./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm-if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm-if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec5a38bdcfa55d3eade09a482c32f3a3863eaa8e13e2a337e00dc10a9c55f830 --- 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-5e519f3 [2022-11-03 01:57:43,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:57:43,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:57:43,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:57:43,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:57:43,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:57:43,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:57:43,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:57:43,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:57:43,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:57:43,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:57:43,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:57:43,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:57:43,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:57:43,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:57:43,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:57:43,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:57:43,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:57:43,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:57:43,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:57:43,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:57:43,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:57:43,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:57:43,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:57:43,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:57:43,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:57:43,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:57:43,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:57:43,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:57:43,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:57:43,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:57:43,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:57:43,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:57:43,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:57:43,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:57:43,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:57:43,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:57:43,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:57:43,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:57:43,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:57:43,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:57:43,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:57:43,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:57:43,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:57:43,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:57:43,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:57:43,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:57:43,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:57:43,586 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:57:43,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:57:43,587 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:57:43,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:57:43,588 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:57:43,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:57:43,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:57:43,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:57:43,589 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:57:43,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:57:43,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:57:43,590 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:57:43,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:57:43,591 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:57:43,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:57:43,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:57:43,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:57:43,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:57:43,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:57:43,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:57:43,593 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:57:43,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:57:43,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:57:43,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:57:43,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:57:43,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:57:43,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:43,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:57:43,595 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:57:43,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:57:43,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:57:43,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:57:43,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:57:43,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:57:43,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:57:43,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec5a38bdcfa55d3eade09a482c32f3a3863eaa8e13e2a337e00dc10a9c55f830 [2022-11-03 01:57:43,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:57:43,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:57:43,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:57:43,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:57:43,918 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:57:43,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-fpi/sqm-if.c [2022-11-03 01:57:43,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/data/af0705c7d/204c22f30ec94a85896599d51307a8ff/FLAG29d1b9c0f [2022-11-03 01:57:44,538 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:57:44,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/sv-benchmarks/c/array-fpi/sqm-if.c [2022-11-03 01:57:44,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/data/af0705c7d/204c22f30ec94a85896599d51307a8ff/FLAG29d1b9c0f [2022-11-03 01:57:44,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/data/af0705c7d/204c22f30ec94a85896599d51307a8ff [2022-11-03 01:57:44,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:57:44,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:57:44,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:44,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:57:44,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:57:44,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:44" (1/1) ... [2022-11-03 01:57:44,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb89f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:44, skipping insertion in model container [2022-11-03 01:57:44,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:44" (1/1) ... [2022-11-03 01:57:44,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:57:44,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:57:45,159 WARN L230 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_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/sv-benchmarks/c/array-fpi/sqm-if.c[589,602] [2022-11-03 01:57:45,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:45,198 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:57:45,213 WARN L230 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_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/sv-benchmarks/c/array-fpi/sqm-if.c[589,602] [2022-11-03 01:57:45,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:45,255 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:57:45,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45 WrapperNode [2022-11-03 01:57:45,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:45,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:45,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:57:45,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:57:45,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,296 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-11-03 01:57:45,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:45,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:57:45,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:57:45,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:57:45,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:57:45,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:57:45,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:57:45,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:57:45,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (1/1) ... [2022-11-03 01:57:45,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:45,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:45,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:57:45,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:57:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:57:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:57:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:57:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:57:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:57:45,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:57:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:57:45,494 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:57:45,496 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:57:45,719 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:57:45,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:57:45,839 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 01:57:45,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:45 BoogieIcfgContainer [2022-11-03 01:57:45,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:57:45,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:57:45,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:57:45,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:57:45,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:57:44" (1/3) ... [2022-11-03 01:57:45,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a01858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:45, skipping insertion in model container [2022-11-03 01:57:45,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:45" (2/3) ... [2022-11-03 01:57:45,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a01858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:45, skipping insertion in model container [2022-11-03 01:57:45,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:45" (3/3) ... [2022-11-03 01:57:45,851 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm-if.c [2022-11-03 01:57:45,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:57:45,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:57:45,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:57:45,947 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=FINITE_AUTOMATA, 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;@5571746b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:57:45,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:57:45,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:57:45,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:45,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:45,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1095923036, now seen corresponding path program 1 times [2022-11-03 01:57:45,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844025625] [2022-11-03 01:57:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:45,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:46,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:46,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844025625] [2022-11-03 01:57:46,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:57:46,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561990077] [2022-11-03 01:57:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:46,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:46,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:46,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:46,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:57:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:46,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:57:46,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:46,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:46,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561990077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:46,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:46,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:57:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142365657] [2022-11-03 01:57:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:46,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:46,447 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:46,498 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2022-11-03 01:57:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:57:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:57:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:46,511 INFO L225 Difference]: With dead ends: 20 [2022-11-03 01:57:46,511 INFO L226 Difference]: Without dead ends: 10 [2022-11-03 01:57:46,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:46,520 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:46,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:57:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-03 01:57:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-03 01:57:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-11-03 01:57:46,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2022-11-03 01:57:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:46,563 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-11-03 01:57:46,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-11-03 01:57:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:57:46,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:46,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:46,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 01:57:46,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash 255696374, now seen corresponding path program 1 times [2022-11-03 01:57:46,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:46,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872741476] [2022-11-03 01:57:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:46,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:46,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:46,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762156513] [2022-11-03 01:57:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:46,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:46,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:46,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:57:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:46,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:57:46,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:46,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:46,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:46,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872741476] [2022-11-03 01:57:46,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:46,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762156513] [2022-11-03 01:57:46,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762156513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:46,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:46,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498549924] [2022-11-03 