 17:42:37,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:37,536 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 17:42:37,550 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 28 treesize of output 28 [2022-11-25 17:42:37,559 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 12 treesize of output 11 [2022-11-25 17:42:37,581 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 12 treesize of output 11 [2022-11-25 17:42:38,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:38,598 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 162 [2022-11-25 17:42:38,623 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 162 treesize of output 154 [2022-11-25 17:42:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:38,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:42:38,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-11-25 17:42:38,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:42:38,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-11-25 17:42:39,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:42:39,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:42:39,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 14 [2022-11-25 17:42:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:39,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:39,490 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse9 .cse10 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse10)))))) (.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse4 (* 4 .cse8)) (.cse5 (<= .cse8 2147483647))) (and (or (forall ((v_ArrVal_106 (Array Int Int)) (v_ArrVal_103 (Array Int Int))) (= (let ((.cse1 (let ((.cse2 (+ .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_106) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse2 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_103) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse2) .cse3))))) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|)) 0)) (not .cse5)) (or (forall ((v_ArrVal_106 (Array Int Int)) (v_ArrVal_103 (Array Int Int))) (= (let ((.cse6 (let ((.cse7 (+ (- 17179869184) .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_106) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_103) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse7) .cse3))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse0 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse6) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0)) .cse5)))) is different from false [2022-11-25 17:42:42,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:42,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506350846] [2022-11-25 17:42:42,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:42,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004482796] [2022-11-25 17:42:42,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004482796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:42,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:42,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-25 17:42:42,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564183176] [2022-11-25 17:42:42,432 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:42:42,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:42:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:42:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=369, Unknown=2, NotChecked=40, Total=506 [2022-11-25 17:42:42,435 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:45,043 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-11-25 17:42:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 17:42:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-25 17:42:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:45,046 INFO L225 Difference]: With dead ends: 56 [2022-11-25 17:42:45,046 INFO L226 Difference]: Without dead ends: 52 [2022-11-25 17:42:45,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=214, Invalid=780, Unknown=2, NotChecked=60, Total=1056 [2022-11-25 17:42:45,048 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 93 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:45,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 93 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 17:42:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-25 17:42:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2022-11-25 17:42:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:42:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-11-25 17:42:45,079 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2022-11-25 17:42:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:45,079 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-11-25 17:42:45,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-11-25 17:42:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 17:42:45,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:45,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:45,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:45,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:45,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1336652411, now seen corresponding path program 2 times [2022-11-25 17:42:45,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:45,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493777059] [2022-11-25 17:42:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:45,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:45,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:45,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234692331] [2022-11-25 17:42:45,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:42:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:45,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:45,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:42:45,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:42:45,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:42:45,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:42:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:45,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:42:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493777059] [2022-11-25 17:42:45,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234692331] [2022-11-25 17:42:45,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234692331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:42:45,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:42:45,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-25 17:42:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447604913] [2022-11-25 17:42:45,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:42:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:42:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:42:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:42:45,987 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:42:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:46,462 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-11-25 17:42:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:42:46,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-11-25 17:42:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:46,466 INFO L225 Difference]: With dead ends: 55 [2022-11-25 17:42:46,466 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 17:42:46,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:42:46,467 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:46,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 86 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:42:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 17:42:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2022-11-25 17:42:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-25 17:42:46,487 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 28 [2022-11-25 17:42:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-25 17:42:46,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:42:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-25 17:42:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 17:42:46,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:46,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:46,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 3 times [2022-11-25 17:42:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:46,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884487940] [2022-11-25 17:42:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:46,765 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:46,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911311083] [2022-11-25 17:42:46,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:42:46,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:46,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:46,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:42:46,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 17:42:46,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:42:46,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:42:46,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:47,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:42:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884487940] [2022-11-25 17:42:47,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911311083] [2022-11-25 17:42:47,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911311083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:42:47,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:42:47,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-25 17:42:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32530602] [2022-11-25 17:42:47,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:42:47,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:42:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:42:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:42:47,437 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:42:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:47,879 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-11-25 17:42:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:42:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-11-25 17:42:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:47,884 INFO L225 Difference]: With dead ends: 36 [2022-11-25 17:42:47,885 INFO L226 Difference]: Without dead ends: 32 [2022-11-25 17:42:47,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:42:47,886 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:47,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:42:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-25 17:42:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-11-25 17:42:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:42:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-11-25 17:42:47,896 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2022-11-25 17:42:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:47,897 