./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/avg10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/avg10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh --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 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:54:06,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:54:06,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:54:06,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:54:06,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:54:06,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:54:06,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:54:06,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:54:06,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:54:06,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:54:06,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:54:06,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:54:06,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:54:06,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:54:06,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:54:06,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:54:06,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:54:06,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:54:06,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:54:06,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:54:06,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:54:06,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:54:06,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:54:06,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:54:06,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:54:06,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:54:06,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:54:06,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:54:06,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:54:06,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:54:06,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:54:06,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:54:06,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:54:06,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:54:06,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:54:06,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:54:06,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:54:06,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:54:06,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:54:06,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:54:06,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:54:06,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:54:06,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:54:06,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:54:06,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:54:06,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:54:06,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:54:06,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:54:06,774 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:54:06,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:54:06,775 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:54:06,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:54:06,775 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:54:06,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:54:06,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:54:06,776 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:54:06,776 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:54:06,776 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:54:06,776 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:54:06,777 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:54:06,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:54:06,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:54:06,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:54:06,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:54:06,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:54:06,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:54:06,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:54:06,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:54:06,779 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:54:06,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:54:06,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:54:06,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:54:06,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:54:06,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:54:06,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:54:06,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:54:06,780 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:54:06,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:54:06,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:54:06,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:54:06,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:54:06,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:54:06,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:54:06,782 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_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 [2022-12-14 10:54:06,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:54:07,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:54:07,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:54:07,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:54:07,004 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:54:07,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/reducercommutativity/avg10-2.i [2022-12-14 10:54:09,501 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:54:09,651 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:54:09,651 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/sv-benchmarks/c/reducercommutativity/avg10-2.i [2022-12-14 10:54:09,656 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/data/70e8a9ac2/1def260be3634a64bb6c68dd7702ec0b/FLAG49e4601bf [2022-12-14 10:54:10,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/data/70e8a9ac2/1def260be3634a64bb6c68dd7702ec0b [2022-12-14 10:54:10,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:54:10,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:54:10,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:54:10,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:54:10,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:54:10,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4991b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10, skipping insertion in model container [2022-12-14 10:54:10,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:54:10,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:54:10,197 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/sv-benchmarks/c/reducercommutativity/avg10-2.i[1282,1295] [2022-12-14 10:54:10,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:54:10,207 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:54:10,224 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/sv-benchmarks/c/reducercommutativity/avg10-2.i[1282,1295] [2022-12-14 10:54:10,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:54:10,236 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:54:10,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10 WrapperNode [2022-12-14 10:54:10,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:54:10,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:54:10,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:54:10,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:54:10,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,261 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-12-14 10:54:10,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:54:10,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:54:10,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:54:10,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:54:10,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:54:10,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:54:10,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:54:10,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:54:10,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (1/1) ... [2022-12-14 10:54:10,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:54:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:10,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:54:10,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:54:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:54:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:54:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:54:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:54:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-12-14 10:54:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-12-14 10:54:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:54:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:54:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:54:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:54:10,406 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:54:10,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:54:10,532 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:54:10,574 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:54:10,574 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 10:54:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:54:10 BoogieIcfgContainer [2022-12-14 10:54:10,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:54:10,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:54:10,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:54:10,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:54:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:54:10" (1/3) ... [2022-12-14 10:54:10,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f241c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:54:10, skipping insertion in model container [2022-12-14 10:54:10,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:54:10" (2/3) ... [2022-12-14 10:54:10,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f241c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:54:10, skipping insertion in model container [2022-12-14 10:54:10,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:54:10" (3/3) ... [2022-12-14 10:54:10,586 INFO L112 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2022-12-14 10:54:10,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:54:10,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:54:10,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:54:10,653 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;@647ae4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:54:10,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:54:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:54:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:54:10,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:10,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:10,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1847977284, now seen corresponding path program 1 times [2022-12-14 10:54:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:10,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46763828] [2022-12-14 