01:57:46,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:46,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:57:46,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:57:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:57:46,994 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:47,036 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-03 01:57:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:57:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:57:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:47,037 INFO L225 Difference]: With dead ends: 21 [2022-11-03 01:57:47,037 INFO L226 Difference]: Without dead ends: 16 [2022-11-03 01:57:47,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:57:47,039 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:47,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:57:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-03 01:57:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2022-11-03 01:57:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-03 01:57:47,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-03 01:57:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:47,044 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-03 01:57:47,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-03 01:57:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:57:47,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:47,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:47,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:47,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 01:57:47,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash -652476163, now seen corresponding path program 1 times [2022-11-03 01:57:47,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:47,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821947764] [2022-11-03 01:57:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:47,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:47,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:47,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132268334] [2022-11-03 01:57:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:47,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:47,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:47,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:57:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:47,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 01:57:47,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:47,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:47,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:47,745 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:47,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-03 01:57:47,760 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:47,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:57:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:47,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:47,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821947764] [2022-11-03 01:57:47,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132268334] [2022-11-03 01:57:47,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132268334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221951646] [2022-11-03 01:57:47,804 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:57:47,804 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:57:47,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:57:47,813 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:57:47,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:57:48,070 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:57:48,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:57:48,239 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:57:48,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:57:48,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:57:48,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:48,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:48,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:48,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:48,668 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:57:48,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:57:48,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:48,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 127 [2022-11-03 01:57:48,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:48,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 113 treesize of output 63 [2022-11-03 01:57:49,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:57:49,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:49,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:49,204 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:57:49,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 200 [2022-11-03 01:57:49,278 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 01:57:49,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 154 [2022-11-03 01:57:49,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 137 treesize of output 62 [2022-11-03 01:57:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:49,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 38 [2022-11-03 01:57:49,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:49,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2022-11-03 01:57:49,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:49,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:49,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:49,425 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:57:49,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:57:49,456 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:57:49,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '201#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:57:49,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:57:49,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:49,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-03 01:57:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414697755] [2022-11-03 01:57:49,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:49,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:57:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:57:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:57:49,786 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:49,949 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-03 01:57:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:57:49,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:57:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:49,951 INFO L225 Difference]: With dead ends: 28 [2022-11-03 01:57:49,951 INFO L226 Difference]: Without dead ends: 26 [2022-11-03 01:57:49,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:57:49,953 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:49,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-03 01:57:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 14. [2022-11-03 01:57:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-03 01:57:49,957 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2022-11-03 01:57:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:49,958 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-03 01:57:49,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-03 01:57:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:57:49,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:49,959 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:49,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:50,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:50,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:50,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1258946262, now seen corresponding path program 2 times [2022-11-03 01:57:50,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:50,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053359942] [2022-11-03 01:57:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:50,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105974597] [2022-11-03 01:57:50,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:57:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:50,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:50,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:57:50,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 01:57:50,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:57:50,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:57:50,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:50,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:50,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053359942] [2022-11-03 01:57:50,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105974597] [2022-11-03 01:57:50,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105974597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [715836666] [2022-11-03 01:57:50,371 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:57:50,371 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:57:50,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:57:50,372 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:57:50,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:57:50,509 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:57:50,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:57:50,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 01:57:50,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:57:50,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:50,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:50,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:50,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:50,781 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:57:50,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:57:50,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:50,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 84 treesize of output 75 [2022-11-03 01:57:50,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:50,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2022-11-03 01:57:51,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:57:51,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:51,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:51,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:51,248 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:57:51,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 197 [2022-11-03 01:57:51,299 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:51,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-03 01:57:51,338 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 01:57:51,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 154 [2022-11-03 01:57:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 137 treesize of output 62 [2022-11-03 01:57:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:51,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 38 [2022-11-03 01:57:51,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:51,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:51,445 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:57:51,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:57:51,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:51,506 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:57:51,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '331#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:57:51,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:57:51,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:51,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-03 01:57:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487785498] [2022-11-03 01:57:51,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:51,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:57:51,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:51,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:57:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:57:51,949 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:52,063 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-11-03 01:57:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:52,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 01:57:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:52,064 INFO L225 Difference]: With dead ends: 35 [2022-11-03 01:57:52,065 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 01:57:52,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:57:52,066 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:52,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 18 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 01:57:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2022-11-03 01:57:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-03 01:57:52,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-03 01:57:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:52,070 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-03 01:57:52,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-03 01:57:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:57:52,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:52,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:52,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:52,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2034389572, now seen corresponding path program 3 times [2022-11-03 01:57:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:52,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465654343] [2022-11-03 01:57:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:52,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:52,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:52,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737522459] [2022-11-03 01:57:52,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:57:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:52,323 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:52,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:57:52,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:57:52,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:57:52,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 01:57:52,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:52,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:52,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:57:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:57:52,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:52,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:57:52,880 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:52,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-03 01:57:52,895 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:52,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:57:52,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-03 01:57:52,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 28 [2022-11-03 01:57:52,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-03 01:57:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 01:57:52,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465654343] [2022-11-03 01:57:52,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737522459] [2022-11-03 01:57:52,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737522459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:52,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [913871695] [2022-11-03 01:57:52,937 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:57:52,937 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:57:52,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:57:52,938 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:57:52,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:57:53,066 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:57:53,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:57:53,200 