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-11-25 17:42:47,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:42:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-11-25 17:42:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 17:42:47,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:47,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:47,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:48,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:48,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:48,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 4 times [2022-11-25 17:42:48,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:48,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119306769] [2022-11-25 17:42:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:48,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:48,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838453238] [2022-11-25 17:42:48,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:42:48,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:48,134 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:48,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:42:48,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:42:48,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:42:48,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-25 17:42:48,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:48,645 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 10 treesize of output 8 [2022-11-25 17:42:48,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:48,794 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 17:42:48,806 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 28 treesize of output 28 [2022-11-25 17:42:48,820 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 12 treesize of output 11 [2022-11-25 17:42:48,847 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 12 treesize of output 11 [2022-11-25 17:42:49,264 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 64 treesize of output 53 [2022-11-25 17:42:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:51,188 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 176 [2022-11-25 17:42:51,211 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 171 treesize of output 161 [2022-11-25 17:42:51,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:51,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:51,285 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-25 17:42:51,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 212 [2022-11-25 17:42:51,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:51,512 INFO L321 Elim1Store]: treesize reduction 57, result has 31.3 percent of original size [2022-11-25 17:42:51,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2022-11-25 17:42:51,547 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 17:42:54,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 283 treesize of output 243 [2022-11-25 17:42:54,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:54,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:42:54,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:42:54,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:54,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:42:54,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 158 [2022-11-25 17:42:54,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:42:54,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 157 treesize of output 155 [2022-11-25 17:42:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:55,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:56,403 WARN L837 $PredicateComparison]: unable to prove that (or (not (< 1 c_~ARR_SIZE~0)) (let ((.cse12 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse13 .cse14 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse13 .cse14)))))) (.cse6 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse7 (* 4 .cse12)) (.cse8 (<= .cse12 2147483647))) (and (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_262 (Array Int Int))) (= (let ((.cse0 (let ((.cse5 (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse5 (+ .cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse5)))))) (let ((.cse2 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse0 .cse1) (select .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse2 .cse3)))) 0)) (not .cse8)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_262 (Array Int Int))) (= (let ((.cse10 (let ((.cse11 (+ (- 17179869184) .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11 (+ .cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11)))))) (let ((.cse9 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse10) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse9 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse9 .cse3) (select .cse10 .cse1) (select .cse10 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))) 0)) .cse8))))) is different from false [2022-11-25 17:42:58,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:58,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119306769] [2022-11-25 17:42:58,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:58,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838453238] [2022-11-25 17:42:58,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838453238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:58,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:58,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-25 17:42:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181734503] [2022-11-25 17:42:58,006 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:42:58,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 17:42:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 17:42:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=635, Unknown=1, NotChecked=52, Total=812 [2022-11-25 17:42:58,009 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:43:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:01,427 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-11-25 17:43:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:43:01,430 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-25 17:43:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:01,431 INFO L225 Difference]: With dead ends: 55 [2022-11-25 17:43:01,431 INFO L226 Difference]: Without dead ends: 51 [2022-11-25 17:43:01,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=205, Invalid=1058, Unknown=1, NotChecked=68, Total=1332 [2022-11-25 17:43:01,433 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:01,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 111 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 17:43:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-25 17:43:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2022-11-25 17:43:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:43:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-25 17:43:01,452 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 30 [2022-11-25 17:43:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:01,452 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-25 17:43:01,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:43:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-25 17:43:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 17:43:01,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:01,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:43:01,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:01,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 5 times [2022-11-25 17:43:01,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:01,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207780945] [2022-11-25 17:43:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:01,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:43:01,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939976896] [2022-11-25 17:43:01,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:43:01,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:01,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:01,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:01,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:43:01,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-25 17:43:01,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:43:01,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:43:01,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:02,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:43:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:43:02,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207780945] [2022-11-25 17:43:02,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:43:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939976896] [2022-11-25 17:43:02,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939976896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:43:02,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:43:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-25 17:43:02,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074657576] [2022-11-25 17:43:02,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:43:02,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:43:02,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:43:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:43:02,543 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:43:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:03,124 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2022-11-25 17:43:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:43:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-25 17:43:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:03,126 INFO L225 Difference]: With dead ends: 79 [2022-11-25 17:43:03,127 INFO L226 Difference]: Without dead ends: 67 [2022-11-25 17:43:03,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:43:03,128 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:03,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 120 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:43:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-25 17:43:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-11-25 17:43:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 17:43:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-25 17:43:03,150 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 32 [2022-11-25 17:43:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:03,151 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-25 17:43:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:43:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-25 17:43:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 