10:54:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:10,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:54:10,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:10,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46763828] [2022-12-14 10:54:10,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46763828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:10,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:54:10,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:54:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049994054] [2022-12-14 10:54:10,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:54:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:54:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:10,949 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:54:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:10,985 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-12-14 10:54:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:54:10,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-12-14 10:54:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:10,992 INFO L225 Difference]: With dead ends: 33 [2022-12-14 10:54:10,992 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 10:54:10,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:54:10,997 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:10,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:54:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 10:54:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 10:54:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:54:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 10:54:11,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-12-14 10:54:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:11,025 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 10:54:11,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:54:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 10:54:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 10:54:11,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:11,027 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:11,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:54:11,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1923649121, now seen corresponding path program 1 times [2022-12-14 10:54:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:11,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889567861] [2022-12-14 10:54:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:54:11,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:11,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889567861] [2022-12-14 10:54:11,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889567861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:54:11,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153528026] [2022-12-14 10:54:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:11,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:11,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:11,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:54:11,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:54:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:11,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:54:11,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:54:11,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:54:11,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153528026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:11,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:54:11,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 10:54:11,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306012264] [2022-12-14 10:54:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:11,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:54:11,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:54:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:54:11,222 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:54:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:11,239 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-12-14 10:54:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:54:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-14 10:54:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:11,240 INFO L225 Difference]: With dead ends: 29 [2022-12-14 10:54:11,241 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 10:54:11,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:54:11,242 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:11,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:54:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 10:54:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 10:54:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:54:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-14 10:54:11,245 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-12-14 10:54:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:11,246 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-14 10:54:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:54:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-12-14 10:54:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:54:11,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:11,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:11,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:54:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:11,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -55252021, now seen corresponding path program 1 times [2022-12-14 10:54:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:11,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543947386] [2022-12-14 10:54:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:54:11,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:11,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543947386] [2022-12-14 10:54:11,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543947386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:54:11,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280358139] [2022-12-14 10:54:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:11,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:11,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:11,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:54:11,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:54:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:11,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:54:11,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:54:11,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:54:11,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280358139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:54:11,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:54:11,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 10:54:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091838332] [2022-12-14 10:54:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:54:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:54:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:54:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:54:11,705 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:54:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:11,720 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-12-14 10:54:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:54:11,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-12-14 10:54:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:11,721 INFO L225 Difference]: With dead ends: 27 [2022-12-14 10:54:11,721 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 10:54:11,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:54:11,722 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:54:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 10:54:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 10:54:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:54:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-14 10:54:11,725 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-12-14 10:54:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:11,726 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-14 10:54:11,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:54:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-14 10:54:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 10:54:11,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:11,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:11,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:54:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 10:54:11,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1031743116, now seen corresponding path program 1 times [2022-12-14 10:54:11,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:11,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505427763] [2022-12-14 10:54:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:54:12,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:12,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505427763] [2022-12-14 10:54:12,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505427763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:54:12,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246919357] [2022-12-14 10:54:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:12,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:12,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:12,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:54:12,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:54:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:12,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:54:12,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:54:12,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:54:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:54:12,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246919357] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:54:12,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1653346336] [2022-12-14 10:54:12,233 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:54:12,233 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:54:12,237 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:54:12,242 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:54:12,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:54:12,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,329 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:54:12,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 10:54:12,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,356 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:54:12,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:54:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,380 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-12-14 10:54:12,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:54:12,469 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 10:54:12,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-12-14 10:54:12,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:54:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 10:54:12,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 10:54:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:12,816 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 10:54:12,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-12-14 