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:57:53,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:57:53,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:57:53,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,450 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:57:53,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:57:53,579 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:57:53,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 453 treesize of output 438 [2022-11-03 01:57:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 111 treesize of output 36 [2022-11-03 01:57:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:57:53,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:53,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:53,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:53,896 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:57:53,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 200 [2022-11-03 01:57:53,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:53,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 64 [2022-11-03 01:57:53,990 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 01:57:53,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 183 treesize of output 182 [2022-11-03 01:57:54,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:54,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 165 treesize of output 90 [2022-11-03 01:57:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:54,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:54,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 41 [2022-11-03 01:57:54,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:54,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:54,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:54,075 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:57:54,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:57:54,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:57:54,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '482#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:57:54,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:57:54,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:54,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-03 01:57:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274591607] [2022-11-03 01:57:54,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:54,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:57:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:57:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:57:54,405 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:54,591 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-11-03 01:57:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:57:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:57:54,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:54,595 INFO L225 Difference]: With dead ends: 34 [2022-11-03 01:57:54,595 INFO L226 Difference]: Without dead ends: 32 [2022-11-03 01:57:54,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:57:54,597 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:54,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 33 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 77 Invalid, 0 Unknown, 6 Unchecked, 0.1s Time] [2022-11-03 01:57:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-03 01:57:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 16. [2022-11-03 01:57:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-03 01:57:54,602 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2022-11-03 01:57:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:54,602 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-03 01:57:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-03 01:57:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:57:54,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:54,603 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:54,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:54,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1347561873, now seen corresponding path program 4 times [2022-11-03 01:57:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:54,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451219528] [2022-11-03 01:57:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:54,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:54,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443977395] [2022-11-03 01:57:54,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 01:57:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:54,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:54,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:57:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:54,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:57:54,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:54,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:55,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:55,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451219528] [2022-11-03 01:57:55,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:57:55,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443977395] [2022-11-03 01:57:55,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443977395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:57:55,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1204214790] [2022-11-03 01:57:55,092 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:57:55,092 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:57:55,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:57:55,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:57:55,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:57:55,239 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:57:55,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:57:55,369 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:57:55,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:57:55,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:57:55,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:55,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,620 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:57:55,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:57:55,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 127 [2022-11-03 01:57:55,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 113 treesize of output 38 [2022-11-03 01:57:55,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:57:55,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:55,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:55,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:55,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:56,031 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:57:56,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 200 [2022-11-03 01:57:56,079 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 01:57:56,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 154 [2022-11-03 01:57:56,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:56,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 137 treesize of output 62 [2022-11-03 01:57:56,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:56,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:56,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:56,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 38 [2022-11-03 01:57:56,154 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:57:56,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-03 01:57:56,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:57:56,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:56,211 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:57:56,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:57:56,228 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:57:56,516 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '639#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:57:56,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:57:56,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:57:56,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-03 01:57:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606349077] [2022-11-03 01:57:56,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:57:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:57:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:57:56,518 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:56,673 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-11-03 01:57:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:57:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:57:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:56,674 INFO L225 Difference]: With dead ends: 48 [2022-11-03 01:57:56,674 INFO L226 Difference]: Without dead ends: 40 [2022-11-03 01:57:56,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:57:56,676 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:56,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 31 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-03 01:57:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-03 01:57:56,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-03 01:57:56,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-11-03 01:57:56,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:56,682 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-03 01:57:56,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-03 01:57:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:57:56,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:56,683 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:56,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:56,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:56,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash 824116829, now seen corresponding path program 5 times [2022-11-03 01:57:56,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:56,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65177600] [2022-11-03 01:57:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:56,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:56,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:57:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980866818] [2022-11-03 01:57:56,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:57:56,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:56,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:56,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:56,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:57:57,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 01:57:57,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:57:57,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 01:57:57,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:57,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:57:57,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:57:57,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 85 [2022-11-03 01:57:57,578 INFO L356 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-03 01:57:57,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2022-11-03 01:57:57,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 12 [2022-11-03 01:57:57,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-03 01:57:57,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:57:57,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-11-03 01:57:57,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 41 [2022-11-03 01:57:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:57,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:58,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:58:00,254 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse1 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store .cse0 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1 1) c_~N~0)))) (or (not (< 0 c_~N~0)) (< 1 c_~N~0)) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse2 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store .cse0 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse2)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse2 1) c_~N~0)))))) is different from false [2022-11-03 01:58:00,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 24 [2022-11-03 01:58:00,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:58:02,592 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse10 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (<= .cse10 2147483647)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (or (not (< 0 c_~N~0)) (< 1 c_~N~0))) (.cse6 (* .cse10 8))) (and (or (not .cse0) (let ((.cse3 (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and .cse1 (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse4 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse2 .cse3 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4 1) c_~N~0)))) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse2 .cse3 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0))))))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0)) (or .cse0 (let ((.cse8 (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse7 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7 1) c_~N~0) (= (select (store (store .cse2 .cse8 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store .cse2 .cse8 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~N~0)))) .cse1)))))) is different from false [2022-11-03 01:58:02,706 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:02,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-03 01:58:02,719 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:02,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:58:02,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 302 [2022-11-03 01:58:02,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 170 treesize of output 166 [2022-11-03 01:58:03,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 28 [2022-11-03 01:58:03,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 24 [2022-11-03 01:58:03,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:58:03,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2022-11-03 01:58:03,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 210 treesize of output 204 [2022-11-03 01:58:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-03 01:58:03,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:03,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65177600] [2022-11-03 01:58:03,390 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:03,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980866818] [2022-11-03 01:58:03,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980866818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:03,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1858100567] [2022-11-03 01:58:03,392 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:58:03,392 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:03,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:03,393 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:03,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:03,539 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:03,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:03,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 01:58:03,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:03,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:03,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:03,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:03,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:03,779 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:03,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:03,905 