17:43:03,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:03,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:43:03,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:03,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:43:03,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:03,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash -475590135, now seen corresponding path program 6 times [2022-11-25 17:43:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:03,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240853744] [2022-11-25 17:43:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:03,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:43:03,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235309869] [2022-11-25 17:43:03,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:43:03,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:03,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:03,394 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:03,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:43:03,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-25 17:43:03,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:43:03,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:43:03,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:03,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:43:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:43:04,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240853744] [2022-11-25 17:43:04,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:43:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235309869] [2022-11-25 17:43:04,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235309869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:43:04,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:43:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-25 17:43:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809824906] [2022-11-25 17:43:04,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:43:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:43:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:43:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:43:04,281 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:43:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:04,915 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2022-11-25 17:43:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:43:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-25 17:43:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:04,917 INFO L225 Difference]: With dead ends: 66 [2022-11-25 17:43:04,917 INFO L226 Difference]: Without dead ends: 62 [2022-11-25 17:43:04,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:43:04,919 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:04,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 94 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:43:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-25 17:43:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2022-11-25 17:43:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 17:43:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-11-25 17:43:04,942 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 32 [2022-11-25 17:43:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:04,942 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-11-25 17:43:04,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:43:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-11-25 17:43:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 17:43:04,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:04,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:43:04,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:05,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 7 times [2022-11-25 17:43:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277743523] [2022-11-25 17:43:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:05,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:05,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:43:05,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949689332] [2022-11-25 17:43:05,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:43:05,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:05,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:05,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:05,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:43:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:05,413 WARN L261 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-25 17:43:05,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:05,543 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 10 treesize of output 8 [2022-11-25 17:43:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:05,693 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 17:43:05,703 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 28 treesize of output 28 [2022-11-25 17:43:05,713 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 12 treesize of output 11 [2022-11-25 17:43:05,735 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 12 treesize of output 11 [2022-11-25 17:43:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:06,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:06,067 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 54 treesize of output 43 [2022-11-25 17:43:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:06,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:06,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2022-11-25 17:43:08,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:08,639 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 190 [2022-11-25 17:43:08,655 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 180 treesize of output 168 [2022-11-25 17:43:08,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:08,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:08,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:08,750 INFO L321 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-11-25 17:43:08,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 222 [2022-11-25 17:43:08,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:08,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:09,083 INFO L321 Elim1Store]: treesize reduction 85, result has 32.5 percent of original size [2022-11-25 17:43:09,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 63 [2022-11-25 17:43:09,117 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 17:43:18,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 529 treesize of output 463 [2022-11-25 17:43:18,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:43:18,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 455 treesize of output 579 [2022-11-25 17:43:18,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:43:18,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 458 treesize of output 454 [2022-11-25 17:43:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:32,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:43:48,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277743523] [2022-11-25 17:43:48,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:43:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949689332] [2022-11-25 17:43:48,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949689332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:43:48,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:43:48,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-25 17:43:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37929801] [2022-11-25 17:43:48,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:43:48,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 17:43:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 17:43:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=922, Unknown=13, NotChecked=0, Total=1056 [2022-11-25 17:43:48,382 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:43:52,608 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] [2022-11-25 17:43:55,152 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] [2022-11-25 17:44:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:05,762 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-11-25 17:44:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 17:44:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-11-25 17:44:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:05,765 INFO L225 Difference]: With dead ends: 83 [2022-11-25 17:44:05,765 INFO L226 Difference]: Without dead ends: 79 [2022-11-25 17:44:05,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=248, Invalid=1901, Unknown=13, NotChecked=0, Total=2162 [2022-11-25 17:44:05,766 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 229 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 465 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-11-25 17:44:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-25 17:44:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-11-25 17:44:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:44:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-11-25 17:44:05,798 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 34 [2022-11-25 17:44:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:05,799 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-11-25 17:44:05,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:44:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-11-25 17:44:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 17:44:05,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:05,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:05,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:44:06,008 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 8 times [2022-11-25 17:44:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114461279] [2022-11-25 17:44:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:06,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:06,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123646075] [2022-11-25 17:44:06,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:44:06,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:06,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:06,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:44:06,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:44:06,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:44:06,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:44:06,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:06,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:44:06,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114461279] [2022-11-25 17:44:06,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123646075] [2022-11-25 17:44:06,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123646075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:06,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:06,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-25 