10:54:12,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 10:54:12,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:54:13,016 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 10:54:13,045 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:54:57,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_5 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_5 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_5 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_5 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_5 10)) 4294967296) 2147483647) (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_5 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_5 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_5 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_5 10)) 4294967296) (+ (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_5 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_5 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_5 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_5 10)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:54:57,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:54:57,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:54:57,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-12-14 10:54:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124846083] [2022-12-14 10:54:57,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:54:57,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:54:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:54:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:54:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-12-14 10:54:57,882 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 10:54:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:54:57,905 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-12-14 10:54:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:54:57,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-12-14 10:54:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:54:57,906 INFO L225 Difference]: With dead ends: 36 [2022-12-14 10:54:57,906 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 10:54:57,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-12-14 10:54:57,907 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:54:57,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:54:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 10:54:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 10:54:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:54:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-12-14 10:54:57,912 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-12-14 10:54:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:54:57,912 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-12-14 10:54:57,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 10:54:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-14 10:54:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 10:54:57,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:54:57,913 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:54:57,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:54:58,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:58,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:54:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:54:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1851567783, now seen corresponding path program 2 times [2022-12-14 10:54:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:54:58,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628272334] [2022-12-14 10:54:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:54:58,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:54:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:54:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:54:58,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:54:58,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628272334] [2022-12-14 10:54:58,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628272334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:54:58,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119756538] [2022-12-14 10:54:58,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:54:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:54:58,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:54:58,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:54:58,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:54:58,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 10:54:58,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:54:58,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:54:58,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:54:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:54:58,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:54:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 10:54:58,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119756538] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:54:58,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2101640375] [2022-12-14 10:54:58,288 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:54:58,288 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:54:58,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:54:58,289 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:54:58,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:54:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,314 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:54:58,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:54:58,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-12-14 10:54:58,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,343 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-12-14 10:54:58,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,388 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 10:54:58,389 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 196 treesize of output 184 [2022-12-14 10:54:58,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:54:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 10:54:58,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:54:58,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 10:54:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:58,571 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 10:54:58,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 10:54:58,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 10:54:58,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:54:58,693 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 10:54:58,722 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:43,574 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_12 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_12 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_12 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_12 10)) 4294967296) 2147483647) (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_12 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_12 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_12 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_12 10)) 4294967296) (+ (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_12 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_12 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_12 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_12 10)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:43,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:43,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:55:43,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 10:55:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563485684] [2022-12-14 10:55:43,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:55:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:55:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-12-14 10:55:43,576 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 10:55:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:43,598 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-12-14 10:55:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:55:43,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2022-12-14 10:55:43,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:43,599 INFO L225 Difference]: With dead ends: 38 [2022-12-14 10:55:43,599 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 10:55:43,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2022-12-14 10:55:43,600 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:43,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:55:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 10:55:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 10:55:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:55:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-14 10:55:43,604 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-12-14 10:55:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:43,604 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-14 10:55:43,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 10:55:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 10:55:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 10:55:43,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:43,605 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:43,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:55:43,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:43,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash -467410099, now seen corresponding path program 3 times [2022-12-14 10:55:43,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:43,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231145] [2022-12-14 10:55:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:43,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 10:55:43,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:43,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231145] [2022-12-14 10:55:43,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:55:43,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968672485] [2022-12-14 10:55:43,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:55:43,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:43,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:43,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:55:43,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:55:43,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:43,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:55:43,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 10:55:44,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 10:55:44,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968672485] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:44,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [645186290] [2022-12-14 10:55:44,063 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:44,063 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:44,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:44,064 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:44,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,087 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:55:44,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:55:44,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-12-14 10:55:44,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,111 