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:58:03,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 403 treesize of output 390 [2022-11-03 01:58:03,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:03,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 36 [2022-11-03 01:58:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:04,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:04,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:04,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:04,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:04,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:04,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:04,218 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:58:04,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 200 [2022-11-03 01:58:04,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 91 [2022-11-03 01:58:04,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:04,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 64 [2022-11-03 01:58:04,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:04,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:04,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:04,333 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:04,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:04,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:04,363 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:07,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '850#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:07,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:07,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:07,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-03 01:58:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295688718] [2022-11-03 01:58:07,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 01:58:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 01:58:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=504, Unknown=2, NotChecked=98, Total=756 [2022-11-03 01:58:07,012 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 23 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:09,256 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse2 (<= .cse11 2147483647)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (or (not (< 0 c_~N~0)) (< 1 c_~N~0))) (.cse7 (* .cse11 8)) (.cse0 (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (and (not (<= c_~N~0 0)) (or .cse0 (= (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (or (not .cse2) (let ((.cse4 (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and .cse3 (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse1 .cse4 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0)))) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse1 .cse4 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~N~0))))))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0)) (or .cse2 (let ((.cse9 (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~N~0) (= (select (store (store .cse1 .cse9 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse10 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse10)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store .cse1 .cse9 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse10 1) c_~N~0)))) .cse3))) (<= c_~N~0 2147483647) (or (< (+ (* 4294967296 (div (+ (- 1) c_~N~0) 4294967296)) 1) c_~N~0) .cse0) (= |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2022-11-03 01:58:10,306 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse10 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (<= .cse10 2147483647)) (.cse1 (or (not (< 0 c_~N~0)) (< 1 c_~N~0))) (.cse6 (* .cse10 8)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (or (not .cse0) (let ((.cse3 (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and .cse1 (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse4 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse2 .cse3 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4 1) c_~N~0)))) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse2 .cse3 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0))))))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0)) (<= 3 c_~N~0) (or .cse0 (let ((.cse8 (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse7 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7 1) c_~N~0) (= (select (store (store .cse2 .cse8 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_251 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store .cse2 .cse8 v_ArrVal_251) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~N~0)))) .cse1))) (= (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (= |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2022-11-03 01:58:11,751 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse1 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store .cse0 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1 1) c_~N~0)))) (or (not (< 0 c_~N~0)) (< 1 c_~N~0)) (<= 3 c_~N~0) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (exists ((|aux_div_v_ULTIMATE.start_main_~i~0#1_125_51| Int) (v_DerPreprocessor_9 Int) (|aux_mod_v_ULTIMATE.start_main_~i~0#1_125_51| Int)) (let ((.cse2 (* |aux_div_v_ULTIMATE.start_main_~i~0#1_125_51| 4294967296))) (and (< (+ .cse2 |aux_mod_v_ULTIMATE.start_main_~i~0#1_125_51|) c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| (+ .cse2 |aux_mod_v_ULTIMATE.start_main_~i~0#1_125_51| 1)) (<= 0 |aux_mod_v_ULTIMATE.start_main_~i~0#1_125_51|) (= (select (let ((.cse4 (* (mod |aux_mod_v_ULTIMATE.start_main_~i~0#1_125_51| 4294967296) 8))) (let ((.cse3 (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse0 .cse3 v_DerPreprocessor_9) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse0 .cse3)))) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= |aux_mod_v_ULTIMATE.start_main_~i~0#1_125_51| 2147483647)))) (<= c_~N~0 2147483647) (forall ((v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store .cse0 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_254) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0)))))) is different from false [2022-11-03 01:58:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:11,880 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-03 01:58:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 01:58:11,880 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:58:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:11,881 INFO L225 Difference]: With dead ends: 30 [2022-11-03 01:58:11,881 INFO L226 Difference]: Without dead ends: 28 [2022-11-03 01:58:11,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=210, Invalid=735, Unknown=5, NotChecked=310, Total=1260 [2022-11-03 01:58:11,882 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:11,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 26 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 109 Invalid, 0 Unknown, 57 Unchecked, 0.3s Time] [2022-11-03 01:58:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-03 01:58:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-03 01:58:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-03 01:58:11,893 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2022-11-03 01:58:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:11,893 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-03 01:58:11,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-03 01:58:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:58:11,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:11,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:11,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:12,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:12,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 221349744, now seen corresponding path program 1 times [2022-11-03 01:58:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:12,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244862133] [2022-11-03 01:58:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:12,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:12,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879594715] [2022-11-03 01:58:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:12,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:12,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:12,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:12,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:58:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:12,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 01:58:12,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:12,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:58:12,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:12,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:12,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:12,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 01:58:12,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:12,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-03 01:58:12,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-03 01:58:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:12,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:13,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 01:58:13,527 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse7 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse2 (+ (* (mod .cse1 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse0 (and (not (= .cse1 0)) (forall ((v_ArrVal_308 (Array Int Int))) (= (select (store v_ArrVal_308 .cse2 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_308) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3) 2 (select v_ArrVal_308 .cse4))) .cse5) 4)))) (or (= (select (let ((.cse6 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 1))) (store .cse6 .cse2 (+ 2 (select .cse6 .cse4) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) .cse5) 4) (not .cse0))))) is different from false [2022-11-03 01:58:13,793 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:13,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2022-11-03 01:58:13,810 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:13,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:58:13,841 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:13,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 36 [2022-11-03 01:58:13,850 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:13,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2022-11-03 01:58:13,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 62 treesize of output 56 [2022-11-03 01:58:13,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2022-11-03 01:58:13,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 39 [2022-11-03 01:58:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 01:58:13,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:13,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244862133] [2022-11-03 01:58:13,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:13,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879594715] [2022-11-03 01:58:13,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879594715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200546952] [2022-11-03 01:58:13,930 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:58:13,930 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:13,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:13,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:13,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:14,087 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:58:14,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:58:14,223 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:14,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:14,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:14,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:14,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,445 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:14,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:14,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 86 treesize of output 77 [2022-11-03 01:58:14,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:14,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 36 [2022-11-03 01:58:14,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:14,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:14,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:14,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:14,782 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:58:14,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 197 [2022-11-03 01:58:14,825 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 01:58:14,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 183 treesize of output 182 [2022-11-03 01:58:14,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 165 treesize of output 90 [2022-11-03 01:58:14,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:14,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 41 [2022-11-03 01:58:14,888 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:14,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 93 [2022-11-03 01:58:14,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:14,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:14,935 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:14,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:14,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:15,119 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:15,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1057#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:15,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:15,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:15,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-03 01:58:15,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086882598] [2022-11-03 01:58:15,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:15,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 01:58:15,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 01:58:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=434, Unknown=1, NotChecked=42, Total=552 [2022-11-03 01:58:15,554 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:15,836 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-03 01:58:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:58:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:58:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:15,837 INFO L225 Difference]: With dead ends: 33 [2022-11-03 01:58:15,837 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 01:58:15,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2022-11-03 01:58:15,838 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:15,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-11-03 01:58:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 01:58:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-03 01:58:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-03 01:58:15,845 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2022-11-03 01:58:15,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:15,845 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-03 01:58:15,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-03 01:58:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:58:15,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:15,846 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:15,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:16,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 01:58:16,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash -211311242, now seen corresponding path program 6 times [2022-11-03 01:58:16,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:16,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95811749] [2022-11-03 