17:44:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670310067] [2022-11-25 17:44:06,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:06,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:44:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:44:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:44:06,979 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:44:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:08,096 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-11-25 17:44:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:44:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-25 17:44:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:08,098 INFO L225 Difference]: With dead ends: 113 [2022-11-25 17:44:08,098 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 17:44:08,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:44:08,099 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:08,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 155 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:44:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 17:44:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2022-11-25 17:44:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 17:44:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-11-25 17:44:08,137 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 36 [2022-11-25 17:44:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:08,138 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-11-25 17:44:08,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:44:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-11-25 17:44:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 17:44:08,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:08,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:08,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:08,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:08,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 9 times [2022-11-25 17:44:08,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:08,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808368480] [2022-11-25 17:44:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:08,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:08,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:08,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043452083] [2022-11-25 17:44:08,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:44:08,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:08,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:08,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:08,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:44:08,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 17:44:08,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:44:08,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:44:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:09,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:44:09,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808368480] [2022-11-25 17:44:09,399 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043452083] [2022-11-25 17:44:09,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043452083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:09,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:09,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-25 17:44:09,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347690018] [2022-11-25 17:44:09,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:09,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:44:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:44:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:44:09,402 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:44:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:10,420 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2022-11-25 17:44:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:44:10,421 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-25 17:44:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:10,424 INFO L225 Difference]: With dead ends: 98 [2022-11-25 17:44:10,424 INFO L226 Difference]: Without dead ends: 94 [2022-11-25 17:44:10,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:44:10,426 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 52 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:10,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 155 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:44:10,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-25 17:44:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-11-25 17:44:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 17:44:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-11-25 17:44:10,465 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 36 [2022-11-25 17:44:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:10,465 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-11-25 17:44:10,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:44:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-11-25 17:44:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 17:44:10,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:10,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:10,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:10,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:10,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:10,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:10,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2067066744, now seen corresponding path program 1 times [2022-11-25 17:44:10,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:10,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287872606] [2022-11-25 17:44:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:10,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777831464] [2022-11-25 17:44:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:10,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:10,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:10,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d21a9-3051-41f1-a964-499d5e78edbf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:44:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:10,991 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-25 17:44:11,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:11,180 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 10 treesize of output 8 [2022-11-25 17:44:11,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:11,365 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 17:44:11,377 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 28 treesize of output 28 [2022-11-25 17:44:11,386 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 12 treesize of output 11 [2022-11-25 17:44:11,408 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 12 treesize of output 11 [2022-11-25 17:44:11,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:11,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:11,796 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 54 treesize of output 43 [2022-11-25 17:44:13,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:13,570 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 183 [2022-11-25 17:44:13,586 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 178 treesize of output 168 [2022-11-25 17:44:13,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:13,675 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-25 17:44:13,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-11-25 17:44:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:13,951 INFO L321 Elim1Store]: treesize reduction 63, result has 29.2 percent of original size [2022-11-25 17:44:13,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 48 [2022-11-25 17:44:14,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:14,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:14,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:44:15,234 INFO L321 Elim1Store]: treesize reduction 269, result has 40.5 percent of original size [2022-11-25 17:44:15,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 306 treesize of output 552 [2022-11-25 17:44:16,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:17,107 INFO L321 Elim1Store]: treesize reduction 189, result has 10.8 percent of original size [2022-11-25 17:44:17,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 230 treesize of output 97 [2022-11-25 17:44:20,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:20,880 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 237 [2022-11-25 17:44:20,895 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 243 treesize of output 229 [2022-11-25 17:44:20,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:21,000 INFO L321 Elim1Store]: treesize reduction 289, result has 0.3 percent of original size [2022-11-25 17:44:21,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 205 treesize of output 273 [2022-11-25 17:44:21,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:44:21,363 INFO L321 Elim1Store]: treesize reduction 50, result has 39.8 percent of original size [2022-11-25 17:44:21,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 119 [2022-11-25 17:44:27,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 449 treesize of output 397 [2022-11-25 17:44:30,411 INFO L321 Elim1Store]: treesize reduction 65, result has 87.8 percent of original size [2022-11-25 17:44:30,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 409 treesize of output 780 [2022-11-25 17:44:30,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 441 treesize of output 401 [2022-11-25 17:47:57,168 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:48:27,267 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:49:48,676 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:04,623 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:24,354 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:24,354 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-25 17:54:25,228 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:25,815 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:52,562 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:52,563 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-25 17:54:52,576 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:52,577 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-25 17:54:54,100 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:54:54,111 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:55:20,396 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:55:41,779 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:56:14,956 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:56:34,831 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-25 17:56:34,844 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.