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-12-14 10:55:44,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,149 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 10:55:44,149 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 196 treesize of output 184 [2022-12-14 10:55:44,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:55:44,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 10:55:44,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:44,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 10:55:44,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,320 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 10:55:44,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 10:55:44,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 10:55:44,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:55:44,426 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 10:55:44,447 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:56:29,389 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_17 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_17 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_17 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_17 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_17 10)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_17 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_17 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_17 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_17 10)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_17 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_17 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_17 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_17 10)) 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:56:29,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:56:29,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:56:29,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-14 10:56:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532454950] [2022-12-14 10:56:29,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:56:29,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 10:56:29,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:56:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 10:56:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=559, Unknown=12, NotChecked=0, Total=702 [2022-12-14 10:56:29,392 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 10:56:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:56:29,423 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2022-12-14 10:56:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:56:29,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2022-12-14 10:56:29,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:56:29,424 INFO L225 Difference]: With dead ends: 48 [2022-12-14 10:56:29,424 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 10:56:29,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=131, Invalid=559, Unknown=12, NotChecked=0, Total=702 [2022-12-14 10:56:29,425 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:56:29,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:56:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 10:56:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 10:56:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:56:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-12-14 10:56:29,428 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-12-14 10:56:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:56:29,428 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-12-14 10:56:29,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 10:56:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-12-14 10:56:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 10:56:29,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:56:29,429 INFO L195 NwaCegarLoop]: trace histogram [30, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:56:29,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:56:29,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:56:29,630 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:56:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:56:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash -920140388, now seen corresponding path program 4 times [2022-12-14 10:56:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:56:29,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137201607] [2022-12-14 10:56:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:56:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 10:56:29,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:56:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137201607] [2022-12-14 10:56:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137201607] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:56:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324408885] [2022-12-14 10:56:29,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:56:29,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:56:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:56:29,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:56:29,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:56:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:29,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:56:29,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:56:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 10:56:29,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:56:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 10:56:29,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324408885] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:56:29,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [273848211] [2022-12-14 10:56:29,942 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:56:29,942 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:56:29,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:56:29,942 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:56:29,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:56:29,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:29,962 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:56:29,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 10:56:29,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:29,981 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:56:29,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:56:29,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:29,996 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-12-14 10:56:30,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:30,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:30,039 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 10:56:30,039 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 196 treesize of output 184 [2022-12-14 10:56:30,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:56:30,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:30,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 10:56:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:30,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:30,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 10:56:30,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:30,198 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 10:56:30,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 10:56:30,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 10:56:30,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:56:30,309 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 10:56:30,336 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:57:15,261 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1632#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (exists ((v_avg_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_24 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_24 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_24 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_24 10)) 4294967296) 2147483647) (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_24 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_24 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_24 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_24 10)) 4294967296) (+ (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_24 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_24 10) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_24 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_24 10)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 10:57:15,262 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:57:15,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:57:15,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-12-14 10:57:15,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034346275] [2022-12-14 10:57:15,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:57:15,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:57:15,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:57:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=500, Unknown=12, NotChecked=0, Total=650 [2022-12-14 10:57:15,264 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 10:57:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:15,295 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2022-12-14 10:57:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:57:15,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-12-14 10:57:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:15,296 INFO L225 Difference]: With dead ends: 62 [2022-12-14 10:57:15,296 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 10:57:15,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=138, Invalid=500, Unknown=12, NotChecked=0, Total=650 [2022-12-14 10:57:15,297 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:15,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:15,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 10:57:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-12-14 10:57:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:57:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-12-14 10:57:15,300 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2022-12-14 10:57:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:15,300 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-12-14 10:57:15,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 10:57:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-12-14 10:57:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 10:57:15,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:15,301 INFO L195 NwaCegarLoop]: trace histogram [30, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:15,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:57:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:15,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1946663804, now seen corresponding path program 5 times [2022-12-14 10:57:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:15,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250571128] [2022-12-14 10:57:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-12-14 10:57:15,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250571128] [2022-12-14 10:57:15,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250571128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:57:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586048294] [2022-12-14 