01:58:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:16,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:16,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:16,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100052162] [2022-11-03 01:58:16,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:58:16,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:16,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:16,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:16,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:58:16,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:58:16,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:58:16,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:58:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:16,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:16,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:16,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95811749] [2022-11-03 01:58:16,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:16,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100052162] [2022-11-03 01:58:16,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100052162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:16,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1840690832] [2022-11-03 01:58:16,339 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:58:16,340 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:16,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:16,340 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:16,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:16,471 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:58:16,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:58:16,589 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:16,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:16,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:16,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:16,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:16,807 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:16,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:16,898 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:58:16,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 453 treesize of output 438 [2022-11-03 01:58:16,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:16,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 111 treesize of output 36 [2022-11-03 01:58:17,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:17,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:17,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:17,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:17,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:17,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:17,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:17,199 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:58:17,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 197 [2022-11-03 01:58:17,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 146 [2022-11-03 01:58:17,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:17,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 94 [2022-11-03 01:58:17,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:17,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:17,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:17,306 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:17,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:17,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:17,352 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:17,865 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1246#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:17,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:17,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:17,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-03 01:58:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019248385] [2022-11-03 01:58:17,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:17,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:58:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:17,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:58:17,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:58:17,868 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:18,163 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2022-11-03 01:58:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:58:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:58:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:18,164 INFO L225 Difference]: With dead ends: 68 [2022-11-03 01:58:18,164 INFO L226 Difference]: Without dead ends: 60 [2022-11-03 01:58:18,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:58:18,165 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:18,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 41 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:58:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-03 01:58:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 31. [2022-11-03 01:58:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-03 01:58:18,176 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2022-11-03 01:58:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:18,176 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-03 01:58:18,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-03 01:58:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:58:18,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:18,177 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:18,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:18,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash -149523490, now seen corresponding path program 2 times [2022-11-03 01:58:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:18,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997667481] [2022-11-03 01:58:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:18,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:18,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146957211] [2022-11-03 01:58:18,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:58:18,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:18,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:18,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:18,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:58:18,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 01:58:18,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:58:18,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:58:18,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:58:18,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:58:18,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:18,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997667481] [2022-11-03 01:58:18,759 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146957211] [2022-11-03 01:58:18,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146957211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:18,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303615044] [2022-11-03 01:58:18,766 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:58:18,766 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:18,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:18,767 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:18,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:18,891 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:58:18,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:58:18,999 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:18,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:19,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:19,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:19,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,206 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:19,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:19,310 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:58:19,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 401 treesize of output 384 [2022-11-03 01:58:19,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:19,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2022-11-03 01:58:19,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:19,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:19,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:19,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:19,581 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:58:19,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 200 [2022-11-03 01:58:19,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 91 [2022-11-03 01:58:19,630 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:19,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 93 [2022-11-03 01:58:19,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:19,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:19,687 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:19,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:19,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:19,825 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:20,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1504#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:20,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:20,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:20,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-03 01:58:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993199925] [2022-11-03 01:58:20,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:58:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:58:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:58:20,184 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:20,409 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-11-03 01:58:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:58:20,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:58:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:20,410 INFO L225 Difference]: With dead ends: 51 [2022-11-03 01:58:20,410 INFO L226 Difference]: Without dead ends: 44 [2022-11-03 01:58:20,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:58:20,411 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:20,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 30 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-03 01:58:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 29. [2022-11-03 01:58:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-03 01:58:20,420 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 15 [2022-11-03 01:58:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:20,420 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-03 01:58:20,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-03 01:58:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:58:20,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:20,421 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:20,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-03 01:58:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:20,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -582184476, now seen corresponding path program 7 times [2022-11-03 01:58:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:20,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423825846] [2022-11-03 01:58:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:20,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:20,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340899910] [2022-11-03 01:58:20,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 01:58:20,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:20,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:20,692 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:20,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 01:58:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:21,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 01:58:21,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:21,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:21,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-03 01:58:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:21,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:21,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 01:58:21,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-03 01:58:21,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:21,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:21,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 01:58:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:21,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:58:21,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:21,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:58:22,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 28 [2022-11-03 01:58:22,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 182 treesize of output 178 [2022-11-03 01:58:22,449 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:22,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-03 01:58:22,465 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:22,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:58:22,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-03 01:58:22,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 180 treesize of output 178 [2022-11-03 01:58:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:58:22,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423825846] [2022-11-03 01:58:22,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340899910] [2022-11-03 01:58:22,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340899910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725263015] [2022-11-03 01:58:22,568 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:58:22,568 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:22,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:22,568 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:22,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:22,685 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 01:58:22,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 01:58:22,790 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:22,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:22,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:22,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:22,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:22,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:22,980 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:22,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:23,071 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:58:23,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 453 treesize of output 434 [2022-11-03 01:58:23,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:23,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 111 treesize of output 36 [2022-11-03 01:58:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:23,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:23,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:23,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:23,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:23,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:23,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:23,262 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:23,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:23,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:23,284 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:23,616 