10:57:15,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:57:15,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:15,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:15,620 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:15,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:57:15,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:57:15,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:57:15,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:57:15,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-14 10:57:15,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-12-14 10:57:15,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586048294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [233706309] [2022-12-14 10:57:15,732 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:57:15,732 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:57:15,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:57:15,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:57:15,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:57:15,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:15,751 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:57:15,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 10:57:15,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:15,769 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:57:15,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:57:15,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:15,781 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-12-14 10:57:15,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:15,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:57:15,832 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 10:57:15,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-12-14 10:57:15,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:57:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:15,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 10:57:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:15,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 10:57:15,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:16,015 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 10:57:16,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-12-14 10:57:16,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 10:57:16,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:57:16,136 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 10:57:16,165 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:57:59,196 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2195#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (exists ((v_avg_~ret~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_30 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_30 0)) (+ 1 (div v_avg_~ret~0_BEFORE_RETURN_30 10)) (div v_avg_~ret~0_BEFORE_RETURN_30 10)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_30 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_30 0)) (+ 1 (div v_avg_~ret~0_BEFORE_RETURN_30 10)) (div v_avg_~ret~0_BEFORE_RETURN_30 10)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_30 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_30 0)) (+ 1 (div v_avg_~ret~0_BEFORE_RETURN_30 10)) (div v_avg_~ret~0_BEFORE_RETURN_30 10)) 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 10:57:59,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:57:59,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:57:59,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-14 10:57:59,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756835878] [2022-12-14 10:57:59,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:57:59,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:57:59,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:57:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:57:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=355, Unknown=11, NotChecked=0, Total=462 [2022-12-14 10:57:59,198 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:57:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:57:59,216 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2022-12-14 10:57:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:57:59,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-12-14 10:57:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:57:59,217 INFO L225 Difference]: With dead ends: 59 [2022-12-14 10:57:59,217 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 10:57:59,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=96, Invalid=355, Unknown=11, NotChecked=0, Total=462 [2022-12-14 10:57:59,218 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:57:59,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:57:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 10:57:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 10:57:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:57:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-12-14 10:57:59,221 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 62 [2022-12-14 10:57:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:57:59,221 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-12-14 10:57:59,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:57:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-12-14 10:57:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 10:57:59,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:57:59,222 INFO L195 NwaCegarLoop]: trace histogram [30, 10, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:57:59,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:57:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 10:57:59,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:57:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:57:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash -934357060, now seen corresponding path program 6 times [2022-12-14 10:57:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:57:59,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363012784] [2022-12-14 10:57:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:57:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:57:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:57:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-12-14 10:57:59,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:57:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363012784] [2022-12-14 10:57:59,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363012784] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:57:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360361869] [2022-12-14 10:57:59,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:57:59,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:57:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:57:59,566 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:57:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:57:59,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:57:59,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:57:59,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:57:59,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:57:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-14 10:57:59,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:57:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-12-14 10:57:59,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360361869] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:57:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861167073] [2022-12-14 10:57:59,745 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:57:59,746 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:57:59,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:57:59,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:57:59,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:57:59,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,764 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:57:59,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 10:57:59,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-12-14 10:57:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,779 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-12-14 10:57:59,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:57:59,821 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 10:57:59,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-12-14 10:57:59,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 10:57:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 10:57:59,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:57:59,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 10:57:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:57:59,996 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 10:57:59,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 10:58:00,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 10:58:00,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:58:00,097 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 10:58:00,114 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:58:45,180 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2789#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_avg_~ret~0_BEFORE_RETURN_36 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_36 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_36 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_36 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_36 10)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_36 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_36 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_36 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_36 10)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_36 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_36 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_36 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_36 10)) 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:58:45,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:58:45,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:58:45,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-12-14 10:58:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634724278] [2022-12-14 10:58:45,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:58:45,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:58:45,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:58:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:58:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=462, Unknown=12, NotChecked=0, Total=600 [2022-12-14 10:58:45,182 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:58:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:58:45,204 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2022-12-14 10:58:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:58:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-12-14 10:58:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:58:45,205 INFO L225 Difference]: With dead ends: 62 [2022-12-14 10:58:45,205 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 10:58:45,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=126, Invalid=462, Unknown=12, NotChecked=0, Total=600 [2022-12-14 10:58:45,207 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:58:45,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:58:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 10:58:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-14 10:58:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:58:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-12-14 10:58:45,210 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 66 [2022-12-14 10:58:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:58:45,210 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-12-14 10:58:45,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:58:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-12-14 10:58:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:58:45,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:58:45,211 INFO L195 NwaCegarLoop]: trace histogram [30, 10, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:58:45,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:58:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:58:45,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:58:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:58:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1940026797, now seen corresponding path program 7 times [2022-12-14 10:58:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:58:45,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635091668] [2022-12-14 10:58:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:58:45,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:58:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 616 refuted. 