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1744#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:23,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:23,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:23,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-11-03 01:58:23,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008862296] [2022-11-03 01:58:23,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:23,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 01:58:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 01:58:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:58:23,618 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:24,085 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-11-03 01:58:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 01:58:24,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:58:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:24,086 INFO L225 Difference]: With dead ends: 61 [2022-11-03 01:58:24,086 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 01:58:24,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:58:24,087 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 53 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:24,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 69 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 39 Unchecked, 0.3s Time] [2022-11-03 01:58:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 01:58:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-11-03 01:58:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-03 01:58:24,098 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 15 [2022-11-03 01:58:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:24,098 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-03 01:58:24,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-03 01:58:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:58:24,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:24,099 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:24,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:24,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 01:58:24,302 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1236512951, now seen corresponding path program 3 times [2022-11-03 01:58:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:24,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784714436] [2022-11-03 01:58:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:24,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:24,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156919812] [2022-11-03 01:58:24,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:58:24,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:24,339 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:24,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 01:58:24,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:58:24,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:58:24,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 01:58:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:24,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:58:24,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:24,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:24,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:24,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 01:58:24,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 149 treesize of output 137 [2022-11-03 01:58:24,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 212 [2022-11-03 01:58:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:24,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 103 [2022-11-03 01:58:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:25,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-03 01:58:25,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 29 [2022-11-03 01:58:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:25,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:25,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 01:58:25,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 28 [2022-11-03 01:58:26,364 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse6 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse8 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse1 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ (* 8 (mod .cse6 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (and (forall ((v_ArrVal_590 Int) (v_ArrVal_586 (Array Int Int))) (= (select (store (store v_ArrVal_586 .cse1 (+ 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_586) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2) (select v_ArrVal_586 .cse3))) .cse4 v_ArrVal_590) .cse5) 4)) (not (= .cse6 0)))) (or (not .cse0) (forall ((v_ArrVal_590 Int)) (= 4 (select (store (let ((.cse7 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 1))) (store .cse7 .cse1 (+ 2 (select .cse7 .cse3) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2)))) .cse4 v_ArrVal_590) .cse5))))))) is different from false [2022-11-03 01:58:26,797 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:26,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 36 [2022-11-03 01:58:27,139 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:27,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2022-11-03 01:58:27,162 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:27,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:58:27,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:27,211 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:27,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 50 [2022-11-03 01:58:27,220 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:27,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2022-11-03 01:58:27,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 62 treesize of output 56 [2022-11-03 01:58:27,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2022-11-03 01:58:27,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 39 [2022-11-03 01:58:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-03 01:58:27,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784714436] [2022-11-03 01:58:27,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156919812] [2022-11-03 01:58:27,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156919812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609272319] [2022-11-03 01:58:27,296 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:58:27,296 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:27,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:27,296 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:27,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:27,418 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:27,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:27,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 01:58:27,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:27,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:27,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:27,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:27,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:27,634 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:27,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:27,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 137 [2022-11-03 01:58:27,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:27,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 66 [2022-11-03 01:58:27,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:27,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:27,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:27,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:27,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:27,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:27,996 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:58:27,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 197 [2022-11-03 01:58:28,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 91 [2022-11-03 01:58:28,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:28,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 64 [2022-11-03 01:58:28,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:28,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:28,087 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:28,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:28,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:28,235 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:28,672 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2015#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:28,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:28,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:28,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-03 01:58:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256531607] [2022-11-03 01:58:28,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 01:58:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 01:58:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=609, Unknown=1, NotChecked=50, Total=756 [2022-11-03 01:58:28,674 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:29,059 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-11-03 01:58:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 01:58:29,060 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:58:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:29,060 INFO L225 Difference]: With dead ends: 50 [2022-11-03 01:58:29,060 INFO L226 Difference]: Without dead ends: 48 [2022-11-03 01:58:29,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=133, Invalid=800, Unknown=1, NotChecked=58, Total=992 [2022-11-03 01:58:29,062 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:29,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-11-03 01:58:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-03 01:58:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-11-03 01:58:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2022-11-03 01:58:29,079 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 16 [2022-11-03 01:58:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:29,079 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2022-11-03 01:58:29,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2022-11-03 01:58:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:58:29,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:29,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:29,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:29,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 01:58:29,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:29,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:29,283 INFO L85 PathProgramCache]: Analyzing trace with hash -774659120, now seen corresponding path program 4 times [2022-11-03 01:58:29,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003125686] [2022-11-03 01:58:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:29,333 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:29,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451361314] [2022-11-03 01:58:29,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 01:58:29,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:29,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:29,336 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:29,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 01:58:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:30,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-03 01:58:30,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:30,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:58:30,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:30,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:30,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 01:58:30,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 01:58:30,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-03 01:58:30,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 89 treesize of output 81 [2022-11-03 01:58:30,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 135 [2022-11-03 01:58:30,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:30,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-03 01:58:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:30,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:31,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 01:58:31,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 28 [2022-11-03 01:58:31,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 82 treesize of output 78 [2022-11-03 01:58:32,714 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse7 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (.cse9 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse1 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod .cse7 4294967296) 8))) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse0 (and (forall ((v_ArrVal_687 Int) (v_ArrVal_690 Int) (v_ArrVal_683 (Array Int Int))) (= (select (store (store (store v_ArrVal_683 .cse1 (+ 2 (select v_ArrVal_683 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_683) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3))) .cse4 v_ArrVal_687) .cse5 v_ArrVal_690) .cse6) 4)) (not (= .cse7 0)))) (or (forall ((v_ArrVal_687 Int) (v_ArrVal_690 Int)) (= (select (store (store (let ((.cse8 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 1))) (store .cse8 .cse1 (+ 2 (select .cse8 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) .cse4 v_ArrVal_687) .cse5 v_ArrVal_690) .cse6) 4)) (not .cse0))))) is different from false [2022-11-03 01:58:33,109 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:33,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 36 [2022-11-03 01:58:33,645 INFO L356 Elim1Store]: treesize reduction 47, result has 38.2 percent of original size [2022-11-03 01:58:33,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 50 [2022-11-03 01:58:34,258 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:34,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2022-11-03 01:58:34,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:34,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:58:34,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2771 treesize of output 2746 [2022-11-03 01:58:34,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-03 01:58:34,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2106 treesize of output 2090 [2022-11-03 01:58:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-03 01:58:35,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:35,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003125686] [2022-11-03 01:58:35,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:35,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451361314] [2022-11-03 01:58:35,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451361314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031777504] [2022-11-03 01:58:35,534 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:58:35,534 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:35,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:35,535 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:35,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:35,639 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:35,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:35,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 01:58:35,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:35,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:35,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:35,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:35,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:35,806 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:35,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:35,922 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:58:35,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 