3 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 11:00:56,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:00:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635091668] [2022-12-14 11:00:56,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635091668] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:00:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485210165] [2022-12-14 11:00:56,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:00:56,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:00:56,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:00:56,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:00:56,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d37e247-5345-4423-a523-8815f7f3df72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:00:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:56,952 WARN L261 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 301 conjunts are in the unsatisfiable core [2022-12-14 11:00:56,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:56,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:00:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-14 11:00:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:57,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-12-14 11:00:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:57,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2022-12-14 11:00:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:57,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:57,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2022-12-14 11:00:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:58,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 84 [2022-12-14 11:00:58,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:58,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 101 [2022-12-14 11:00:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:58,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2022-12-14 11:00:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:58,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:58,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 135 [2022-12-14 11:00:59,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:59,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 134 [2022-12-14 11:01:10,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:10,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:10,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1420 treesize of output 438 [2022-12-14 11:01:26,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:26,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:26,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:26,174 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-14 11:01:26,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 2329 treesize of output 672 [2022-12-14 11:01:29,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:29,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:29,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 2205 treesize of output 644 [2022-12-14 11:01:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:31,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:31,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 2147 treesize of output 644 [2022-12-14 11:01:37,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:37,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:37,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:37,466 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-14 11:01:37,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 2152 treesize of output 667 [2022-12-14 11:01:44,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:44,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:44,472 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-12-14 11:01:44,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 2158 treesize of output 673 [2022-12-14 11:01:47,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:47,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:47,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 2147 treesize of output 644 [2022-12-14 11:01:49,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:49,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:01:49,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:49,778 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-14 11:01:49,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 2152 treesize of output 667 [2022-12-14 11:01:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:52,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:52,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 2147 treesize of output 644 [2022-12-14 11:01:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:55,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:55,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 2147 treesize of output 644 [2022-12-14 11:01:59,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:59,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:01:59,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 2141 treesize of output 644 [2022-12-14 11:02:05,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:02:05,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 45 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 3570 treesize of output 1210 [2022-12-14 11:02:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 11:02:13,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:03:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 1 proven. 542 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 11:03:40,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485210165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:03:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [920720770] [2022-12-14 11:03:40,474 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 11:03:40,475 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:03:40,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:03:40,475 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:03:40,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:03:40,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,494 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:03:40,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:03:40,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-12-14 11:03:40,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,514 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-12-14 11:03:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:03:40,559 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 11:03:40,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2022-12-14 11:03:40,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 11:03:40,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 11:03:40,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 11:03:40,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:03:40,718 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 11:03:40,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-12-14 11:03:40,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 11:03:40,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:03:40,812 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2022-12-14 11:03:40,827 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:04:35,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3523#(and (<= 9 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_42 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_42 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_42 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_42 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_42 10)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_42 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_42 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_42 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_42 10)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_42 10) 0)) (< v_avg_~ret~0_BEFORE_RETURN_42 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_42 10) 1) (div v_avg_~ret~0_BEFORE_RETURN_42 10)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 10 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 36 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:04:35,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:04:35,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:04:35,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 41, 32] total 122 [2022-12-14 11:04:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075200755] [2022-12-14 11:04:35,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:04:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-12-14 11:04:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-12-14 11:04:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=17511, Unknown=37, NotChecked=0, Total=18090 [2022-12-14 11:04:35,158 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 122 states, 109 states have (on average 1.110091743119266) internal successors, (121), 112 states have internal predecessors, (121), 9 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 11:04:37,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:39,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:42,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:44,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:46,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:49,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:51,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:54,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:56,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:04:59,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 11:07:08,898 WARN L233 SmtUtils]: Spent 2.04m on a formula simplification. DAG size of input: 245 DAG size of output: 227 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:07:24,489 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 168 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)