460 treesize of output 441 [2022-11-03 01:58:35,943 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:35,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 95 [2022-11-03 01:58:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:36,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:36,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:36,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:36,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:36,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:36,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:36,166 INFO L356 Elim1Store]: treesize reduction 345, result has 8.0 percent of original size [2022-11-03 01:58:36,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 200 [2022-11-03 01:58:36,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-11-03 01:58:36,218 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:58:36,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-03 01:58:36,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:36,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:36,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:36,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:36,268 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:36,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:36,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:36,971 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2312#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:36,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:36,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:36,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-11-03 01:58:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435021511] [2022-11-03 01:58:36,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:36,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 01:58:36,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 01:58:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=868, Unknown=1, NotChecked=60, Total=1056 [2022-11-03 01:58:36,973 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:37,294 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse7 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (.cse9 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse1 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod .cse7 4294967296) 8))) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or .cse0 (and (forall ((v_ArrVal_687 Int) (v_ArrVal_690 Int) (v_ArrVal_683 (Array Int Int))) (= (select (store (store (store v_ArrVal_683 .cse1 (+ 2 (select v_ArrVal_683 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_683) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3))) .cse4 v_ArrVal_687) .cse5 v_ArrVal_690) .cse6) 4)) (not (= .cse7 0)))) (or (forall ((v_ArrVal_687 Int) (v_ArrVal_690 Int)) (= (select (store (store (let ((.cse8 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| 1))) (store .cse8 .cse1 (+ 2 (select .cse8 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) .cse4 v_ArrVal_687) .cse5 v_ArrVal_690) .cse6) 4)) (not .cse0)) (or .cse0 (and (= |c_ULTIMATE.start_main_~a~0#1.offset| |c_ULTIMATE.start_main_~b~0#1.offset|) (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)))))) is different from false [2022-11-03 01:58:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:37,487 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2022-11-03 01:58:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 01:58:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 01:58:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:37,488 INFO L225 Difference]: With dead ends: 71 [2022-11-03 01:58:37,488 INFO L226 Difference]: Without dead ends: 69 [2022-11-03 01:58:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=156, Invalid=1040, Unknown=2, NotChecked=134, Total=1332 [2022-11-03 01:58:37,490 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-11-03 01:58:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-03 01:58:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2022-11-03 01:58:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-11-03 01:58:37,519 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 18 [2022-11-03 01:58:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-03 01:58:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-11-03 01:58:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:58:37,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:37,521 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:37,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:37,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:37,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1425021295, now seen corresponding path program 8 times [2022-11-03 01:58:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:37,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116057869] [2022-11-03 01:58:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:37,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:37,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589633498] [2022-11-03 01:58:37,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:58:37,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:37,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:37,760 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:37,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 01:58:39,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 01:58:39,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:58:39,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:58:39,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:39,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:40,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116057869] [2022-11-03 01:58:40,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:58:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589633498] [2022-11-03 01:58:40,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589633498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:58:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643849458] [2022-11-03 01:58:40,102 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 01:58:40,103 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:58:40,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:58:40,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:58:40,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:58:40,222 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 01:58:40,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 01:58:40,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 01:58:40,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 01:58:40,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:40,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,430 INFO L356 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-03 01:58:40,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 412 treesize of output 452 [2022-11-03 01:58:40,553 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-03 01:58:40,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 403 treesize of output 386 [2022-11-03 01:58:40,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:40,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 36 [2022-11-03 01:58:40,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-03 01:58:40,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:40,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:40,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:40,723 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:40,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:40,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:40,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:40,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:40,771 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:58:40,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-03 01:58:40,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:40,793 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:41,143 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2667#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 01:58:41,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:58:41,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:58:41,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2022-11-03 01:58:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351165135] [2022-11-03 01:58:41,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:41,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 01:58:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:41,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 01:58:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2022-11-03 01:58:41,146 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:42,002 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2022-11-03 01:58:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 01:58:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 01:58:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:42,005 INFO L225 Difference]: With dead ends: 188 [2022-11-03 01:58:42,005 INFO L226 Difference]: Without dead ends: 168 [2022-11-03 01:58:42,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=524, Invalid=1926, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 01:58:42,007 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 348 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:42,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 94 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:58:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-03 01:58:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 76. [2022-11-03 01:58:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2022-11-03 01:58:42,041 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 18 [2022-11-03 01:58:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:42,041 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2022-11-03 01:58:42,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2022-11-03 01:58:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 01:58:42,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:42,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:42,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:42,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 01:58:42,252 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:42,252 INFO L85 PathProgramCache]: Analyzing trace with hash -972050403, now seen corresponding path program 5 times [2022-11-03 01:58:42,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:42,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690481684] [2022-11-03 01:58:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:42,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:42,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:58:42,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147792779] [2022-11-03 01:58:42,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:58:42,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:42,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:42,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26c6c6e-973b-4869-a79a-5bdb15e37e3d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 01:58:42,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 01:58:42,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:58:42,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 01:58:42,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:42,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:58:43,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:58:43,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 107 [2022-11-03 01:58:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:43,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 188 [2022-11-03 01:58:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-11-03 01:58:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 01:58:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2022-11-03 01:58:43,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 193 [2022-11-03 01:58:43,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,461 INFO L356 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2022-11-03 01:58:43,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 229 [2022-11-03 01:58:43,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 42 [2022-11-03 01:58:43,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 591 treesize of output 526 [2022-11-03 01:58:43,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:43,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 27 [2022-11-03 01:58:48,566 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 01:58:48,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 192 [2022-11-03 01:58:48,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:48,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:48,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:48,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:58:48,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:48,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 40 [2022-11-03 01:58:48,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:58:48,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-11-03 01:58:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:48,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:51,116 WARN L833 $PredicateComparison]: unable to prove that (or (not (< 2 c_~N~0)) (let ((.cse29 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse27 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse28 (* .cse29 8)) (.cse1 (<= .cse29 2147483647))) (let ((.cse10 (not .cse1)) (.cse17 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse19 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse18 (* 8 .cse27)) (.cse0 (<= .cse27 2147483647))) (and (or .cse0 (let ((.cse2 (+ (select .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse18)) (select .cse19 (+ (- 34359738368) .cse18 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse3 (let ((.cse6 (store .cse8 .cse9 v_ArrVal_866))) (store .cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse7 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2 (select .cse6 (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 .cse2)) (= (select .cse3 .cse4) 9) (not (= (select .cse3 .cse5) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)))))) (or .cse10 (let ((.cse13 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (forall ((v_ArrVal_864 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_340| Int)) (let ((.cse11 (store v_ArrVal_864 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse12 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ 2 (select v_ArrVal_864 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_864) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (= (select .cse11 .cse5) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (= (select .cse11 .cse4) 9)))) (not .cse13)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse14 (let ((.cse15 (store .cse8 .cse17 v_ArrVal_866))) (store .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse16 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ 2 (select .cse15 (+ .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (not (= (select .cse14 .cse5) 4)) (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 .cse2)) (= 9 (select .cse14 .cse4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0))))) .cse13))))))) (or (let ((.cse21 (+ 2 (select .cse19 (+ .cse18 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse18))))) (and (or .cse10 (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse20 (let ((.cse22 (store .cse8 .cse17 v_ArrVal_866))) (store .cse22 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse23 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ 2 (select .cse22 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (not (= (select .cse20 .cse5) 4)) (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (= 9 (select .cse20 .cse4)) (not (<= v_ArrVal_866 .cse21)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse24 (let ((.cse25 (store .cse8 .cse9 v_ArrVal_866))) (store .cse25 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse26 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2 (select .cse25 (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (= (select .cse24 .cse4) 9) (not (= (select .cse24 .cse5) 4)) (not (<= v_ArrVal_866 .cse21)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0))))) .cse1))) (not .cse0))))))) is different from false [2022-11-03 01:58:53,055 WARN L833 $PredicateComparison]: unable to prove that (or (not (< 2 c_~N~0)) (let ((.cse18 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse30 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse31 (mod .cse18 4294967296))) (let ((.cse29 (* .cse31 8)) (.cse19 (* .cse30 8))) (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse22 (+ .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (+ .cse19 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (let ((.cse1 (<= .cse31 2147483647))) (let ((.cse20 (<= .cse30 2147483647)) (.cse9 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse10 (not .cse1))) (and (or (let ((.cse2 (+ .cse19 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int) (v_ArrVal_863 (Array Int Int))) (let ((.cse4 (let ((.cse7 (store v_ArrVal_863 .cse9 v_ArrVal_866))) (store .cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse8 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse7 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_863) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2) 2 (select v_ArrVal_863 .cse3)))) (not (= (select .cse4 .cse5) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (= 9 (select .cse4 .cse6)))))) (or .cse10 (let ((.cse13 (= .cse18 0))) (and (or (forall ((v_ArrVal_864 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_340| Int)) (let ((.cse11 (store v_ArrVal_864 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse12 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ 2 (select v_ArrVal_864 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_864) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (= (select .cse11 .cse5) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (= (select .cse11 .cse6) 9)))) (not .cse13)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int) (v_ArrVal_863 (Array Int Int))) (let ((.cse14 (let ((.cse15 (store v_ArrVal_863 .cse17 v_ArrVal_866))) (store .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse16 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse15 (+ .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_863) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2) 2 (select v_ArrVal_863 .cse3)))) (= 9 (select .cse14 .cse6)) (not (= (select .cse14 .cse5) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0))))) .cse13)))))) .cse20) (or (not .cse20) (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int) (v_ArrVal_863 (Array Int Int))) (let ((.cse21 (let ((.cse24 (store v_ArrVal_863 .cse9 v_ArrVal_866))) (store .cse24 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse25 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse24 (+ .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (= (select .cse21 .cse5) 4)) (not (<= v_ArrVal_866 (+ (select v_ArrVal_863 .cse22) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_863) |c_ULTIMATE.start_main_~b~0#1.base|) .cse23)))) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (= 9 (select .cse21 .cse6)))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int) (v_ArrVal_863 (Array Int Int))) (let ((.cse26 (let ((.cse27 (store v_ArrVal_863 .cse17 v_ArrVal_866))) (store .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse28 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse27 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse28 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (= 9 (select .cse26 .cse6)) (not (<= v_ArrVal_866 (+ (select v_ArrVal_863 .cse22) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_863) |c_ULTIMATE.start_main_~b~0#1.base|) .cse23)))) (not (= (select .cse26 .cse5) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0))))) .cse10))))))) (or (not .cse0) (forall ((v_ArrVal_862 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse33 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse32 (let ((.cse34 (store .cse33 .cse17 v_ArrVal_866))) (store .cse34 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse35 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse34) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse35 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2 (select .cse34 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (or (= (select .cse32 .cse6) 9) (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 (+ (select .cse33 .cse22) 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|) .cse23)))) (not (= 4 (select .cse32 .cse5))) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (not (<= v_ArrVal_862 1))))))))))))) is different from false [2022-11-03 01:59:09,188 WARN L234 SmtUtils]: Spent 8.81s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:59:21,835 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse52 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (or (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0) (not (< 2 c_~N~0)) (let ((.cse50 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse51 (mod .cse52 4294967296))) (let ((.cse47 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse2 (<= .cse51 2147483647)) (.cse49 (* .cse51 8)) (.cse1 (<= .cse50 2147483647)) (.cse48 (* .cse50 8))) (let ((.cse20 (+ .cse48 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse22 (not .cse1)) (.cse11 (+ .cse49 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse18 (+ .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (not .cse2)) (.cse28 (+ .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse19 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse29 (* 8 .cse47)) (.cse0 (<= .cse47 2147483647))) (and (or .cse0 (let ((.cse21 (+ (select .cse19 (+ (- 34359738368) .cse29 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or .cse1 (let ((.cse10 (store .cse19 .cse20 .cse21))) (and (or .cse2 (forall ((v_ArrVal_862 Int) (v_ArrVal_860 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse10 .cse11 v_ArrVal_860)))) (let ((.cse4 (store (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse5 (let ((.cse8 (store .cse4 .cse7 v_ArrVal_866))) (store .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse9 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse8 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (not (<= v_ArrVal_866 (+ v_ArrVal_862 2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (= 9 (select .cse5 .cse6)) (not (= (select .cse5 .cse7) 4)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (not (<= v_ArrVal_862 1)))))))) (or .cse12 (forall ((v_ArrVal_862 Int) (v_ArrVal_860 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse10 .cse18 v_ArrVal_860)))) (let ((.cse14 (store (select .cse13 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse15 (let ((.cse16 (store .cse14 .cse7 v_ArrVal_866))) (store .cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse17 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse16 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store .cse13 |c_ULTIMATE.start_main_~a~0#1.base| .cse16) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 (+ v_ArrVal_862 2 (select (select (store .cse13 |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (= (select .cse15 .cse7) 4)) (= (select .cse15 .cse6) 9) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (not (<= v_ArrVal_862 1))))))))))) (or .cse22 (forall ((v_ArrVal_862 Int) (v_ArrVal_860 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse19 .cse28 .cse21) .cse18 v_ArrVal_860)))) (let ((.cse25 (store (select .cse24 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse23 (let ((.cse26 (store .cse25 .cse7 v_ArrVal_866))) (store .cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse27 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select .cse26 (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2 (select (select (store .cse24 |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (= (select .cse23 .cse6) 9) (not (= 4 (select .cse23 .cse7))) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (not (<= v_ArrVal_866 (+ v_ArrVal_862 2 (select (select (store .cse24 |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_862 1))))))))))) (or (let ((.cse35 (+ 2 (select .cse19 (+ .cse29 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((v_ArrVal_862 Int) (v_ArrVal_860 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse19 .cse20 .cse35) .cse11 v_ArrVal_860)))) (let ((.cse32 (store (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse30 (let ((.cse33 (store .cse32 .cse7 v_ArrVal_866))) (store .cse33 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse34 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ 2 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse33 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (or (not (= (select .cse30 .cse7) 4)) (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 (+ v_ArrVal_862 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 2))) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (= (select .cse30 .cse6) 9) (not (<= v_ArrVal_862 1))))))) .cse1) (or .cse22 (let ((.cse41 (store .cse19 .cse28 .cse35))) (and (or .cse2 (forall ((v_ArrVal_862 Int) (v_ArrVal_860 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse41 .cse11 v_ArrVal_860)))) (let ((.cse38 (store (select .cse37 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse36 (let ((.cse39 (store .cse38 .cse7 v_ArrVal_866))) (store .cse39 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse40 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select (select (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse40 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse39 (+ .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (= 4 (select .cse36 .cse7))) (not (<= v_ArrVal_866 (+ v_ArrVal_862 2 (select (select (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (= 9 (select .cse36 .cse6)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (not (<= v_ArrVal_862 1)))))))) (or (forall ((v_ArrVal_862 Int) (v_ArrVal_860 Int) (|v_ULTIMATE.start_main_~i~0#1_340| Int) (v_ArrVal_866 Int)) (let ((.cse42 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse41 .cse18 v_ArrVal_860)))) (let ((.cse43 (store (select .cse42 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_862))) (let ((.cse44 (let ((.cse45 (store .cse43 .cse7 v_ArrVal_866))) (store .cse45 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_340| 4294967296) 8)) (let ((.cse46 (* 8 (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_340|) 4294967296)))) (+ (select (select (store .cse42 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse45 (+ .cse46 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)))))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_340| 1) c_~N~0) (not (<= v_ArrVal_866 (+ v_ArrVal_862 (select (select (store .cse42 |c_ULTIMATE.start_main_~a~0#1.base| .cse43) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 2))) (= 9 (select .cse44 .cse6)) (not (< |v_ULTIMATE.start_main_~i~0#1_340| c_~N~0)) (not (= (select .cse44 .cse7) 4)) (not (<= v_ArrVal_862 1))))))) .cse12)))))) (not .cse0)))))) (not (< .cse52 c_~N~0)))) is different from true [2022-11-03 01:59:21,975 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:21,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2022-11-03 01:59:21,998 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:22,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 01:59:26,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:26,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:26,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:27,268 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:27,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 549 treesize of output 244 [2022-11-03 01:59:27,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:27,739 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:27,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 539 treesize of output 243 [2022-11-03 01:59:27,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:28,080 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:28,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 529 treesize of output 242 [2022-11-03 01:59:28,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:28,788 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:28,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 529 treesize of output 242 [2022-11-03 01:59:29,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:29,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:29,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:29,621 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:29,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 241 [2022-11-03 01:59:30,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:30,506 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:30,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 539 treesize of output 243 [2022-11-03 02:00:38,315 WARN L234 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 43 DAG size of output: 40 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:00:38,316 INFO L356 Elim1Store]: treesize reduction 42, result has 58.0 percent of original size [2022-11-03 02:00:38,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 88343 treesize of output 48198 [2022-11-03 02:00:38,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:03:18,124 WARN L234 SmtUtils]: Spent 2.66m on a formula simplification that was a NOOP. DAG size: 86 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:03:18,124 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:03:18,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 51111 treesize of output 50764 [2022-11-03 02:03:18,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:05:46,530 WARN L234 SmtUtils]: Spent 2.47m on a formula simplification that was a NOOP. DAG size: 86 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:05:46,530 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:05:46,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 52052 treesize of output 51965 [2022-11-03 02:08:00,742 WARN L234 SmtUtils]: Spent 2.23m on a formula simplification that was a NOOP. DAG size: 82 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:08:00,742 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:08:00,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 55610 treesize of output 55153 [2022-11-03 02:08:01,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:08:01,286 INFO L244 Elim1Store]: Index analysis took 141 ms [2022-11-03 02:09:41,199 WARN L234 SmtUtils]: Spent 1.67m on a formula simplification that was a NOOP. DAG size: 74 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:09:41,200 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:09:41,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 56210 treesize of output 56059 [2022-11-03 02:09:41,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:11:29,546 WARN L234 SmtUtils]: Spent 1.79m on a formula simplification that was a NOOP. DAG size: 74 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:11:29,547 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:11:29,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57763 treesize of output 57564 [2022-11-03 02:11:30,310 INFO L244 Elim1Store]: Index analysis took 255 ms